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    "textoCompleto" => "<p class="elsevierStylePara"><span class="elsevierStyleBold">INTRODUCTION</span></p><p class="elsevierStylePara"><span class="elsevierStyleBold">&#160;</span></p><p class="elsevierStylePara">High levels of phosphorus are related to the development of arteriosclerosis and bone disease in patients with chronic kidney disease &#40;CKD&#41;<span class="elsevierStyleSup">1</span>&#46; Phosphorus intake is also a public health problem given its impact on cardiovascular risk in the general population &#40;&#8220;new cholesterol&#8221;&#41;<span class="elsevierStyleSup">2-4</span>&#46; The wide and growing use of these additives<span class="elsevierStyleSup">5</span>&#44; in relatively high quantities<span class="elsevierStyleSup">6</span>&#44; without clear regulations in the labelling<span class="elsevierStyleSup">7&#44;8</span> and usually without their inclusion in the food composition tables means that there is a high phosphorus contribution&#44; which we can consider to be &#8220;hidden phosphorus&#8221;<span class="elsevierStyleSup">9</span>&#46;</p><p class="elsevierStylePara">The dietary recommendations in CKD aim to obtain an adequate protein contribution with reduced phosphorus intake&#44; which is a difficult balance to achieve&#46; Additives provide phosphorus without protein&#44; which is something we should consider in the dietary education of our patients&#46; However&#44; it is difficult to know the real phosphorus contribution in the diet&#44; given the limited information on the product labels and the few and confusing data in the food composition tables<span class="elsevierStyleSup">10</span>&#46;</p><p class="elsevierStylePara">The main objective of this study was to provide information about the real phosphorus content determined by spectrophotometry in an extensive group of 118 natural products and with different degrees of processing&#46; As secondary objectives&#44; we aimed to indicate the differences and contradictions with respect to the different food composition tables and make nephrologists&#44; dieticians and nursing staff aware of this barrier in dietary education&#44; in order to facilitate practical training for our patients&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">&#160;</span></p><p class="elsevierStylePara"><span class="elsevierStyleBold">MATERIAL AND METHOD</span></p><p class="elsevierStylePara"><span class="elsevierStyleBold">&#160;</span></p><p class="elsevierStylePara">Study design&#58; descriptive cross-sectional study with analysis of food product components&#46;</p><p class="elsevierStylePara">We received financing of the Arag&#243;n Health Sciences Institute over two years to determine phosphorus and protein in 118 fresh products with different degrees of processing&#46;</p><p class="elsevierStylePara">In the first 52 products we analysed three different batches&#46; After verifying the reproducibility of the phosphorus measurements&#44; we acquired two batches of the following 66 products analysed and carried out a third test when the values were conflicting &#40;coefficient of variation &#91;CV&#93; &#91;standard deviation &#40;SD&#47;average value&#93; &#8805;10&#37;&#41;&#46;</p><p class="elsevierStylePara">The detailed methodology of the study is displayed in a previous publication<span class="elsevierStyleSup">10</span>&#46; Total phosphorus was determined using molecular absorption spectrophotometry and total protein content was determined by the Kjeldahl method&#46; These tests were carried out in the Arag&#243;n Food Technology and Research Centre&#46; The averages of the tests were considered to be phosphorus measured&#46; Protein content&#44; which was more standardised&#44; was only measured in the first batch of each product&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">&#160;</span></p><p class="elsevierStylePara"><span class="elsevierStyleBold">Expression of results</span></p><p class="elsevierStylePara"><span class="elsevierStyleBold">&#160;</span></p><p class="elsevierStylePara">Phosphorus content was expressed in mg&#47;100g of the product and the protein content was expressed in g&#47;100g of the product&#46; We added the calculation of the phosphorus &#91;mg&#93;-protein &#91;g&#93; ratio due to its relevance in our patients<span class="elsevierStyleSup">11</span>&#46; The Kidney Disease Outcomes Quality Initiative guidelines recommend a dietary ratio of 10-12mg&#47;g&#46;</p><p class="elsevierStylePara">We reviewed the information on phosphorus and protein content of the different food processed in the Moreiras food composition table<span class="elsevierStyleSup">12</span>&#44; that of the Nutrition and Diet Higher Education Centre<span class="elsevierStyleSup">13</span> and that of the BEDCA &#40;Spanish Food Composition Database&#41; of the Ministry of Science and Innovation&#44; Spanish Food Safety and Nutrition Agency<span class="elsevierStyleSup">14</span>&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">&#160;</span></p><p class="elsevierStylePara"><span class="elsevierStyleBold">Statistical analysis</span></p><p class="elsevierStylePara"><span class="elsevierStyleBold">&#160;</span></p><p class="elsevierStylePara">The description of quantitative variables was carried out with their mean &#177; SD and the qualitative variables with the distribution of frequencies&#46; We carried out a phosphorus content repeatability study in various foods&#44; with two or three repetitions for each sample&#46; We calculated the mean&#44; SD&#44; and the CV &#40;CV&#61;SD&#47;mean&#41; expressed as a &#37; and the repeatability interval &#40;r&#61;SDx2&#46;8&#41; for each set of repeated tests of the same sample&#46; Subsequently&#44; we calculated the means of all the previous tests in all the samples&#46; We considered CV values between phosphorus tests in the same sample &#60;10&#37; to be acceptable&#46; We considered <span class="elsevierStyleItalic">p</span> values &#60;&#46;05 to be statistically significant&#46; We analysed the data with the SPSS version 15&#46;0 software&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">&#160;</span></p><p class="elsevierStylePara"><span class="elsevierStyleBold">RESULTS</span></p><p class="elsevierStylePara"><span class="elsevierStyleBold">&#160;</span></p><p class="elsevierStylePara">The results obtained in our tests are shown in Tables 1&#44; 2 and 3&#46; For a comparison&#44; the data of the food composition tables are expressed in Table 4&#46;</p><p class="elsevierStylePara">Of the 118 products analysed&#44; 50 &#40;43&#46;2&#37;&#41; contained phosphorus additives&#44; according to the labels&#46; The mean phosphorus value in the total samples was 162&#46;1 &#40;range 21&#46;4-790&#46;3&#41; mg&#47;100g&#44; the mean SD was 9&#46;93mg&#47;100g&#44; the mean CV was 6&#46;7&#37; and the mean repeatability interval &#40;r&#41; was 29&#46;3mg&#47;100g &#40;this implies that 95&#37; of the time&#44; a new test&#44; repeated again&#44; did not differ by more than 29&#46;3mg&#47;dl from the mean of the previous tests&#41;&#46; In values below the median&#44; the mean of the phosphorus tests in the total sample was 120&#46;3 &#40;range 21&#46;4-160&#46;6&#41; mg&#47;100g&#44; the mean of the SD was 8&#46;7mg&#47;100g&#44; the mean of the CV was 7&#46;9&#37; and the mean repeatability interval &#40;r&#41; was 24&#46;6mg&#47;100g&#46; In values above the median&#44; the mean phosphorus test in the total sample was 205&#46;3 &#40;range 161&#46;2-790&#46;3&#41; mg&#47;100g&#44; the mean SD was 10&#46;3mg&#47;100g&#44; the CV mean was 5&#46;4&#37; and the mean repeatability interval &#40;r&#41; was 28&#46;38mg&#47;100g&#46; The CV was significantly lower &#40;5&#46;3&#37; vs&#46; 7&#46;9&#37;&#59; <span class="elsevierStyleItalic">p</span>&#61;&#46;016&#41; in products with values above the median phosphorus content&#46; There were no significant differences in the r value&#46;</p><p class="elsevierStylePara">In dairy products&#44; the high phosphorus content is known&#44; which increases in processed milk&#46; Soy milk contributes half the phosphorus with a similar amount of proteins&#44; and as such&#44; it may be used in some patients&#44; although we must bear in mind the problem of its palatability&#46; Cheeses for melting and grating have phosphorus-containing additives in the form of melting salts&#46; It must be noted that in fresh cheeses such as Burgos&#44; the most tolerated in the dietary recommendations for our patients&#44; we detected a high phosphorus-protein ratio in the six samples taken in two products &#40;between 18&#46;9 and 20&#46;4mg&#47;g&#41;&#44; which is much higher than that displayed in two of the tables &#40;13&#46;7mg&#47;g&#41;&#46; Overall&#44; the products without phosphorus additives have a phosphorus-protein ratio of 10&#46;2mg&#47;g and those that contain these additives have a ratio of 15&#46;3mg&#47;g&#46;</p><p class="elsevierStylePara">Within cereals&#44; simple products&#44; such as Marie biscuits or white bread have a reasonable phosphorus-protein ratio of between 11&#46;7 and 12&#46;1mg&#47;100g&#46; Different brands of sliced bread may or may not include phosphorus additives&#44; with a 23&#37; increase in phosphorus content in those that contain them&#46; &#8220;Spongy&#8221; products&#44; such as cupcakes&#44; or sobao cakes &#160;have a high phosphorus content&#44; since their dough requires phosphorus-containing additives&#44; while products such as croissants reduce the phosphorus quantity since they do not include these additives&#46; Products without phosphorus-containing additives have a phosphorus-protein ratio of 11&#46;4mg&#47;g and those that contain these additives have a ratio of 25&#46;7mg&#47;g&#46; The tables display contradictory values for Marie biscuits&#44; sobao cakes&#44; croissants and chocolate cookies&#46;</p><p class="elsevierStylePara">The phosphorus-protein ratio in sausages decreases as the quality of the products increases&#44; since they require fewer preservatives and flavouring&#46; Specific products such as cooked ham&#44; which do display the absence of phosphates on their labels effectively have a significant reduction in phosphorus content&#44; of around 33&#37;&#46; Products that we may recommend to our patients&#44; such as cold meats that are low in fat and salt&#44; may have phosphorus-containing additives to give them texture and taste&#46; Products without phosphorus-containing additives have a phosphorus-protein ratio of 10&#46;2mg&#47;g and those that contain these additives have a ratio of 15&#46;5mg&#47;g&#46; The tables do not provide information about products without phosphates&#44; and some low-phosphorus values in smoked and chopped bacon&#44; chorizo and <span class="elsevierStyleItalic">fuet</span> salami are surprising&#44; as well as contradictory data for chorizo&#44; cooked ham and Bologna sausage&#46;</p><p class="elsevierStylePara">The results for meat products and fish were reported in a previous study<span class="elsevierStyleSup">10</span>&#46; In summary&#44; we can say that the phosphorus-protein ratio is higher in processed meat products &#40;15&#46;83mg&#47;g&#41; than in breaded products &#40;11&#46;04mg&#47;g&#41; and frozen products &#40;10&#46;5mg&#47;g&#41;&#44; and is lower in fresh &#40;8&#46;41mg&#47;g&#41; and refrigerated meat products &#40;8&#46;78mg&#47;g&#41;&#46; Fresh white fish has a phosphorus-protein ratio of 8&#46;58g&#47;g while in frozen white fish&#44; it increases by 22&#37; &#40;10&#46;3mg&#47;g&#41; and in breaded white fish&#44; by 46&#37; &#40;12&#46;54mg&#47;g&#41;&#46; The information in the tables is poor and confusing&#44; without reference to the brands analysed&#46; We should highlight the reasonable phosphorus content in oily fish such as fresh salmon&#44; frozen salmon and frozen swordfish &#40;between 10&#46;29 and 11&#46;92mg&#47;g&#41;&#44; data that coincide with the table values for salmon &#40;phosphorus-protein ratio between 12 and 12&#46;9mg&#47;g&#41;&#44; although there are conflicting values for swordfish &#40;phosphorus-protein ratio of 29&#46;8mg&#47;g in the Moreiras table&#41;&#46;</p><p class="elsevierStylePara">The wide diversity of refrigerated-prepared foods makes a systemic evaluation difficult&#46; Their phosphorus content hardly appears in the tables&#44; and the information is conflicting and confusing&#46; In general&#44; they have additives and high amounts of phosphorus&#44; although&#44; in some cases the phosphorus-protein ratio would mean they could be included to a limited extent in our patients&#8217; diets&#58; meatballs and chicken croquettes&#44; pies and tuna patties&#44; fresh spaghetti and fideu&#224;&#46; We also found that some simple pizzas &#40;<span class="elsevierStyleItalic">r<span class="elsevierStyleItalic">omana</span></span>&#44; cooked ham and cheese pizza&#41; do not contain excessively high quantities of phosphorus&#46; Products without phosphorus additives have a phosphorus-protein ratio of 13&#46;3mg&#47;g and those that contain these additives have a ratio of 18&#46;7mg&#47;g&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">&#160;</span></p><p class="elsevierStylePara"><span class="elsevierStyleBold">DISCUSSION</span></p><p class="elsevierStylePara"><span class="elsevierStyleBold">&#160;</span></p><p class="elsevierStylePara">The increased consumption of processed foods&#44; with the extensive use of phosphorus additives&#44; complicates dietary management of CKD patients&#46; The diverse application of these additives &#40;pH regulators&#44; antioxidants&#44; protein stabilisers&#44; flavour enhancers&#44; colour enhancers&#44; melting salts in cheeses&#44; dough enhancers and baking powder&#41; means that they may contribute up to a third of dietary phosphorus<span class="elsevierStyleSup">15</span>&#46; Leon et al&#46;&#44; in supermarkets in the US&#44; detected that almost 50&#37; of foods have phosphorus-containing additives&#44; increasing the phosphorus quantity by 67mg&#47;100g&#46; The presence of additives is common in refrigerated-frozen and packaged products&#44; cereals and yogurts&#44; and in general&#44; the products that contain them are cheaper<span class="elsevierStyleSup">16</span>&#46;</p><p class="elsevierStylePara">Current regulations make phosphorus contribution estimations difficult&#58; producers are not required to display their quantities on the labels&#44; variable quantities are allowed&#44; since they can set their limit according to maximum amounts and the contribution of these additives is not clearly defined in the food composition tables<span class="elsevierStyleSup">17</span>&#46; Therefore&#44; we must interpret the phosphorus contribution calculation with caution by dietary survey<span class="elsevierStyleSup">18</span>&#44; and we recommend questionnaires that record the normal intake of different foods and their form of preparation<span class="elsevierStyleSup">19</span>&#46;</p><p class="elsevierStylePara">In the dietary education of CKD patients&#44; we must be aware of this extra contribution in the form of hidden phosphorus<span class="elsevierStyleSup">20</span>&#46; Some authors are optimistic and consider that by recognising the problem&#44; we can provide better options<span class="elsevierStyleSup">21</span>&#46; However&#44; poor knowledge of the phosphorus content of many products limits our actions&#44; which do not usually go beyond recommending intake of non-processed foods&#46; This option is increasingly complicated&#44; since in modern society&#44; processed foods surround our patients&#44; making regular access to natural foods difficult&#46; We must study more specific dietary interventions that include information about phosphorus-containing additives&#46; Of the list of additives authorised&#44; only a few are a source of phosphorus and they are displayed on labels with a letter and number format&#58; phosphoric acid &#40;E338&#41;&#44; phosphates &#40;E339&#44; E340&#44; E341&#44; E343&#41;&#44; diphosphates &#40;E450&#41;&#44; triphosphates &#40;E451&#41; and polyphosphates &#40;E452&#41;&#46; Sullivan et al&#46; achieved a moderate but significant decrease in serum phosphorus levels of 0&#46;6mg&#47;dl&#44; by adding data on phosphorus-containing additives to patient dietary information<span class="elsevierStyleSup">22</span>&#46;</p><p class="elsevierStylePara">Other factors complicate the limitation of phosphorus contributions&#46; The quantities permitted are relatively high&#44; since their limits are designed more to avoid fraud than being based on a dietary risk&#59; in some products &#40;refrigerated&#44; frozen and packaged foods in supermarkets&#41;&#44; the regulations allow phosphorus-containing additives without a specific indication thereof on the list of ingredients<span class="elsevierStyleSup">23</span> and in other processed products &#40;pizza&#44; tortellini&#44; cheese paninis&#44; etc&#46;&#41;&#44; it is surprising that there are no phosphorus-containing additives on the labels&#46; This may be due to current legislation&#44; which according to the &#8220;General regulations for labelling&#44; presentation and advertising of foodstuffs&#8221;&#44; it is not compulsory to declare in the list of ingredients additives from an ingredient if they do not have a technological function in the final product&#46; This means that in prepared or pre-cooked products&#44; there may be prepared dough with phosphorus-containing additives&#44; melted cheese with phosphates&#44; crab sticks with phosphates&#44; etc&#46; whose phosphorus content is not listed on the labels&#46;</p><p class="elsevierStylePara">In this study on 118 products&#44; we aim to provide complete information about the phosphorus content of the processed products reviewed in previous studies<span class="elsevierStyleSup">10&#44;24</span>&#44; displaying data on the normal foods in our setting&#44; noting the differences with fresh food and the discrepancy with food composition tables&#46; We consider it important to remark that nephrologists&#44; nutritionists and nephrology nursing staff should be aware of these barriers in order to recognise a potential for the reduction of phosphorus&#44; while maintaining protein intake&#46; Intake of natural foods that are not pre-cooked and the phosphorus content of some soft drinks &#40;particularly cola&#41; are important aspects that we should consider<span class="elsevierStyleSup">25</span>&#46;</p><p class="elsevierStylePara">The study limitations are those that are unavoidable in any approach to this problem&#46; It was a cross-sectional study carried out in a specific geographic area&#44; new products often appear and at any time there may be changes in the processing of the food&#44; which may alter its phosphorus content &#40;the quantities permitted according to current legislation are indicated with &#8220;up to xxx grams of P205 per kg or litre&#8221;&#44; with a generally high level that may be variable&#41;&#46; These limitations highlight the importance of the need for dietary advice clinics and prospective studies to assess whether we can adopt truly effective measures&#46;</p><p class="elsevierStylePara">We must be aware of the excessive phosphorus contribution of phosphorus additives without protein contribution&#46; Patients must be provided with this information at dietary advice clinics&#44; and must individually become accustomed to reviewing product labels&#59; prospective studies are recommended to assess the effectiveness of the measures&#46; It is obvious that this problem requires healthcare policy actions&#44; such as changes to the labelling that make it compulsory to display the real phosphorus content of the product and encourage the preparation of products with a low phosphorus content and alternatives to phosphorus additives&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">&#160;</span></p><p class="elsevierStylePara"><span class="elsevierStyleBold">Conflicts of interest</span></p><p class="elsevierStylePara"><span class="elsevierStyleBold">&#160;</span></p><p class="elsevierStylePara">The authors declare that they have no conflicts of interest related to the contents of this article&#46;</p><p class="elsevierStylePara"><a href="grande&#47;12406&#95;16025&#95;59929&#95;en&#95;t1&#95;copy1&#46;jpg" class="elsevierStyleCrossRefs"><img src="12406_16025_59929_en_t1_copy1.jpg" alt="Results of the phosphorus and protein composition of foods and the phosphorus-protein ratio according to the tests by the Arag&#243;n Agri-Food Research Centre&#46; Dairy products&#44; cereals and cold meats "></img></a></p><p class="elsevierStylePara">Table 1&#46; Results of the phosphorus and protein composition of foods and the phosphorus-protein ratio according to the tests by the Arag&#243;n Agri-Food Research Centre&#46; Dairy products&#44; cereals and cold meats </p><p class="elsevierStylePara"><a href="grande&#47;12406&#95;16025&#95;59930&#95;en&#95;t2&#46;jpg" class="elsevierStyleCrossRefs"><img src="12406_16025_59930_en_t2.jpg" alt="Results of the phosphorus and protein composition of foods and the phosphorus-protein ratio according to the tests by the Arag&#243;n Agri-Food Research Centre&#46; Fresh&#44; refrigerated&#44; frozen&#44; breaded and processed meats"></img></a></p><p class="elsevierStylePara">Table 2&#46; Results of the phosphorus and protein composition of foods and the phosphorus-protein ratio according to the tests by the Arag&#243;n Agri-Food Research Centre&#46; Fresh&#44; refrigerated&#44; frozen&#44; breaded and processed meats</p><p class="elsevierStylePara"><a href="grande&#47;12406&#95;16025&#95;59931&#95;en&#95;t3&#46;jpg" class="elsevierStyleCrossRefs"><img src="12406_16025_59931_en_t3.jpg" alt="Results of the phosphorus and protein composition of foods and the phosphorus-protein ratio according to the tests by the Arag&#243;n Agri-Food Research Centre&#46; Fresh&#44; frozen and breaded fish and surimi"></img></a></p><p class="elsevierStylePara">Table 3&#46; Results of the phosphorus and protein composition of foods and the phosphorus-protein ratio according to the tests by the Arag&#243;n Agri-Food Research Centre&#46; Fresh&#44; frozen and breaded fish and surimi</p><p class="elsevierStylePara"><a href="grande&#47;12406&#95;16025&#95;59932&#95;en&#95;t4&#46;jpg" class="elsevierStyleCrossRefs"><img src="12406_16025_59932_en_t4.jpg" alt="Phosphorus-protein ratio according to the values of the food composition tables&#46; Dairy products&#44; cereals&#44; cold meats&#44; refrigerated-frozen products and fish"></img></a></p><p class="elsevierStylePara">Table 4&#46; Phosphorus-protein ratio according to the values of the food composition tables&#46; Dairy products&#44; cereals&#44; cold meats&#44; refrigerated-frozen products and fish</p>"
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        "resumen" => "<p class="elsevierStylePara"><span class="elsevierStyleBold">Introducci&#243;n y objetivos&#58;</span> El incremento del consumo de alimentos procesados que incluyen aditivos con f&#243;sforo nos lleva a plantearnos la siguiente hip&#243;tesis de trabajo&#58; la utilizaci&#243;n de aditivos ricos en fosfatos f&#225;cilmente absorbibles en los alimentos procesados supone un incremento significativo del f&#243;sforo contenido en la dieta&#44; que puede considerarse como f&#243;sforo oculto al no quedar registrado en las tablas de composici&#243;n de alimentos&#46; <span class="elsevierStyleBold">Material y m&#233;todo&#58;</span> Se determina la cantidad de f&#243;sforo contenido en 118 productos procesados mediante espectrofotometr&#237;a&#46; Se contrastan los resultados con las tablas de composici&#243;n de alimentos del Centro de Ense&#241;anza Superior de Nutrici&#243;n y Diet&#233;tica&#44; de Morandeira y de la Red BEDCA&#46; <span class="elsevierStyleBold">Resultados&#58;</span> El procesamiento de los alimentos con frecuencia implica el uso de aditivos fosf&#243;ricos&#46; Los productos en cuya etiqueta figuran estos aditivos presentan un mayor contenido en f&#243;sforo y una mayor ratio f&#243;sforo&#47;prote&#237;nas&#46; Apreciamos discordancia con las tablas de composici&#243;n de alimentos en la cantidad de f&#243;sforo determinada en una parte importante de los productos&#46; El contenido en f&#243;sforo de alimentos refrigerados-elaborados apenas figura en las tablas&#46; <span class="elsevierStyleBold">Conclusiones&#58;</span> El etiquetado de los productos ofrece informaci&#243;n escasa sobre el contenido en f&#243;sforo&#46; Apreciamos disparidad de contenido de f&#243;sforo en determinados alimentos respecto a las tablas de composici&#243;n de alimentos&#46; Deber&#237;amos formar a nuestros pacientes en la revisi&#243;n de los aditivos en las etiquetas y en la limitaci&#243;n de los alimentos procesados&#46; Una aproximaci&#243;n al problema debe incluir actuaciones de pol&#237;tica sanitaria&#58; las empresas deber&#237;an analizar el contenido en f&#243;sforo de sus productos&#44; reflejar este dato en el etiquetado e incorporarlo en las tablas de composici&#243;n de alimentos&#46; Podr&#237;an establecerse incentivos para elaborar alimentos con contenido bajo en f&#243;sforo y alternativas a los aditivos que contienen f&#243;sforo&#46;</p>"
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        "resumen" => "<p class="elsevierStylePara"><span class="elsevierStyleBold">Introduction and objectives&#58; </span>An increased consumption of processed foods that include phosphorus-containing additives has led us to propose the following working hypothesis&#58; using phosphate-rich additives that can be easily absorbed in processed foods involves a significant increase in phosphorus in the diet&#44; which may be considered as hidden phosphorus since it is not registered in the food composition tables&#46; <span class="elsevierStyleBold">Materials and method&#58;</span> The quantity of phosphorus contained in 118 processed products was determined by spectrophotometry and the results were contrasted with the food composition tables of the Higher Education Centre of Nutrition and Diet&#44; those of Morandeira and those of the BEDCA &#40;Spanish Food Composition Database&#41; Network&#46; <span class="elsevierStyleBold">Results&#58; </span>Food processing frequently involves the use of phosphoric additives&#46; The products whose label contains these additives have higher phosphorus content and higher phosphorus-protein ratio&#46; We observed a discrepancy with the food composition tables in terms of the amount of phosphorus determined in a sizeable proportion of the products&#46; The phosphorus content of prepared refrigerated foods hardly appears in the tables&#46;<span class="elsevierStyleBold"> Conclusions&#58;</span> Product labels provide little information on phosphorus content&#46; We observed a discrepancy in phosphorus content in certain foods with respect to the food composition tables&#46; We should educate our patients on reviewing the additives on the labels and on the limitation of processed foods&#46; There must be health policy actions to deal with the problem&#58; companies should analyse the phosphorus content of their products&#44; display the correct information on their labels and incorporate it into the food composition tables&#46; Incentives could be established to prepare food with a low phosphorus content and alternatives to phosphorus-containing additives&#46;</p>"
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Hidden sources of phosphorus: presence of phosphorus-containing additives in processed foods
Fuentes ocultas de fósforo: presencia de aditivos con contenido en fósforo en los alimentos procesados
Grupo de Investigación ERC Aragóna, Luis M. Lou-Arnalb, Laura Arnaudas-Casanovab, Alberto Caverni-Muñozc, Antonio Vercet-Tormod, Rocío Caramelo-Gutiérrezb, Paula Munguía-Navarrob, Belén Campos-Gutiérreze, Mercedes García-Menaf, Belén Moragreraf, Rosario Moreno-Lópezg, Sara Bielsa-Graciah, Marta Cuberes-Izquierdoi
a Instituto Aragonés de Ciencias de la Salud, Zaragoza,
b Servicio de Nefrología, Hospital Universitario Miguel Servet, Zaragoza,
c Servicio de Nutrición y Dietética, Alcer Ebro, Zaragoza,
d Departamento de Tecnología de los Alimentos, Facultad de las Ciencias de la Salud y del Deporte, Zaragoza,
e Servicio de Nefrología, Hospital de Alcañiz, Teruel,
f Servicio de Nefrología, Hospital San Juan de Dios, Zaragoza,
g Servicio de Nefrología, Hospital Militar de la Defensa, Zaragoza,
h Servicio de Nefrología, Hospital Obispo Polanco, Teruel,
i Servicio de Nefrología, Hospital de Tudela, Navarra,
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    "textoCompleto" => "<p class="elsevierStylePara"><span class="elsevierStyleBold">INTRODUCTION</span></p><p class="elsevierStylePara"><span class="elsevierStyleBold">&#160;</span></p><p class="elsevierStylePara">High levels of phosphorus are related to the development of arteriosclerosis and bone disease in patients with chronic kidney disease &#40;CKD&#41;<span class="elsevierStyleSup">1</span>&#46; Phosphorus intake is also a public health problem given its impact on cardiovascular risk in the general population &#40;&#8220;new cholesterol&#8221;&#41;<span class="elsevierStyleSup">2-4</span>&#46; The wide and growing use of these additives<span class="elsevierStyleSup">5</span>&#44; in relatively high quantities<span class="elsevierStyleSup">6</span>&#44; without clear regulations in the labelling<span class="elsevierStyleSup">7&#44;8</span> and usually without their inclusion in the food composition tables means that there is a high phosphorus contribution&#44; which we can consider to be &#8220;hidden phosphorus&#8221;<span class="elsevierStyleSup">9</span>&#46;</p><p class="elsevierStylePara">The dietary recommendations in CKD aim to obtain an adequate protein contribution with reduced phosphorus intake&#44; which is a difficult balance to achieve&#46; Additives provide phosphorus without protein&#44; which is something we should consider in the dietary education of our patients&#46; However&#44; it is difficult to know the real phosphorus contribution in the diet&#44; given the limited information on the product labels and the few and confusing data in the food composition tables<span class="elsevierStyleSup">10</span>&#46;</p><p class="elsevierStylePara">The main objective of this study was to provide information about the real phosphorus content determined by spectrophotometry in an extensive group of 118 natural products and with different degrees of processing&#46; As secondary objectives&#44; we aimed to indicate the differences and contradictions with respect to the different food composition tables and make nephrologists&#44; dieticians and nursing staff aware of this barrier in dietary education&#44; in order to facilitate practical training for our patients&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">&#160;</span></p><p class="elsevierStylePara"><span class="elsevierStyleBold">MATERIAL AND METHOD</span></p><p class="elsevierStylePara"><span class="elsevierStyleBold">&#160;</span></p><p class="elsevierStylePara">Study design&#58; descriptive cross-sectional study with analysis of food product components&#46;</p><p class="elsevierStylePara">We received financing of the Arag&#243;n Health Sciences Institute over two years to determine phosphorus and protein in 118 fresh products with different degrees of processing&#46;</p><p class="elsevierStylePara">In the first 52 products we analysed three different batches&#46; After verifying the reproducibility of the phosphorus measurements&#44; we acquired two batches of the following 66 products analysed and carried out a third test when the values were conflicting &#40;coefficient of variation &#91;CV&#93; &#91;standard deviation &#40;SD&#47;average value&#93; &#8805;10&#37;&#41;&#46;</p><p class="elsevierStylePara">The detailed methodology of the study is displayed in a previous publication<span class="elsevierStyleSup">10</span>&#46; Total phosphorus was determined using molecular absorption spectrophotometry and total protein content was determined by the Kjeldahl method&#46; These tests were carried out in the Arag&#243;n Food Technology and Research Centre&#46; The averages of the tests were considered to be phosphorus measured&#46; Protein content&#44; which was more standardised&#44; was only measured in the first batch of each product&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">&#160;</span></p><p class="elsevierStylePara"><span class="elsevierStyleBold">Expression of results</span></p><p class="elsevierStylePara"><span class="elsevierStyleBold">&#160;</span></p><p class="elsevierStylePara">Phosphorus content was expressed in mg&#47;100g of the product and the protein content was expressed in g&#47;100g of the product&#46; We added the calculation of the phosphorus &#91;mg&#93;-protein &#91;g&#93; ratio due to its relevance in our patients<span class="elsevierStyleSup">11</span>&#46; The Kidney Disease Outcomes Quality Initiative guidelines recommend a dietary ratio of 10-12mg&#47;g&#46;</p><p class="elsevierStylePara">We reviewed the information on phosphorus and protein content of the different food processed in the Moreiras food composition table<span class="elsevierStyleSup">12</span>&#44; that of the Nutrition and Diet Higher Education Centre<span class="elsevierStyleSup">13</span> and that of the BEDCA &#40;Spanish Food Composition Database&#41; of the Ministry of Science and Innovation&#44; Spanish Food Safety and Nutrition Agency<span class="elsevierStyleSup">14</span>&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">&#160;</span></p><p class="elsevierStylePara"><span class="elsevierStyleBold">Statistical analysis</span></p><p class="elsevierStylePara"><span class="elsevierStyleBold">&#160;</span></p><p class="elsevierStylePara">The description of quantitative variables was carried out with their mean &#177; SD and the qualitative variables with the distribution of frequencies&#46; We carried out a phosphorus content repeatability study in various foods&#44; with two or three repetitions for each sample&#46; We calculated the mean&#44; SD&#44; and the CV &#40;CV&#61;SD&#47;mean&#41; expressed as a &#37; and the repeatability interval &#40;r&#61;SDx2&#46;8&#41; for each set of repeated tests of the same sample&#46; Subsequently&#44; we calculated the means of all the previous tests in all the samples&#46; We considered CV values between phosphorus tests in the same sample &#60;10&#37; to be acceptable&#46; We considered <span class="elsevierStyleItalic">p</span> values &#60;&#46;05 to be statistically significant&#46; We analysed the data with the SPSS version 15&#46;0 software&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">&#160;</span></p><p class="elsevierStylePara"><span class="elsevierStyleBold">RESULTS</span></p><p class="elsevierStylePara"><span class="elsevierStyleBold">&#160;</span></p><p class="elsevierStylePara">The results obtained in our tests are shown in Tables 1&#44; 2 and 3&#46; For a comparison&#44; the data of the food composition tables are expressed in Table 4&#46;</p><p class="elsevierStylePara">Of the 118 products analysed&#44; 50 &#40;43&#46;2&#37;&#41; contained phosphorus additives&#44; according to the labels&#46; The mean phosphorus value in the total samples was 162&#46;1 &#40;range 21&#46;4-790&#46;3&#41; mg&#47;100g&#44; the mean SD was 9&#46;93mg&#47;100g&#44; the mean CV was 6&#46;7&#37; and the mean repeatability interval &#40;r&#41; was 29&#46;3mg&#47;100g &#40;this implies that 95&#37; of the time&#44; a new test&#44; repeated again&#44; did not differ by more than 29&#46;3mg&#47;dl from the mean of the previous tests&#41;&#46; In values below the median&#44; the mean of the phosphorus tests in the total sample was 120&#46;3 &#40;range 21&#46;4-160&#46;6&#41; mg&#47;100g&#44; the mean of the SD was 8&#46;7mg&#47;100g&#44; the mean of the CV was 7&#46;9&#37; and the mean repeatability interval &#40;r&#41; was 24&#46;6mg&#47;100g&#46; In values above the median&#44; the mean phosphorus test in the total sample was 205&#46;3 &#40;range 161&#46;2-790&#46;3&#41; mg&#47;100g&#44; the mean SD was 10&#46;3mg&#47;100g&#44; the CV mean was 5&#46;4&#37; and the mean repeatability interval &#40;r&#41; was 28&#46;38mg&#47;100g&#46; The CV was significantly lower &#40;5&#46;3&#37; vs&#46; 7&#46;9&#37;&#59; <span class="elsevierStyleItalic">p</span>&#61;&#46;016&#41; in products with values above the median phosphorus content&#46; There were no significant differences in the r value&#46;</p><p class="elsevierStylePara">In dairy products&#44; the high phosphorus content is known&#44; which increases in processed milk&#46; Soy milk contributes half the phosphorus with a similar amount of proteins&#44; and as such&#44; it may be used in some patients&#44; although we must bear in mind the problem of its palatability&#46; Cheeses for melting and grating have phosphorus-containing additives in the form of melting salts&#46; It must be noted that in fresh cheeses such as Burgos&#44; the most tolerated in the dietary recommendations for our patients&#44; we detected a high phosphorus-protein ratio in the six samples taken in two products &#40;between 18&#46;9 and 20&#46;4mg&#47;g&#41;&#44; which is much higher than that displayed in two of the tables &#40;13&#46;7mg&#47;g&#41;&#46; Overall&#44; the products without phosphorus additives have a phosphorus-protein ratio of 10&#46;2mg&#47;g and those that contain these additives have a ratio of 15&#46;3mg&#47;g&#46;</p><p class="elsevierStylePara">Within cereals&#44; simple products&#44; such as Marie biscuits or white bread have a reasonable phosphorus-protein ratio of between 11&#46;7 and 12&#46;1mg&#47;100g&#46; Different brands of sliced bread may or may not include phosphorus additives&#44; with a 23&#37; increase in phosphorus content in those that contain them&#46; &#8220;Spongy&#8221; products&#44; such as cupcakes&#44; or sobao cakes &#160;have a high phosphorus content&#44; since their dough requires phosphorus-containing additives&#44; while products such as croissants reduce the phosphorus quantity since they do not include these additives&#46; Products without phosphorus-containing additives have a phosphorus-protein ratio of 11&#46;4mg&#47;g and those that contain these additives have a ratio of 25&#46;7mg&#47;g&#46; The tables display contradictory values for Marie biscuits&#44; sobao cakes&#44; croissants and chocolate cookies&#46;</p><p class="elsevierStylePara">The phosphorus-protein ratio in sausages decreases as the quality of the products increases&#44; since they require fewer preservatives and flavouring&#46; Specific products such as cooked ham&#44; which do display the absence of phosphates on their labels effectively have a significant reduction in phosphorus content&#44; of around 33&#37;&#46; Products that we may recommend to our patients&#44; such as cold meats that are low in fat and salt&#44; may have phosphorus-containing additives to give them texture and taste&#46; Products without phosphorus-containing additives have a phosphorus-protein ratio of 10&#46;2mg&#47;g and those that contain these additives have a ratio of 15&#46;5mg&#47;g&#46; The tables do not provide information about products without phosphates&#44; and some low-phosphorus values in smoked and chopped bacon&#44; chorizo and <span class="elsevierStyleItalic">fuet</span> salami are surprising&#44; as well as contradictory data for chorizo&#44; cooked ham and Bologna sausage&#46;</p><p class="elsevierStylePara">The results for meat products and fish were reported in a previous study<span class="elsevierStyleSup">10</span>&#46; In summary&#44; we can say that the phosphorus-protein ratio is higher in processed meat products &#40;15&#46;83mg&#47;g&#41; than in breaded products &#40;11&#46;04mg&#47;g&#41; and frozen products &#40;10&#46;5mg&#47;g&#41;&#44; and is lower in fresh &#40;8&#46;41mg&#47;g&#41; and refrigerated meat products &#40;8&#46;78mg&#47;g&#41;&#46; Fresh white fish has a phosphorus-protein ratio of 8&#46;58g&#47;g while in frozen white fish&#44; it increases by 22&#37; &#40;10&#46;3mg&#47;g&#41; and in breaded white fish&#44; by 46&#37; &#40;12&#46;54mg&#47;g&#41;&#46; The information in the tables is poor and confusing&#44; without reference to the brands analysed&#46; We should highlight the reasonable phosphorus content in oily fish such as fresh salmon&#44; frozen salmon and frozen swordfish &#40;between 10&#46;29 and 11&#46;92mg&#47;g&#41;&#44; data that coincide with the table values for salmon &#40;phosphorus-protein ratio between 12 and 12&#46;9mg&#47;g&#41;&#44; although there are conflicting values for swordfish &#40;phosphorus-protein ratio of 29&#46;8mg&#47;g in the Moreiras table&#41;&#46;</p><p class="elsevierStylePara">The wide diversity of refrigerated-prepared foods makes a systemic evaluation difficult&#46; Their phosphorus content hardly appears in the tables&#44; and the information is conflicting and confusing&#46; In general&#44; they have additives and high amounts of phosphorus&#44; although&#44; in some cases the phosphorus-protein ratio would mean they could be included to a limited extent in our patients&#8217; diets&#58; meatballs and chicken croquettes&#44; pies and tuna patties&#44; fresh spaghetti and fideu&#224;&#46; We also found that some simple pizzas &#40;<span class="elsevierStyleItalic">r<span class="elsevierStyleItalic">omana</span></span>&#44; cooked ham and cheese pizza&#41; do not contain excessively high quantities of phosphorus&#46; Products without phosphorus additives have a phosphorus-protein ratio of 13&#46;3mg&#47;g and those that contain these additives have a ratio of 18&#46;7mg&#47;g&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">&#160;</span></p><p class="elsevierStylePara"><span class="elsevierStyleBold">DISCUSSION</span></p><p class="elsevierStylePara"><span class="elsevierStyleBold">&#160;</span></p><p class="elsevierStylePara">The increased consumption of processed foods&#44; with the extensive use of phosphorus additives&#44; complicates dietary management of CKD patients&#46; The diverse application of these additives &#40;pH regulators&#44; antioxidants&#44; protein stabilisers&#44; flavour enhancers&#44; colour enhancers&#44; melting salts in cheeses&#44; dough enhancers and baking powder&#41; means that they may contribute up to a third of dietary phosphorus<span class="elsevierStyleSup">15</span>&#46; Leon et al&#46;&#44; in supermarkets in the US&#44; detected that almost 50&#37; of foods have phosphorus-containing additives&#44; increasing the phosphorus quantity by 67mg&#47;100g&#46; The presence of additives is common in refrigerated-frozen and packaged products&#44; cereals and yogurts&#44; and in general&#44; the products that contain them are cheaper<span class="elsevierStyleSup">16</span>&#46;</p><p class="elsevierStylePara">Current regulations make phosphorus contribution estimations difficult&#58; producers are not required to display their quantities on the labels&#44; variable quantities are allowed&#44; since they can set their limit according to maximum amounts and the contribution of these additives is not clearly defined in the food composition tables<span class="elsevierStyleSup">17</span>&#46; Therefore&#44; we must interpret the phosphorus contribution calculation with caution by dietary survey<span class="elsevierStyleSup">18</span>&#44; and we recommend questionnaires that record the normal intake of different foods and their form of preparation<span class="elsevierStyleSup">19</span>&#46;</p><p class="elsevierStylePara">In the dietary education of CKD patients&#44; we must be aware of this extra contribution in the form of hidden phosphorus<span class="elsevierStyleSup">20</span>&#46; Some authors are optimistic and consider that by recognising the problem&#44; we can provide better options<span class="elsevierStyleSup">21</span>&#46; However&#44; poor knowledge of the phosphorus content of many products limits our actions&#44; which do not usually go beyond recommending intake of non-processed foods&#46; This option is increasingly complicated&#44; since in modern society&#44; processed foods surround our patients&#44; making regular access to natural foods difficult&#46; We must study more specific dietary interventions that include information about phosphorus-containing additives&#46; Of the list of additives authorised&#44; only a few are a source of phosphorus and they are displayed on labels with a letter and number format&#58; phosphoric acid &#40;E338&#41;&#44; phosphates &#40;E339&#44; E340&#44; E341&#44; E343&#41;&#44; diphosphates &#40;E450&#41;&#44; triphosphates &#40;E451&#41; and polyphosphates &#40;E452&#41;&#46; Sullivan et al&#46; achieved a moderate but significant decrease in serum phosphorus levels of 0&#46;6mg&#47;dl&#44; by adding data on phosphorus-containing additives to patient dietary information<span class="elsevierStyleSup">22</span>&#46;</p><p class="elsevierStylePara">Other factors complicate the limitation of phosphorus contributions&#46; The quantities permitted are relatively high&#44; since their limits are designed more to avoid fraud than being based on a dietary risk&#59; in some products &#40;refrigerated&#44; frozen and packaged foods in supermarkets&#41;&#44; the regulations allow phosphorus-containing additives without a specific indication thereof on the list of ingredients<span class="elsevierStyleSup">23</span> and in other processed products &#40;pizza&#44; tortellini&#44; cheese paninis&#44; etc&#46;&#41;&#44; it is surprising that there are no phosphorus-containing additives on the labels&#46; This may be due to current legislation&#44; which according to the &#8220;General regulations for labelling&#44; presentation and advertising of foodstuffs&#8221;&#44; it is not compulsory to declare in the list of ingredients additives from an ingredient if they do not have a technological function in the final product&#46; This means that in prepared or pre-cooked products&#44; there may be prepared dough with phosphorus-containing additives&#44; melted cheese with phosphates&#44; crab sticks with phosphates&#44; etc&#46; whose phosphorus content is not listed on the labels&#46;</p><p class="elsevierStylePara">In this study on 118 products&#44; we aim to provide complete information about the phosphorus content of the processed products reviewed in previous studies<span class="elsevierStyleSup">10&#44;24</span>&#44; displaying data on the normal foods in our setting&#44; noting the differences with fresh food and the discrepancy with food composition tables&#46; We consider it important to remark that nephrologists&#44; nutritionists and nephrology nursing staff should be aware of these barriers in order to recognise a potential for the reduction of phosphorus&#44; while maintaining protein intake&#46; Intake of natural foods that are not pre-cooked and the phosphorus content of some soft drinks &#40;particularly cola&#41; are important aspects that we should consider<span class="elsevierStyleSup">25</span>&#46;</p><p class="elsevierStylePara">The study limitations are those that are unavoidable in any approach to this problem&#46; It was a cross-sectional study carried out in a specific geographic area&#44; new products often appear and at any time there may be changes in the processing of the food&#44; which may alter its phosphorus content &#40;the quantities permitted according to current legislation are indicated with &#8220;up to xxx grams of P205 per kg or litre&#8221;&#44; with a generally high level that may be variable&#41;&#46; These limitations highlight the importance of the need for dietary advice clinics and prospective studies to assess whether we can adopt truly effective measures&#46;</p><p class="elsevierStylePara">We must be aware of the excessive phosphorus contribution of phosphorus additives without protein contribution&#46; Patients must be provided with this information at dietary advice clinics&#44; and must individually become accustomed to reviewing product labels&#59; prospective studies are recommended to assess the effectiveness of the measures&#46; It is obvious that this problem requires healthcare policy actions&#44; such as changes to the labelling that make it compulsory to display the real phosphorus content of the product and encourage the preparation of products with a low phosphorus content and alternatives to phosphorus additives&#46;</p><p class="elsevierStylePara"><span class="elsevierStyleBold">&#160;</span></p><p class="elsevierStylePara"><span class="elsevierStyleBold">Conflicts of interest</span></p><p class="elsevierStylePara"><span class="elsevierStyleBold">&#160;</span></p><p class="elsevierStylePara">The authors declare that they have no conflicts of interest related to the contents of this article&#46;</p><p class="elsevierStylePara"><a href="grande&#47;12406&#95;16025&#95;59929&#95;en&#95;t1&#95;copy1&#46;jpg" class="elsevierStyleCrossRefs"><img src="12406_16025_59929_en_t1_copy1.jpg" alt="Results of the phosphorus and protein composition of foods and the phosphorus-protein ratio according to the tests by the Arag&#243;n Agri-Food Research Centre&#46; Dairy products&#44; cereals and cold meats "></img></a></p><p class="elsevierStylePara">Table 1&#46; Results of the phosphorus and protein composition of foods and the phosphorus-protein ratio according to the tests by the Arag&#243;n Agri-Food Research Centre&#46; Dairy products&#44; cereals and cold meats </p><p class="elsevierStylePara"><a href="grande&#47;12406&#95;16025&#95;59930&#95;en&#95;t2&#46;jpg" class="elsevierStyleCrossRefs"><img src="12406_16025_59930_en_t2.jpg" alt="Results of the phosphorus and protein composition of foods and the phosphorus-protein ratio according to the tests by the Arag&#243;n Agri-Food Research Centre&#46; Fresh&#44; refrigerated&#44; frozen&#44; breaded and processed meats"></img></a></p><p class="elsevierStylePara">Table 2&#46; Results of the phosphorus and protein composition of foods and the phosphorus-protein ratio according to the tests by the Arag&#243;n Agri-Food Research Centre&#46; Fresh&#44; refrigerated&#44; frozen&#44; breaded and processed meats</p><p class="elsevierStylePara"><a href="grande&#47;12406&#95;16025&#95;59931&#95;en&#95;t3&#46;jpg" class="elsevierStyleCrossRefs"><img src="12406_16025_59931_en_t3.jpg" alt="Results of the phosphorus and protein composition of foods and the phosphorus-protein ratio according to the tests by the Arag&#243;n Agri-Food Research Centre&#46; Fresh&#44; frozen and breaded fish and surimi"></img></a></p><p class="elsevierStylePara">Table 3&#46; Results of the phosphorus and protein composition of foods and the phosphorus-protein ratio according to the tests by the Arag&#243;n Agri-Food Research Centre&#46; Fresh&#44; frozen and breaded fish and surimi</p><p class="elsevierStylePara"><a href="grande&#47;12406&#95;16025&#95;59932&#95;en&#95;t4&#46;jpg" class="elsevierStyleCrossRefs"><img src="12406_16025_59932_en_t4.jpg" alt="Phosphorus-protein ratio according to the values of the food composition tables&#46; Dairy products&#44; cereals&#44; cold meats&#44; refrigerated-frozen products and fish"></img></a></p><p class="elsevierStylePara">Table 4&#46; Phosphorus-protein ratio according to the values of the food composition tables&#46; Dairy products&#44; cereals&#44; cold meats&#44; refrigerated-frozen products and fish</p>"
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        "resumen" => "<p class="elsevierStylePara"><span class="elsevierStyleBold">Introducci&#243;n y objetivos&#58;</span> El incremento del consumo de alimentos procesados que incluyen aditivos con f&#243;sforo nos lleva a plantearnos la siguiente hip&#243;tesis de trabajo&#58; la utilizaci&#243;n de aditivos ricos en fosfatos f&#225;cilmente absorbibles en los alimentos procesados supone un incremento significativo del f&#243;sforo contenido en la dieta&#44; que puede considerarse como f&#243;sforo oculto al no quedar registrado en las tablas de composici&#243;n de alimentos&#46; <span class="elsevierStyleBold">Material y m&#233;todo&#58;</span> Se determina la cantidad de f&#243;sforo contenido en 118 productos procesados mediante espectrofotometr&#237;a&#46; Se contrastan los resultados con las tablas de composici&#243;n de alimentos del Centro de Ense&#241;anza Superior de Nutrici&#243;n y Diet&#233;tica&#44; de Morandeira y de la Red BEDCA&#46; <span class="elsevierStyleBold">Resultados&#58;</span> El procesamiento de los alimentos con frecuencia implica el uso de aditivos fosf&#243;ricos&#46; Los productos en cuya etiqueta figuran estos aditivos presentan un mayor contenido en f&#243;sforo y una mayor ratio f&#243;sforo&#47;prote&#237;nas&#46; Apreciamos discordancia con las tablas de composici&#243;n de alimentos en la cantidad de f&#243;sforo determinada en una parte importante de los productos&#46; El contenido en f&#243;sforo de alimentos refrigerados-elaborados apenas figura en las tablas&#46; <span class="elsevierStyleBold">Conclusiones&#58;</span> El etiquetado de los productos ofrece informaci&#243;n escasa sobre el contenido en f&#243;sforo&#46; Apreciamos disparidad de contenido de f&#243;sforo en determinados alimentos respecto a las tablas de composici&#243;n de alimentos&#46; Deber&#237;amos formar a nuestros pacientes en la revisi&#243;n de los aditivos en las etiquetas y en la limitaci&#243;n de los alimentos procesados&#46; Una aproximaci&#243;n al problema debe incluir actuaciones de pol&#237;tica sanitaria&#58; las empresas deber&#237;an analizar el contenido en f&#243;sforo de sus productos&#44; reflejar este dato en el etiquetado e incorporarlo en las tablas de composici&#243;n de alimentos&#46; Podr&#237;an establecerse incentivos para elaborar alimentos con contenido bajo en f&#243;sforo y alternativas a los aditivos que contienen f&#243;sforo&#46;</p>"
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        "resumen" => "<p class="elsevierStylePara"><span class="elsevierStyleBold">Introduction and objectives&#58; </span>An increased consumption of processed foods that include phosphorus-containing additives has led us to propose the following working hypothesis&#58; using phosphate-rich additives that can be easily absorbed in processed foods involves a significant increase in phosphorus in the diet&#44; which may be considered as hidden phosphorus since it is not registered in the food composition tables&#46; <span class="elsevierStyleBold">Materials and method&#58;</span> The quantity of phosphorus contained in 118 processed products was determined by spectrophotometry and the results were contrasted with the food composition tables of the Higher Education Centre of Nutrition and Diet&#44; those of Morandeira and those of the BEDCA &#40;Spanish Food Composition Database&#41; Network&#46; <span class="elsevierStyleBold">Results&#58; </span>Food processing frequently involves the use of phosphoric additives&#46; The products whose label contains these additives have higher phosphorus content and higher phosphorus-protein ratio&#46; We observed a discrepancy with the food composition tables in terms of the amount of phosphorus determined in a sizeable proportion of the products&#46; The phosphorus content of prepared refrigerated foods hardly appears in the tables&#46;<span class="elsevierStyleBold"> Conclusions&#58;</span> Product labels provide little information on phosphorus content&#46; We observed a discrepancy in phosphorus content in certain foods with respect to the food composition tables&#46; We should educate our patients on reviewing the additives on the labels and on the limitation of processed foods&#46; There must be health policy actions to deal with the problem&#58; companies should analyse the phosphorus content of their products&#44; display the correct information on their labels and incorporate it into the food composition tables&#46; Incentives could be established to prepare food with a low phosphorus content and alternatives to phosphorus-containing additives&#46;</p>"
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                0 => array:3 [
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Article information
ISSN: 20132514
Original language: English
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2024 July 87 68 155
2024 June 115 78 193
2024 May 108 72 180
2024 April 95 61 156
2024 March 97 49 146
2024 February 95 63 158
2024 January 98 50 148
2023 December 112 44 156
2023 November 161 63 224
2023 October 113 56 169
2023 September 89 43 132
2023 August 107 54 161
2023 July 187 59 246
2023 June 148 58 206
2023 May 203 129 332
2023 April 154 30 184
2023 March 122 24 146
2023 February 123 25 148
2023 January 86 47 133
2022 December 126 79 205
2022 November 144 50 194
2022 October 106 65 171
2022 September 85 59 144
2022 August 101 84 185
2022 July 111 70 181
2022 June 136 55 191
2022 May 104 59 163
2022 April 179 65 244
2022 March 151 74 225
2022 February 296 67 363
2022 January 116 79 195
2021 December 127 79 206
2021 November 153 53 206
2021 October 137 72 209
2021 September 89 85 174
2021 August 126 70 196
2021 July 92 50 142
2021 June 94 53 147
2021 May 117 63 180
2021 April 341 104 445
2021 March 208 61 269
2021 February 157 37 194
2021 January 96 36 132
2020 December 112 25 137
2020 November 62 21 83
2020 October 84 32 116
2020 September 92 23 115
2020 August 80 24 104
2020 July 108 18 126
2020 June 97 25 122
2020 May 102 15 117
2020 April 139 19 158
2020 March 157 20 177
2020 February 149 28 177
2020 January 147 35 182
2019 December 153 37 190
2019 November 109 36 145
2019 October 111 25 136
2019 September 98 20 118
2019 August 86 15 101
2019 July 107 26 133
2019 June 92 30 122
2019 May 131 25 156
2019 April 154 44 198
2019 March 75 30 105
2019 February 65 23 88
2019 January 91 40 131
2018 December 239 77 316
2018 November 298 48 346
2018 October 250 44 294
2018 September 276 43 319
2018 August 216 32 248
2018 July 171 26 197
2018 June 148 24 172
2018 May 158 18 176
2018 April 158 10 168
2018 March 144 14 158
2018 February 155 6 161
2018 January 123 6 129
2017 December 137 15 152
2017 November 136 21 157
2017 October 99 14 113
2017 September 111 6 117
2017 August 102 16 118
2017 July 87 15 102
2017 June 124 13 137
2017 May 134 13 147
2017 April 84 17 101
2017 March 137 18 155
2017 February 307 12 319
2017 January 50 22 72
2016 December 126 11 137
2016 November 191 12 203
2016 October 310 17 327
2016 September 549 12 561
2016 August 595 12 607
2016 July 353 20 373
2016 June 235 0 235
2016 May 205 0 205
2016 April 213 0 213
2016 March 206 0 206
2016 February 201 0 201
2016 January 168 0 168
2015 December 184 0 184
2015 November 194 0 194
2015 October 182 0 182
2015 September 142 0 142
2015 August 117 0 117
2015 July 199 0 199
2015 June 79 0 79
2015 May 76 0 76
2015 April 12 0 12
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Idiomas
Nefrología (English Edition)