Estimated zinc availability in school meals done with standard foods in the city of Campinas (SP), Brazil
Keywords:
Phytic acid, School feeding, Children, ZincAbstract
Objective
This study aimed to assess the molar ratios of phytate:Zn and phytatexCa:Zn/MJ in meals for school children aging from 7 to 14 years.
Methods
Recipes were standardized in a school and submitted an acceptance test by assessing meal leftovers. The availability of zinc in the usual meals was determined by calculating the molar ratios of phytate:zinc and phytatexCa:Zn/MJ. The dietary calculations were done with the program Nut Win (version 1.5) and 15 and 22 were used as cutoff values for the molar ratios of phytate:Zn and phytatexCa:Zn/MJ respectively for proper Zn absorption.
Results
The results show that 50.0% of the preparations present risk to the absorption of zinc according to the phytate:Zn ratio and 40.0% according to phytatexCa:Zn/MJ ratio; 82.0% of the diets offer less than 15.0% of the recommended calcium amounts and 63.6% are very likely to be inadequate regarding lipids.
Conclusion
The use of the molar ratios to assess the school menus indicates that zinc availability may be low. This could be reversed by serving good sources of zinc, such as meats, more often.
References
Furtuoso MCO, Ometto AMH, Pipitone MAP, Silva MV, Sturion GL. Fatores condicionantes da adesão dos alunos ao Programa de Alimentação Escolar no Brasil. Rev Nutr. 2005; 18(2):167-81.
Fundo Nacional de Desenvolvimento da Educação. Resolução nº 35, de 1 de outubro de 2003. Estende atendimento do PNAE a creches e estabelece valores per capita. [acesso 2005 ago 9]. Disponível em: <http://www.fnde.gov.br/home/legislacao_manuais/alimentacao_escolar/res035_01102003.pdf>.
Apoio Fome Zero. Prêmio Gestor Eficiente da Merenda Escolar. [acesso 2005 ago 19]. Disponível em: <http://www.apoiofomezero.org.br/site/index.asp?Fuseaction=Conteudo&ParentID=45&Menu=45&Materia=212>.
Mazariegos M, Hambidge KM, Krebs NF, Westcott JE, Lei S, Grunwald GK, et al. Zinc absorption in Guatemalan schoolchildren fed normal or low-phytate maize. Am J Clin Nutr. 2006; 83(1): 59-64.
Hambidge KM, Krebs NF, Westcott JL, Sian L, Miller LV, Peterson KL, et al. Absorption of calcium from tortilla meals prepared from low-phytate maize. Am J Clin Nutr. 2005; 82(1):84-7.
Davies NT, Olpin SE. Studies on the phytate: zinc molar contents in diets as a determinant of Zn availability to young rats. Br J Nutr. 1979; 41: 591-603.
Fordyce EJ, Forbes RM, Robbins KR, Erdman JW Jr. Phytate x calcium/zinc molar ratios: are they predictive of zinc bioavailability? J Food Sci. 1987; 52:440-4.
Broadhead RL, Gibson RS, Hambidge KM, Hotz C, Krebs NF, Manary MJ, et al. Zinc homeostasis in Malawian children consuming a high-phytate, maize-based diet. Am J Clin Nutr. 2002; 75(6): 1057-61.
Ferguson EL, Gibson RS, Opare-Obisaw C, Ounpuu S, Thompson LU, Lehrfeld J. The zinc nutriture of preschool children living in two African countries. J Nutr. 1993; 123(9):1487-96.
Gibson RS, Vanderkooy S, Thompson L. Dietary phytate x calcium/zinc millimolar ratios and zinc nutriture in some Ontario preschool children. Biol Trace Elem Res. 1991; 30(1):87-94.
Haraldsson AK, Veide J, Andlid T, Alminger ML, Sandberg AS. Degradation of phytate by high-phytase Saccharomyces cerevisiae strains during simulated gastrointestinal digestion. J Agric Food Chem. 2005; 53(13):5438-44.
Institute of Medicine. National Academy of Sciences on Dietary Reference Intakes (DRI). Dietary reference intakes: applications in dietary assessment. Washington (DC): National Academy Press; 2001.
Institute of Medicine. National Academy of Sciences on Dietary Reference Intakes (DRI). Dietary reference intakes for calcium, phosphorus, magnesium, vitamin D, and fluoride. Washington (DC): National Academy Press; 1999.
Institute of Medicine. National Academy of Sciences on Dietary Reference Intakes (DRI). Dietary reference intakes for energy, carbohydrate, fiber, fat, fatty acids, cholesterol, protein, and amino acids (macronutrients) pre-publication. Washington (DC): National Academy Press; 2002.
Institute of Medicine. National Academy of Sciences on Dietary Reference Intakes (DRI). Dietary reference intakes for vitamin A, vitamin K, arsenic, boron, chromium, copper, iodine, iron, manganese, molybdenum, nickel, silicon, vanadium, and zinc. Washington (DC): National Academy Press; 2002.
Adams CL, Dorsch JA, Hambidge M, Krebs NF, Raboy V, Sian L, et al. Zinc absorption from a low-phytic acid maize. Am J Clin Nutr. 2002; 76(3):556-9.
Cardoso SP, Martins C. Interações droga-nutriente. Curitiba: NutroClínica; 1998.
Hulthén LR, Larsson M, Sandberg AS, Sandstrom B. Improved zinc and iron absorption from breakfast meals containing malted oats with reduced phytate content. Br J Nutr. 1996; 76: 677-88.
Oberleas D, Harland BE. Phytate content of foods: effect on dietary zinc bioavailability. J Am Diet Assoc. 1981; 79:433-6.
Liddell J, Lockie GM, Wise A. Dietary intakes of phytate and its meal distribution pattern amongst staff and students in an institution of higher education. Br J Nutr. 1987; 58(3):337-46.
Gibson RS, Yeudall F, Drost N, Mtitimuni BM, Cullinan TR. Experiences of a community-based dietary intervention to enhance micronutrient adequacy of diets low in animal source foods and high in phytate: a case study in rural Malawian children. J Nutr. 2003; 133(11 Suppl 2):3992S-9S.
Bwibo NO, Neumann CG. The need for animal source foods by Kenyan children. J Nutr. 2003; 133(11 Suppl 2):3936S-40S.
Krebs NF. Bioavailability of dietary supplements and impact of physiologic state: infants, children and adolescents. J Nutr. 2001; 131(suppl 4):1351-54.
Tereso MJA, Vianna RPT. O Programa de Merenda Escolar de Campinas: análise do alcance e limitações do abastecimento regional. Rev Nutr. 2000; 13(1):41-9.
Mazzilli RN. Merenda no dia alimentar de crianças matriculadas em centros de educação e alimentação do pré-escolar. Rev Saúde Pública. 1987; 21(4):317-25.
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