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  • Title: Dietary molar ratios of phytate:zinc and millimolar ratios of phytate x calcium:zinc in South Koreans.
    Author: Kwun IS, Kwon CS.
    Journal: Biol Trace Elem Res; 2000; 75(1-3):29-41. PubMed ID: 11051594.
    Abstract:
    The zinc nutritional status in south Koreans was established by evaluation of zinc, calcium and phytate intakes, the molar ratio of phytate:zinc, and the millimolar ratio of phytate x calcium:zinc. The intakes of iron and magnesium were also estimated. Sampling was designed so that it was representative of the national population. Two-day food records were used for the calculation of nutrient intakes, using food consumption data from the 1995 National Nutrition Survey ('95NNS) for South Korea. Daily intakes of zinc and calcium were estimated to be 10.1 mg/d and 426.5 mg/d, respectively, and those of iron and magnesium were 15.2 mg/d and 268.0 mg/d, respectively. The estimated daily phytate intake was 1676.6 mg/d. The ratio of phytate:zinc was 15.9 mol/d and that of phytate x calcium:zinc was 168.9 mmol/d. The ratio in millimoles per 4.2 MJ (1000 kcal) of phytate x calcium:zinc was 91.8. The major food groups for zinc intake were meat, poultry and their products (43%), and cereals and grain products (18%). Sixty-two percent of zinc was from animal food sources. Cereal and grain products supplied most of the phytate intake (46%) followed by seasonings, fruits, and legumes and their products. The major food source of phytate was rice (39%). The results of the study raise concern about the suboptimal zinc status in relation to the Western diet.
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