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采用离子交换法测定分析了87种食物植酸含量,通过对841名成年人的膳食调查对锌的生物利用率进行评估。成年人锌的平均摄入量(男性为9.5 mg,女性为7.5 mg)低于韩国的每日推荐摄入量。谷类(68.6%)和豆类(19.3%)是膳食中植酸的主要来源。植酸与锌的平均比值男性为9.5,女性为10.5。9.6%的被调查者(植酸与锌的摩尔比低于5)锌的生物利用率较高,而13.2%的被调查者(植酸与锌的摩尔比高于15)锌的生物利用率较低。54.3%的被调查者(男性61.8%、女性49.5%)的锌摄入量符合标准。应进一步研究增加锌的摄入量和提高锌的生物利用率,来改善韩国人群体内锌的营养状况。
The phytic acid content of 87 foods was analyzed by ion exchange method. The bioavailability of zinc was evaluated by the dietary survey of 841 adults. The average zinc intake in adults (9.5 mg for men and 7.5 mg for women) is lower than the daily recommended intake for South Korea. Cereals (68.6%) and pulses (19.3%) are the main sources of phytic acid in the diet. The average ratio of phytic acid to zinc was 9.5 for males and 10.5.9.6 for females (molar ratio of phytic acid to zinc was below 5). The bioavailability of zinc was high, while 13.2% of respondents The molar ratio of acid to zinc is higher than 15) The bioavailability of zinc is low. 54.3% of respondents (61.8% of men, 49.5% of women) zinc intake in line with the standards. Should further study to increase zinc intake and improve the bioavailability of zinc to improve the nutritional status of the Korean population zinc.