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对昆明市三所幼儿园的227名儿童进行了膳食调查,平均每人每日摄入热量1448千卡,达供给量标准的94％;硫胺素1.04mg,达108％;核黄素0.56mg,达供给量标准的58％。对89名儿童进行体检,未发现明显的营养缺乏症状。给91名(男44,女47)儿童口服维生素B_1和B_2各2.5mg,收集四小时尿样进行测定。维生素B_1排出量男性最大值为510微克,最小41微克,女性分别为536和17微克。经
A total of 227 children in three kindergartens in Kunming were enrolled in the diet survey. The average caloric intake per person per day was 1,448 kcal, reaching 94% of the supply standard; thiamine 1.04 mg, up to 108%; riboflavin 0.56 mg , Up to 58% of the supply standards. 89 children were physically examined and found no apparent nutritional deficiencies. Ninety-one (44 males and 47 females) children were orally administered 2.5 mg of vitamin B_1 and B_2, respectively, and four-hour urine samples were collected for determination. Vitamin B 1 excretion of male maximum 510 micrograms, the smallest 41 micrograms, women were 536 and 17 micrograms. through