Nagoya City School of Nutrition, Mizuho-ku, Nagoya.
Environ Health Prev Med. 2002 Sep;7(4):156-61. doi: 10.1007/BF02897944.
To assess intake of folate/folic acid and food sources in Japanese female dietitians.
We evaluated folate consumption based on four season 7 consecutive day weighed diet records (WDRs) provided by 80 Japanese female dietitians and compared the results with data from a national survey. We then selected informative foods for folate intake on the basis of 2,240 WDRs according to contribution and multiple regression analyses.
Daily folate consumption (mean±SD) among Japanese dietitians was 413±158 μg from raw foods and 343±128 μg from cooked foods. Average residual rate after cooking was 84±8%. Folate intake in summer was lower than that in other seasons by analysis of variance. According to contribution and multiple regression analyses, the major contributors were vegetables, fruit and green tea.
Daily folate intake among Japanese female dietitians was far greater than the 200 μg recommended daily allowance for the Japanese. Irrespective of selection methods and raw/cooked foods, major folate sources were found to be green tea along with vegetables and fruit.
评估日本女性营养师的叶酸/叶酸摄入量和食物来源。
我们根据 80 名日本女性营养师提供的四个季节连续 7 天的称重饮食记录（WDR）评估叶酸摄入量，并将结果与全国调查数据进行比较。然后，我们根据贡献和多元回归分析，从 2240 份 WDR 中选择信息丰富的叶酸摄入食物。
日本营养师从生食中获得的叶酸日摄入量（平均值±标准差）为 413±158μg，从熟食中获得的叶酸日摄入量为 343±128μg。烹饪后的平均残留率为 84±8%。方差分析显示，夏季叶酸摄入量低于其他季节。根据贡献和多元回归分析，主要来源是蔬菜、水果和绿茶。
日本女性营养师的叶酸日摄入量远远超过日本推荐的每日 200μg 摄入量。无论采用何种选择方法和生食/熟食，绿茶以及蔬菜和水果都是主要的叶酸来源。
