Gu X, Yin S, Xu Q, Gao X, Guangwen T, Russell R M
Shandong Taishan Medical College, Taian City 271000, China.
Wei Sheng Yan Jiu. 1999 Jul;28(4):224-6.
Vitamin A (VA) deficiency is still an important nutritional problem in our country. In order to determine whether plant carotenoids ingestion can improve VA nutrition, a study by using yellow and dark green vegetables was conducted in two classes of a kindergarten for ten weeks in September through December in 1996. The VA nutritional status was marginal to adequate among 41 children (5.3-6.6 year-old), and serum retinols in 39% of these children were below 0.30 mg/L. Each child in class A was provided with about 238 g/d of green and yellow vegetables (spinach, Chinese chive, carrots, and red yams) and 34 g/d of light colored vegetables (cabbage, Chinese cabbage, potato, cucumber, turnip and winter melon). Each child in class B consumed the usual diet with only 56 g/d of green and yellow vegetables and 193 g/d of light colored vegetables. Serum retinol concentration collected before and after the intervention were used to assess VA nutritional status. The results showed that vitamin A nutrition was improved by increasing the intake of green and yellow vegetables. Serum retinol was sustained in the group fed green and yellow vegetables and decreased in the group fed light colored vegetables. Thus, dietary green and yellow vegetables could provide adequate VA nutrition in these children.
维生素A（VA）缺乏在我国仍然是一个重要的营养问题。为了确定摄入植物类胡萝卜素是否能改善VA营养状况，1996年9月至12月，在一所幼儿园的两个班级开展了一项为期十周的研究，研究中使用了黄色和深绿色蔬菜。41名儿童（5.3 - 6.6岁）的VA营养状况处于边缘充足水平，其中39%的儿童血清视黄醇低于0.30mg/L。A班的每个儿童每天提供约238克的绿色和黄色蔬菜（菠菜、韭菜、胡萝卜和红薯）以及34克浅色蔬菜（卷心菜、大白菜、土豆、黄瓜、萝卜和冬瓜）。B班的每个儿童食用常规饮食，每天仅摄入56克绿色和黄色蔬菜以及193克浅色蔬菜。通过干预前后采集的血清视黄醇浓度来评估VA营养状况。结果表明，增加绿色和黄色蔬菜的摄入量可改善维生素A营养状况。食用绿色和黄色蔬菜组的血清视黄醇水平保持稳定，而食用浅色蔬菜组的血清视黄醇水平下降。因此，食用绿色和黄色蔬菜可为这些儿童提供充足的VA营养。
