黄绿色蔬菜改善学龄前儿童Vit A营养的研究

Investigation on vitamin A nutrition status improved by yellow-green vegetables in preschool children

目的：研究增加富含VitA原的黄绿色蔬菜是否能改善儿童的VitA营养状态。方法：2007年9～12月在鹤壁市某幼儿园使用富含类胡萝卜素的蔬菜进行干预试验。选择年龄为5．3—6．5岁的儿童41名，其中39．02％（16名）的儿童血清视黄醇低于0．30mg／L，处于边缘缺乏状态。试验分为两组：对照组，不改变日常膳食，平均每人每日摄人193g浅色蔬菜和56g黄绿色蔬菜；试验组，平均每人每日摄入238g黄绿色蔬菜和34g浅色蔬菜。结果：试验组儿童的平均血清视黄醇浓度比试验前有所升高，而对照组在试验后显著降低，并且显著低于试验组。结论：膳食黄绿色蔬菜对改善儿童的VitA营养有重要影响。

Objective ： To explore the effect of yellow - green vegetables on vitamin A nutrition status. Methods ： From September to December 2007, 41 children aged 5.3 - 6. 5 years old were selected, and 39.02% of them had low serum retinol level （ 〈 0. 30 mg/L）, then they were divided into two groups. Control group： normal diet, the average daily intakes included 193 g of light -colored vegetables and 56 g of yellow - green vegetables ; experimental group ： the average daily intakes included 238 g of yellow - green vegetables and 34 g of light - colored vegetables. Results： In experimental group, the average level of serum retinol increases after intervention, while the level decreases in control group. The average level of serum retinol in control group was lower than that in experimental group. Conclusion： Yellow - green vegetables can improve nutrition status of vitamin A in children.