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黄绿色蔬菜对儿童血清类胡萝卜素水平的影响

荫士安 谷秀芳 徐青梅 胡善明 赵显峰 高祥 汤光文

摘 要:目的 评价黄绿色蔬菜对血清类胡萝卜素含量及血清类胡萝卜素与血清视黄醇水平的相关性。方法 对山东省泰安市1所日托幼儿园两个班41名(5.3±6.4)岁儿童进行了为期10周的黄绿色蔬菜干预研究,其中1个班(19名)为浅色蔬菜组,不改变日常膳食,平均每日每人摄入193 g浅色蔬菜(圆白菜、大白菜、土豆、黄瓜、菜花和白萝卜等)和56 g黄绿色蔬菜(菠菜、空心菜、胡萝卜和红心红薯等);另1个班(22名)为黄绿色蔬菜组,平均每日每人摄入238 g黄绿色蔬菜和34 g浅色蔬菜。每个儿童分别在实验前后各取1次静脉血,用高效液相色谱法分析儿童血清中视黄醇和类胡萝卜素的浓度。结果 干预后黄绿色蔬菜组血清中类胡萝卜素浓度(包括反式-β-胡萝卜素、顺式-β-胡萝卜素、α-胡萝卜素、隐黄素和叶黄素)显著高于其干预前的水平;而浅色蔬菜组干预后这些组分的水平都显著低于其干预前的水平。血清中β-或α-胡萝卜素与视黄醇浓度呈显著正相关,并且这种相关性冬天大于秋天。结论 富含胡萝卜素的黄绿色蔬菜对儿童的维生素A营养有重要意义。
关键词:维生素A;儿童;类胡萝卜素类;蔬菜

Effect of green and yellow vegetables on serum carotenoid in children

YIN Shi′an, GU Xiufang, XU Qingmei, et al.
Institute of Nutrition and Food Hygiene, Chinese Academy of Preventive Medicine, Beijing 100050, China

Abstract:Objective To assay the effect of green and yellow vegetables on serum carotenoid concentration and its relation to serum retinol level in children. Methods A ten-week green and yellow vegetable intervention study was conducted in children aged 5.3 to 6.4 years of two classes in a kindergarten in Tai′an City of Shandong Province in early September 1996, one class of light-colored vegetable supplemented with daily 193 grams of light colored vegetables, such as cabbage, Chinese cabbage, potato, cucumber, cauliflower and turnip, and 56 grams of yellow-green vegetables, such as spinach, Chinese chive, carrots and red yams; and the other one of yellow-green vegetables with daily 238 grams of yellow-green vegetables and 34 grams of light colored vegetables, both without change in regular diet. Venous blood specimens were collected before and after the experiment from each of the subjects. Serum retinol and carotenoid were determined with high performance liquid chromatography. Results Serum level of carotenoid, including all-trans-β-carotene, cis-β-carotene, cryptoxanthin and lutein were significantly higher after interventi

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