Abdel-Kader Z M
Biochemistry and Nutrition Department, Women's College, Ain Shams University, Cairo, Egypt.
Nahrung. 1991;35(7):689-93. doi: 10.1002/food.19910350705.
The mean values of alpha and beta-carotene of 10 fruits and vegetables from supermarkets in Cairo and Alexandria have been determined using HPLC method, and the average vitamin A activities (in retinol equivalents) calculated. Carrots, spinach and sweet potatoes were the best sources of provitamin A activity. Beta-carotene was the more prevalent carotenoid compared with alpha-carotene. An analysis of variance including all foods investigated demonstrated that there were no significant differences among either locations or times of analysis. There was no difference between the analysed values of vitamin A activity and the USDA Handbook No. 8 values.
已使用高效液相色谱法测定了开罗和亚历山大超市中10种水果和蔬菜的α-胡萝卜素和β-胡萝卜素的平均值，并计算了平均维生素A活性（以视黄醇当量计）。胡萝卜、菠菜和红薯是维生素A原活性的最佳来源。与α-胡萝卜素相比，β-胡萝卜素是更普遍的类胡萝卜素。对所有调查食品进行的方差分析表明，分析地点或时间之间没有显著差异。维生素A活性的分析值与美国农业部第8号手册中的值没有差异。
