Nzamwita Madjaliwa, Duodu Kwaku Gyebi, Minnaar Amanda
Department of Food Science, Institute for Food, Nutrition and Well-being, University of Pretoria, Private Bag X20, Hatfield, Pretoria 0028, South Africa; Postharvest and Nutrition Program, Rwanda Agriculture Board, P.O. Box 138, Huye, Rwanda.
Department of Food Science, Institute for Food, Nutrition and Well-being, University of Pretoria, Private Bag X20, Hatfield, Pretoria 0028, South Africa.
Food Chem. 2017 Aug 1;228:85-90. doi: 10.1016/j.foodchem.2017.01.133. Epub 2017 Jan 30.
Orange-fleshed sweet potato (OFSP) is known to be a rich source of β-carotene, a precursor of vitamin A and a potential tool for fighting vitamin A deficiency (VAD) in developing countries. OFSP flour was incorporated into wheat flour at 10, 20 and 30% (w/w) substitution levels. The stability of β-carotene during baking and the contribution of OFSP-wheat composite breads to vitamin A requirements were evaluated. The retention of all-trans-β-carotene in breads containing 10, 20 and 30% OFSP flour was 62.7, 71.4 and 83% respectively, after baking. Breads containing 20% and 30% OFSP flour could be used for the eradication of vitamin A deficiency as they were found to meet 29 and 89.2% (100g portion) respectively, of the recommended dietary allowance (RDA) of vitamin A amongst children aged 3-10years. The latter would meet nearly a half of the RDA of vitamin A for pregnant and lactating women.
橙色果肉红薯（OFSP）是β-胡萝卜素的丰富来源，β-胡萝卜素是维生素A的前体，也是发展中国家对抗维生素A缺乏症（VAD）的潜在工具。OFSP面粉以10%、20%和30%（w/w）的替代水平掺入小麦粉中。评估了烘焙过程中β-胡萝卜素的稳定性以及OFSP-小麦复合面包对维生素A需求的贡献。烘焙后，含有10%、20%和30%OFSP面粉的面包中全反式β-胡萝卜素的保留率分别为62.7%、71.4%和83%。含有20%和30%OFSP面粉的面包可用于消除维生素A缺乏症，因为它们分别满足3至10岁儿童维生素A推荐膳食摄入量（RDA）的29%和89.2%（100克份量）。后者几乎能满足孕妇和哺乳期妇女维生素A RDA的一半。
