Stability of β-carotene during baking of orange-fleshed sweet potato-wheat composite bread and estimated contribution to vitamin A requirements.
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.
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.
Madjaliwa
M
Nzamwita
Department of Food Science, Institute for Food, Nutrition and Well-being, University of Pretoria, Private Bag X20, Hatfield, Pretoria 0028, South Africa. Electronic address: gyebi.duodu@up.ac.za.
Kwaku Gyebi
KG
Duodu
Department of Food Science, Institute for Food, Nutrition and Well-being, University of Pretoria, Private Bag X20, Hatfield, Pretoria 0028, South Africa.
Amanda
A
Minnaar
D001939:Bread / Q000032:analysis*; D002648:Child; D003296:Cooking; D005260:Female; D006801:Humans; D027723:Ipomoea batatas / Q000737:chemistry*; D011247:Pregnancy; D014908:Triticum / Q000737:chemistry*; D014801:Vitamin A / Q000378:metabolism*; D014802:Vitamin A Deficiency / Q000378:metabolism*; D019207:beta Carotene / Q000737:chemistry*
D019207:beta Carotene; D014801:Vitamin A
All-trans-β-carotene; Orange-fleshed sweet potato; Recommended dietary allowance; Retention; Wheat bread