Foods 2016, 5(3), 64; https://doi.org/10.3390/foods5030064
Comparison of the Proximate Composition, Total Carotenoids and Total Polyphenol Content of Nine Orange-Fleshed Sweet Potato Varieties Grown in Bangladesh
1
Institute of Nutrition and Food Science, University of Dhaka, Dhaka 1000, Bangladesh
2
Department of Nutritional Sciences, Texas Tech University, Lubbock, Texas 79409, USA
*
Author to whom correspondence should be addressed.
Academic Editor: Anthony Fardet
Received: 12 July 2016 / Revised: 1 September 2016 / Accepted: 8 September 2016 / Published: 14 September 2016
Abstract
In an attempt to develop the food composition table for Bangladesh, the nutritional composition of nine varieties of orange-fleshed sweet potato was analyzed together with total carotenoids (TCC) and total polyphenol content (TPC). Each variety showed significant variation in different nutrient contents. The quantification of the TCC and TPC was done by spectrophotometric measurement, and the proximate composition was done by the AOAC method. The obtained results showed that total polyphenol content varied from 94.63 to 136.05 mg gallic acid equivalent (GAE)/100 g fresh weight. Among the selected sweet potatoes, Bangladesh Agricultural Research Institute (BARI) Sweet Potato 7 (SP7) contained the highest, whereas BARI SP6 contained the lowest amount of total polyphenol content. The obtained results also revealed that total carotenoids content ranged from 0.38 to 7.24 mg/100 g fresh weight. BARI SP8 showed the highest total carotenoids content, whereas BARI SP6 showed the lowest. Total carotenoids content was found to be higher in dark orange-colored flesh varieties than their light-colored counterparts. The results of the study indicated that selected sweet potato varieties are rich in protein and carbohydrate, low in fat, high in polyphenol and carotenoids and, thus, could be a good source of dietary antioxidants to prevent free radical damage, which leads to chronic diseases, and also to prevent vitamin A malnutrition. View Full-TextKeywords:
orange-fleshed sweet potato; nutritional composition; total polyphenol content; total carotenoids content; Bangladesh
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Alam, M.K.; Rana, Z.H.; Islam, S.N. Comparison of the Proximate Composition, Total Carotenoids and Total Polyphenol Content of Nine Orange-Fleshed Sweet Potato Varieties Grown in Bangladesh. Foods 2016, 5, 64.
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