| Autor: |
Abbas Bazata, Yusuf, Richard, Fuchs, Linda, Nicolaides |
| Rok vydání: |
2014 |
| Předmět: |
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| Zdroj: |
Journal of the science of food and agriculture. 96(7) |
| ISSN: |
1097-0010 |
| Popis: |
The aim of the work was to study the effect of traditional processing methods on the β-carotene, ascorbic acid and trypsin inhibitor contents of orange-fleshed sweet potato amala. The most common sweet potato in Nigeria is white or yellow fleshed, which is very low in provitamin A. However, efforts are underway to promote orange-fleshed sweet potato to improve provitamin A intake. This paper describes how orange-fleshed sweet potato slices were traditionally processed into amala, which is increasingly consumed in Nigeria.The study revealed that both the cold and hot fermentation methods resulted in increased vitamin A levels and lower vitamin C levels in orange-fleshed sweet potato. Further processing to make amala resulted in a fall in both vitamin A and C content. The study found an increase in trypsin inhibitor activity following the cold-water fermentation and a decrease following the hot-water fermentation compared to raw orange-fleshed sweet potato. Trypsin inhibitor activity in amala produced using both the cold and hot methods was below detectable levels.The results indicate that amala produced from traditionally fermented orange-fleshed sweet potato could be a good source of vitamins A and C for the rural poor and that the processing removes any potential negative effects of trypsin inhibitors. © 2015 Society of Chemical Industry. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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