Abstract
The objective of this study was to evaluate the impact of germination on dietary fiber composition, starch availability and physicochemical properties in four non-conventional legumes (Vigna unguiculata, Canavalia ensiformis, Stizolobium niveum, Lablab purpureus) in order to improve the carbohydrate supply and to optimize native products of developing countries. Germination promoted a significant decrease of resistant starch along with an increase of available starch percentage. Total dietary fiber contents increased during germination and improved insoluble/soluble dietary fiber ratio. This process produced an increase of total sugar content, mainly due to the rise of cellulosic glucose from metabolic reaction undergone during germination. Moreover, physicochemical properties of germinated legume flours were modified, improving oil holding, water holding, water absorption and gelation capacities, whereas decreases of emulsifying and foaming capacities were detected. In conclusion, germination provides non-conventional legume flours with higher nutritional quality and better physicochemical properties than the raw flours.
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