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Impact of Legume Flour Addition on Pasta Structure: Consequences on Its In Vitro Starch Digestibility
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Impact of Legume Flour Addition on Pasta Structure: Consequences on Its In Vitro Starch Digestibility
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Journal Article
Impact of Legume Flour Addition on Pasta Structure: Consequences on Its In Vitro Starch Digestibility
2010
Overview
Pasta is popular for its ease of cooking and its low glycaemic index (GI). This interesting nutritional property can be attributed to its specific compact structure generally described as a protein network entrapping starch granules. Despite this low GI, pasta is poor in fibres and lack some essential amino acids. To enhance its nutritional composition, pasta can be fortified with non-traditional ingredients such as legume flours. The objective of this study was to investigate the impact of legume flour addition on pasta structure and the inherent consequences on the in vitro digestibility of starch. The addition of a high level (35%, w/w) of legume flour, especially split pea flour, induced some minor structural changes in pasta. The inclusion of fibres, the dilution of gluten proteins by albumins and globulins, and the larger amount of thin protein films (in split pea pasta) may have favoured higher susceptibility of starch to digestive enzymes. At the opposite, the presence of some partially gelatinised starch granules in the core of fortified pasta may have favoured the decrease in the in vitro starch digestibility. As a consequence, a high level of legume flour addition in pasta did not have any significant impact on its in vitro starch digestibility. A high level of split pea and faba bean flours can thus be added to pasta to increase its nutritional composition while keeping its low glycaemic index.
Publisher
Boston : Springer US,Springer US,Springer Nature B.V,Springer Verlag (Germany)
Subject
