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How the structure, nutritional and sensory attributes of pasta made from legume flour is affected by the proportion of legume protein

Abstract : In this study, wheat in pasta was partially or completely replaced by faba to increase its protein quantity and improve its quality. Increasing the ratio of faba:wheat protein from 0:100 to 100:0 (g/g) in pasta enlarged its protein network at the microscopic scale and linearly diluted the covalently linked gluten network of wheat pasta by weakly linked proteins. A concomitant linear increase in the cooking loss (up to 2.6 fold), a decrease in resilience (up to 1.4 fold) and an increase of the in-vitro protein digestion (up to 25%) were observed in pasta. The increase in drying temperature (90 °C vs. 55 °C) promoted the covalent aggregation of proteins in all pasta, but was more efficient in legume pasta, enhancing their resilience and reducing their cooking loss, without altering the degree of protein hydrolysis. This was partly explained by the reduction in trypsin inhibitory activity in all legume pasta dried at 90 °C. Interestingly, scores for sensory attributes such as liking attributed to pasta containing 80% faba-protein were close to scores given to a commercial whole wheat pasta. Pasta made exclusively from faba dried at 55 °C or 90 °C tended to be liked more than their commercial gluten-free counterparts.
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Submitted on : Tuesday, September 26, 2017 - 9:59:13 PM
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Karima Laleg, Cécile Barron, Sylvie Cordelle, Pascal Schlich, Stéphane Walrand, et al.. How the structure, nutritional and sensory attributes of pasta made from legume flour is affected by the proportion of legume protein. LWT - Food Science and Technology, Elsevier, 2017, 79, pp.471-478. ⟨10.1016/j.lwt.2017.01.069⟩. ⟨hal-01517226⟩

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