Abstract
Abstract Edible insects have been important sources of food proteins for human consumption and animal feed. In this study, a protein isolate from Pterophylla beltrani Bolivar & Bolivar, 1942 (Orthoptera: Tettigoniidae) was enzymatically processed and its nutraceutical properties were evaluated. Protein isolates were obtained from an insect flour and then was hydrolyzed for 5 h with a sequential process using pepsin and trypsin-chymotrypsin to simulate the gastric intestinal fluids. To evaluate the effect of peptide molecular size on nutraceutical properties, the peptides obtained from Total hydrolyzed (TH) were fractionated by ultrafiltration (UF) with 10 kDa and 3 kDa UF membranes giving fractions (F) with different molecular size (F 10KDa). The inhibition assay of Angiotensin-Converting Enzyme (ACE) showed that the best treatment (P 10KDa and F 0.05) was found between the TH and F
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