The effects of Lycium barbarum water extract and fish collagen on milk proteolysis and in vitro angiotensin I-converting enzyme inhibitory activity of yogurt

Document Type

Article

Publication Date

4-1-2021

Abstract

Plain and Lycium barbarum yogurt were made in the presence and absence of fish collagen. Yogurt samples were analyzed for acidification, milk protein proteolysis, angiotensin I-converting enzyme (ACE) inhibitory activity, and sensory evaluation during refrigerated storage for up to 21 days. The o-phthaldialdehyde peptides amount of L. barbarum yogurt both in the presence and absence of fish collagen were significantly increased during 14 days of storage. SDS-PAGE showed improvement in whey proteins degradation of L. barbarum yogurt with/without fish collagen after 3 weeks of storage. L. barbarum yogurt in absence of fish collagen was acting as a great ACE inhibitor reached up to 85% on day 7 of storage. The incorporation of L. barbarum and/or fish collagen affected to a small extent the overall sensory characteristics of yogurt. Yogurt supplemented with L. barbarum and/or fish collagen may lead to the improvement in the production and formulation of yogurt differing in their anti-ACE activity.

Keywords

Yogurt, Lycium barbarum, Proteolysis, Fish collagen, ACE inhibitory activity

Publication Title

Biotechnology and Applied Biochemistry

Divisions

InstituteofBiologicalSciences

Funders

Deanship of Scientific Research (DSR), King Abdulaziz University, Jeddah (D-047-247-1441),DSR

Volume

68

Issue

2

Publisher

Wiley

Publisher Location

111 RIVER ST, HOBOKEN 07030-5774, NJ USA

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