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. 2020 Oct 14;13(10):308. doi: 10.3390/ph13100308

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© 2020 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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(A) DPP-IV inhibitory activity with soft shelled turtle yolk (SSTY) hydrolysates by trypsin, pepsin, α-chymotrypsin, and GI (pepsin, trypsin and α-chymotrypsin) enzyme, respectively. Different letters (a–f) indicate significant differences between samples (p < 0.05). (B) SDS-PAGE analysis of SSTY protein (Lane 1), trypsin digest (Lane 2), pepsin digest (Lane 3), α-chymotrypsin digest (Lane 4), thermolysin digest (Lane 5), and GI hydrolysate (Lane 6) of SSTY proteins at concentration 50 µg/µL. M represents the molecular weight of the protein markers.