Abstract
The study aimed to determine the potential anti-diabetic activities of the hydrolysates of camel milk proteins (CMPH). Camel milk proteins were hydrolyzed independently by using 11 proteases, and their anti-diabetic activities were analyzed by in vitro, and in vivo. The results showed that CMPH-Flavourzyme exhibited the best α-glucosidase and dipeptidyl peptidase-IV inhibitory activity, while CMPH-Papain exhibited the highest α-amylase inhibitory activity, and best proliferative effect on streptozotocin-induced NIT-1 cells in vitro. Furthermore, CMPH-Papain exhibited the most effect in decreasing the serum levels of fasting blood glucose, oral glucose tolerance test, pro-inflammatory factors (IL-1β, IL-6) and triglyceride, as well as increasing insulin levels on in vivo streptozotocin-induced diabetic mice. Peptides identification followed with molecular docking and network pharmacology analysis also found the potential anti-diabetic peptides from CMPH-Flavourzyme and CMPH-Papain. Our results indicated the type of protease used for the treatment significantly influences the anti-diabetic activities of the resulting CMPH.
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