Combined treatment of lactic acid-ultrasound-papain on yak meat and its tenderization mechanism

In order to study the tenderness mechanism of difference in different parts of Yak meat, the differentially expressed proteins (DEPs) and its correlation with quality of Yak meat were studied by TMT (Tandem Mass Tags, TMT) quantitative proteomic method. The results showed that 25, 40 and 34 DEPs were identified in JR/HGT, WJR/HGT and WJR/JR groups, respectively. Correlation analysis between DEPs and quality traits of yak meat showed that there were 12 DEPs with significant correlation were correlated closely with quality traits.The relative contents of the 11 DEPs were significantly different in different parts (p < 0.05).There are 8, 9 and 6 key DEPs in JR/HGT, WJR/HGT and WJR/JR groups, respectively.The expression of these DEPs were down-regulated and up-regulated in different parts, and was closely related to the cell growth and death, carbohydrate metabolism, amino acid metabolism, protein binding, motility activity and unfolded protein binding.The significant difference of the expression of these key proteins in different parts is the internal reason of the difference of quality traits among WJR, JR and HGT.This provide a reference for the study on the mechanism of difference in Yak meat.

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Differential proteomic analysis to identify proteins associated with Tenderness of Yak meat from different parts based on TMT Proteomic

Differences in myofiber characteristics and meat quality of different yak muscles.

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Differences in myofiber characteristics and meat quality of different yak muscles.