Effect of boiling on texture of scallop adductor muscles and its mechanism based on label-free quantitative proteomic technique.

Food Chem

National Engineering Research Center of Seafood, Dalian 116034, People's Republic of China; School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, People's Republic of China. Electronic address:

Published: July 2023

The mechanism behind textural changes in scallop adductor muscle during boiling was investigated through proteomic analysis, determination of water holding capacity (WHC) and oxidative indices, as well as observation with scanning electron microscopy and multiphoton nonlinear optical microscopy. The hardness and shear force showed the trend of first rising and then falling in 45 min-boiling time. The results suggested that short-time boiling caused the oxidation, denaturation and aggregation of proteins, resulting in the transverse contraction of myofibers and lateral cross-linked aggregation of muscle fibers and a rise in WHC, which led to the increase in hardness and shear force. While long-time boiling caused the progressive degradation of structural proteins such as fibrillin-1, collagen alpha-2(I) chain, myosin heavy chain, basement membrane-specific heparan sulfate proteoglycan core protein, and paramyosin, resulting in a loose myofibril network and the decrease in WHC, which led to the decrease in hardness and shear force.

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http://dx.doi.org/10.1016/j.foodchem.2023.135723DOI Listing

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