Effect of sodium starch octenyl succinate-based Pickering emulsion on the physicochemical properties of hairtail myofibrillar protein gel subjected to multiple freeze-thaw cycles  

作　　者：Huinan Wang Jiaxin Zhang Xinran Liu Jinxiang Wang Xuepeng Li Jianrong Li 

机构地区：[1]Key Laboratory of Food Nutrition and Safety,Ministry of Education,College of Food Science and Engineering,Tianjin University of Science and Technology,Tianjin 300457,China [2]College of Food Science and Technology,Bohai University,National R&D Branch Center of Surimi and Surimi Products Processing,Jinzhou 121013,China

出　　处：《Food Science and Human Wellness》2024年第2期1018-1028,共11页食品科学与人类健康（英文）

基　　金：supported by the National Natural Science Foundation of China(U20A2067,32272360)。

摘　　要：A Pickering emulsion based on sodium starch octenyl succinate(SSOS)was prepared and its effects on the physicochemical properties of hairtail myofibrillar protein gels(MPGs)subjected to multiple freeze-thaw(F-T)cycles were investigated.The whiteness,water-holding capacity,storage modulus(G')and texture properties of the MPGs were significantly improved by adding 1%-2%Pickering emulsion(P<0.05).Meanwhile,Raman spectral analysis demonstrated that Pickering emulsion promoted the transformation of secondary structure,enhanced hydrogen bonds and hydrophobic interactions,and promoted the transition of disulfide bond conformation from g-g-g to g-g-t and t-g-t.At an emulsion concentration of 2%,theα-helix content decreased by 10.37%,while theβ-sheet content increased by 7.94%,compared to the control.After F-T cycles,the structure of the MPGs was destroyed,with an increase in hardness and a decrease in whiteness and water-holding capacity,however,the quality degradation of MPGs was reduced with 1%-2%Pickering emulsion.These findings demonstrated that SSOS-Pickering emulsions,as potential fat substitutes,can enhance the gel properties and the F-T stability of MPGs.

关 键 词：Pickering emulsion Myofibrillar protein Gel properties Freeze-thaw stability Intermolecular interactions 

分 类 号：TS254.1[轻工技术与工程—水产品加工及贮藏工程]