Effect of ice-temperature storage on some properties of salt-soluble proteins and gel from chicken breast muscles | Efecto del almacenamiento a temperatura de hielo en algunas propiedades de las proteínas solubles en sal y del gel de los músculos de la pechuga de pollo
2021
Ji, Hongfang | Hou, Xianzhe | Zhang, Lingwen | Wang, Xuefei | Li, Shasha | Ma, Hanjun | Chen, Fusheng
The changes in physicochemical properties of salt-soluble proteins and gel prepared with chicken breast muscles during −1.5ᵒC (ice-temperature) and 4ᵒC (refrigerated temperature) storage were investigated. Compared with the samples of 4ᵒC stored group, the decrease in solubility, the content of total sulfhydryl and available sulfhydryl groups of SSP from chicken breast muscles at −1.5ᵒC storage was effectively delayed, and the increase of both surface hydrophobicity and content of disulfide bond was obviously inhibited. The gel prepared with −1.5ᵒC stored samples had much higher holding capacity of water, lower cooking loss, better springiness, and more uniform three-dimensional network structures with smaller-sized pores than those from 4°C stored-samples. Additionally, great changes in the proportions of non-flowing water and free water ratio were observed during 4ᵒC storage. In short, the ice-temperature storage used for chicken meat preservation was better than refrigerated storage.
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