期刊
CYTA-JOURNAL OF FOOD
卷 21, 期 1, 页码 625-633出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/19476337.2023.2264900
关键词
Atmospheric pressure plasma jet; myofibrillar protein; Siniperca chuatsi; physicochemical properties; conformational properties
The treatment of myofibrillar protein with atmospheric pressure plasma jet (APPJ) can alter its solubility, surface properties, and structure. The study found that APPJ treatment can enhance protein cross-linking, modify tertiary structure, and improve functional characteristics of the protein.
The effects of atmospheric pressure plasma jet (APPJ) treatment on the physicochemical and conformational properties of myofibrillar protein (MP) isolated from mandarin fish. The findings revealed that after exposing MP to APPJ for 0-12 s, there was a significant (P < .05) decline in the solubility and total sulfhydryl concentration. Turbidity and surface hydrophobicity increased significantly, while pH value decreased significantly at first but then stabilized. Gel electrophoresis confirmed that the extracted protein was unaffected. FTIR spectroscopy indicated that the APPJ treatment caused slight changes in secondary structure. However, the UV absorption spectral and intrinsic tryptophan fluorescence demonstrated that the tertiary structure of MP was altered following APPJ treatment. According to the rheological characteristics, APPJ treatment could improve protein cross-linking, raise storage modulus, and promote the development of protein gel network structure. These findings demonstrated that APPJ treatment might improve the functional characteristics of MP isolated from mandarin fish. [GRAPHICS] .
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