期刊
LWT-FOOD SCIENCE AND TECHNOLOGY
卷 156, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.lwt.2021.112979
关键词
Myofibrillar protein; Solubility; Rheological property; Structure; PCA
资金
- Natural Science Foundation of Zhejiang Province [LQ20C200011]
- National Key Research Program of China [2018YFD0401203]
- Fundamental Research Funds for the Central Universities [Y0201700416]
- National Natural Science Foundation of China [31871826]
This study focused on evaluating the solubility, rheological property, and structural changes of Myofibrillar Protein (MP) extracted from White Croaker, after altering it using high-intensity ultrasound treatment (HIUT). The study revealed that after 10 minutes of HIUT, the solubility and fluidity of MP were enhanced. Additionally, HIUT was found to disrupt and unfold the structure of MP, inducing various structural changes.
This study was focused on evaluating and performing correlation analysis between the solubility, rheological property, and structural changes of MP (Myofibrillar Protein). The MP was extracted from White Croaker and altered using high-intensity ultrasound treatment (HIUT) (frequency, 20 kHz; power, 500 W; pulse, 3 s on and 3 s off) at different times (0, 2, 4, 6, 8 & 10 min). After 10 min of HIUT, the solubility and fluidity of MPs were enhanced. The HIUT could break the MP aggregates and induce myosin heavy chain (MHC) degradation. Further, HIUT disordered and unfolded MP, induced migrations of surface charge groups, especially the negative charge groups. It also increased the exposure of more charged groups and active chromogenic group residues. The Correlation analysis and Principal Component Analysis (PCA) exhibited a high correlation between the solubility, the zero shear viscosity of MP, and its indexes of structural changes after the HIUT. Our work can provide useful knowledge for the modification of fish MP.
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