1. Effect of NaCl replacement by other salt mixtures on myofibrillar proteins: Underlining protein structure, gel formation, and chewing properties.
- Author
-
Shi, Haibo, Li, Yongjie, Zheng, Jiabao, Yao, Xianqi, Wang, Wei, Tomasevic, Igor, and Sun, Weizheng
- Subjects
- *
PROTEIN structure , *MASTICATION , *GELATION , *CHLORIDES , *SALT - Abstract
The protein structure, gel changes, and chewing properties of low‐sodium myofibrillar protein (MP) prepared by compound chloride salts (KCl/MgCl2, KCl/CaCl2, and KCl/MgCl2/CaCl2) and different substitution degrees (10%, 25%, and 40%) at same ionic strength (0.6 M) were investigated. The results revealed that the low‐sodium MP gels containing CaCl2 manifested more liquid loss and less moisture content accompanied by obvious morphological shrinkage, while KCl/MgCl2 contributed to the gel juiciness. At high substitution degree of 40%, KCl/CaCl2 substitution rendered the gel with dense structure and highest strength, but worse water retention capacity. Using other compound chloride salts influenced the chewing efficiency, and CaCl2 substitution made the gel relatively hard to chew. The inhomogeneous structure accompanied by cluster blocks in KCl/CaCl2‐substituted MP gel accelerated the overall fracture rate. During heating process, more proteins in CaCl2‐substituted MP did not participate in gel formation, intervening the final gel properties. The chloride salt mixtures containing MgCl2, rather than CaCl2, avoided or alleviated the liquid loss and shrinkage of low‐sodium MP gel within the substitution degree of 10%–40%, and substitution degree not exceeding 25% was more reasonable for the controlled qualities. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF