Effect of sodium starch octenyl succinate-based Pickering emulsion on the physicochemical properties of hairtail myofibrillar protein gel subjected to multiple freeze-thaw cycles
Huinan Wang, Jiaxin Zhang, Xinran Liu, Jinxiang Wang, Xuepeng Li, Jianrong Li
Food Science and Human Wellness
Abstract
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 (<i>P</i> < 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%, the <i>α</i>-helix content decreased by 10.37%, while the <i>β</i>-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.
Extracted Claims
5 claims extracted from this paper into the knowledge graph
Pickering emulsion promoted 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
“Meanwhile, Raman spectral analysis demonstrated that Pickering emulsion promoted the transformation of secondary structure, enhanced hydrogen bonds and hydrophobic interactions, and promoted the trans...”
2% Pickering emulsion increased <i>β</i>-sheet content by 7.94%
“At an emulsion concentration of 2%, the <i>α</i>-helix content decreased by 10.37%, while the <i>β</i>-sheet content increased by 7.94%, compared to the control.”
1%-2% Pickering emulsion reduced quality degradation of MPGs after F-T cycles
“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 wit...”