数字农科院2.0

pH-shifting treatment improved the emulsifying ability of gelatin under low-energy emulsification

文献类型： 外文期刊

作者： Xiu ning Yao;Rui ling Dong;Yu cong Li;Ao jing Lv;Li ting Zeng;Xue qing Li;Zhou Lin;Jun Qi;Chun hui Zhang;Guo yuan Xiong;Qing yong Zhang

作者机构：

关键词： Gelatin;Interfacial protein loading;Low-energy emulsification;pH-shifting;Protein structure

期刊名称： International Journal of Biological Macromolecules

ISSN： 0141-8130

年卷期： 2024 年 282 卷

页码：

收录情况： SCIE（2024版） ; ; EI（2024版）

摘要： The effects of pH-shifting treatments (pH 3, 5, 7, 9, and 11) on the stability of gelatin emulsions made by low-energy stirring were investigated. pH-shifting treatments significantly enhanced the ESI and EAI of the emulsion (P < 0.05) and reduced its particle size (P < 0.05) under low-energy emulsifying conditions. The pH11–7 shifting treatment significantly increased the degree of depolymerization and the level of ordered structure of gelatin (P < 0.05). These transformations resulted in a significant increase in the exposure of hydrophobic and negatively charged residues (P < 0.05) on the surface of gelatin, facilitating a faster adsorption rate of gelatin onto the oil-water interface as well as an increase in the amount of gelatin adsorbed at the interface. Moreover, the alkali-shifting treatment promoted the formation of a thin viscoelastic interfacial film, which contributed to the enhanced stability of the emulsion.

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