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SPI/SA microgels prepared by phase separation improved the water retention and sensory perception of low-salt pork gels

文献类型： 外文期刊

作者： Yu, Rikuan 1 ; Zheng, Meixia 1 ; Zhou, Fuzhen 1 ; Hou, Guohua 1 ; Zou, Zhongai 4 ; Miao, Song 3 ; Zhang, Longtao 1 ; Zheng, Baodong 1 ;

作者机构： 1.Fujian Agr & Forestry Univ, Coll Food Sci, Fuzhou 350002, Peoples R China

2.Inst Crop Sci, Fujian Acad Agr Sci, Fujian Germplasm Resources Ctr, Fuzhou 350013, Peoples R China

3.China Ireland Int Cooperat Ctr Food Mat Sci & Stru, Fuzhou 350002, Peoples R China

4.Xiamen Huaxia Univ, Coll Environm & Publ Hlth, Xiamen, Fujian, Peoples R China

5.State Key Lab Food Safety Technol Meat Prod, Xiamen 361100, Peoples R China

6.Teagasc Food Res Ctr, Moorepark, Cork P61C996, Ireland

关键词： Soy protein isolate; Sodium alginate; Phase separation; Microgel; Low-salt pork gels

期刊名称：FOOD HYDROCOLLOIDS （ 影响因子：11.0； 五年影响因子：11.3 ）

ISSN： 0268-005X

年卷期： 2024 年 156 卷

页码：

收录情况： SCI

摘要： The SPI/SA microgels was prepared using protein-polysaccharide phase separation technology. The morphology, secondary structure, rheological properties and physical properties of the SPI/SA microgels were characterized and evaluated. SPI/SA microgels were added to low-salt pork gels to evaluate their effect on water retention and mechanical properties. The results indicated that the phase separation of SA and SPI in the mixed solution facilitated the formation of a SPI-rich region, reaching the gelation concentration. Upon heating, the hydrophobic groups in the SPI folded inward, resulting in a decrease in alpha-helix content and an increase in beta-sheet content. This led to the formation of SPI/SA microgels with specific storage modulus and swelling properties. The microgels exhibited a uniform particle size, which could be precisely controlled by adjusting the concentrations of SPI and SA or the heating temperature. The addition of SPI/SA microgels improved sensory evaluation and gel strength, increased water holding capacity, and reduced cooking loss of low-salt pork gels. In addition, the SPI/ SA microgels have the ability to convert free water into fixed water that is contained within the structure of the SPI/SA microgels in low-salt pork gel, thereby improving their properties in low-salt pork gels.

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