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Foaming and interfacial properties of desalted duck egg white nanogels after weak enzymatical hydrolyzation

文献类型： 外文期刊

作者： Zhou, Bin 1 ; Zhao, Jingyun 1 ; Rong, Yujuan 1 ; Li, Mengchen 1 ; Liang, Hongshan 2 ; Li, Bin 2 ; Sun, Jing 4 ;

作者机构： 1.Hubei Univ Technol, Natl Ctr Cellular Regulat & Mol Pharmaceut 111, Sch Biol Engn & Food, Key Lab Fermentat Engn,Hubei Key Lab Ind Microbiol, Wuhan, Peoples R China

2.Huazhong Agr Univ, Coll Food Sci & Technol, Wuhan 430070, Peoples R China

3.Huazhong Agr Univ, Key Lab Environm Correlat Dietol, Minist Educ, Wuhan, Peoples R China

4.Hubei Acad Agr Sci, Inst Anim Husb & Vet Med, Wuhan, Peoples R China

关键词： Desalted duck egg white nanogels; Enzymatic hydrolysis; Foamability; Interfacial properties

期刊名称：FOOD HYDROCOLLOIDS （ 2022影响因子：10.7； 五年影响因子：10.9 ）

ISSN： 0268-005X

年卷期： 2023 年 134 卷

页码：

收录情况： SCI

摘要： Gel-assisted desalination is an efficient way of desalting salted duck egg whites, but results in severe loss of egg white functional properties, especially foaming properties. Here, slightly enzymatical hydrolyzation was used as a promising method to improve the interfacial properties of desalted duck egg white nanogels (DEWN). After partial hydrolysis (ranging from 2.27% to 4.22%), the foaming capability (FC) of the mixture could reach more than 200%, much higher than that of unhydrolyzed DEWN (about 30%). After separated examination, such improve FC was dominantly attributed to the supernatant, which also impacted enhanced foaming stability (FS). The adsorption of the supernatant and the resulting surface rheological measurements exhibited that the extension of the hydrolysis time can increase the diffusion and adsorption rate to the interface, performing high elasticity. Specially, the Lissajous curves displayed that the samples with short enzymolysis time first appeared asymmetric shape, indicating that extending enzymolysis time could improve the elasticity of the interface, which contributed to the improvement in foaming properties. As in a wide range of pH values, the FC and FS of the supernatant performed well, especially exhibited excellent FS at pH 5.0. In general, pepsin hydrolysis treatment, as an oversimplified and green modification strategy could significantly improve the foaming per-formance of DEWN, and solve the problem of loss in its foamability of salted duck egg whites obtained after desalination treatment.

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