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High temperature curing softening salted egg yolk: Insights on microstructure, texture properties and composition of key protein

文献类型： 外文期刊

作者： Sun, Jing 1 ; Wu, Yan 1 ; Zeng, Qi 1 ; Lu, Lizhi 2 ; Zeng, Tao 2 ; Harlina, Putri Widyanti 3 ; Liu, Wenhao 1 ; Du, Jinping 1 ; Pi, Jinsong 1 ; Yang, Fang 4 ;

作者机构： 1.Hubei Acad Agr Sci, Inst Anim Husb & Vetervinary, Hubei Innovat Ctr Agr Sci & Technoloey, Hubei Key Lab Anim Embryo Technol & Mol Breeding, Wuhan 430064, Peoples R China

2.Zhejiang Acad Agr Sci, Hangzhou 310021, Peoples R China

3.Univ Padjadjaran, Fac Agroind Technol, Dept Food Ind Technol, Bandung 45363, Indonesia

4.Hubei Univ Chinese Med, Sch Lab Med, Wuhan 430065, Peoples R China

关键词： Proteomics; Lipoprotein; Rheological property; Aggregation; Protein oxidation

期刊名称：LWT-FOOD SCIENCE AND TECHNOLOGY （ 影响因子：6.0； 五年影响因子：6.0 ）

ISSN： 0023-6438

年卷期： 2024 年 201 卷

页码：

收录情况： SCI

摘要： Salted egg is made by brining eggs in saturated saline for 30 days. However, producers usually increase the curing temperature of salted eggs from 20 degrees C to 45 degrees C to shorten the production cycle by nearly 50%, leading to the increase in the probability of softening salted egg yolk with a declined edible and processing quality. To elucidate the softening mechanism, this study compared the microstructure, texture properties, and composition of key proteins in non -softening salted egg yolk cured at 20 degrees C (NSSEY) and softening salted egg yolk cured at 45 degrees C (SSEY). The results showed that SSEY exhibited a higher carbonyl content, a lower free sulfhydryl content, a weaker intermolecular potential, and a smaller size of aggregates, as well as a loose network composed of numerous spheroidal nanoparticles connected in series. Salting with higher temperature also significantly decreased the water holding and protein -lipid binding capacity, with the release of more oil droplets and water. Quantitative proteomics analysis revealed an obvious decrease in the content of apolipoproteins from highdensity lipoprotein (HDL) in SSEY, indicating that HDL may play a key role in the formation of SSEY.

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