Effect of steam explosion treatments on the functional properties and structure of camellia (Camellia oleifera Abel.) seed cake protein

文献类型： 外文期刊

第一作者： Zhang, Shanying

作者： Zhang, Shanying;Zheng, Lili;Zheng, Xiaoyan;Ai, Binling;Yang, Yang;Sheng, Zhanwu;Zhang, Shanying;Pan, Yonggui

作者机构：

关键词： Steam explosion; Camellia seed cake protein; Functional properties; Structural properties

期刊名称：FOOD HYDROCOLLOIDS （ 影响因子：9.147； 五年影响因子：9.169 ）

ISSN： 0268-005X

年卷期： 2019 年 93 卷

页码：

收录情况： SCI

摘要： The effect of steam explosion on the functional properties of camellia seed protein (CSP) was investigated, and the structural properties after the modified treatment were evaluated by fourier transform infrared spectroscopy (FTIR), near-UV circular dichroism (CD), thermogravimetric (TG), differential scanning calorimeter (DSC), glycosylation fluorescence, zeta potential (zeta) measurement and particle size measurement. After the steam explosion treatment, the content of simple sugars and free amino acids in the camellia seed cake (CSC) decreased, and the lightness of the CSP was reduced. The result showed that the solubility of treated CSP was significantly higher than those of untreated CSP in different pHs. The foaming and emulsifying properties of the treated CSP were higher than that of native CSP. Moreover, FTIR and DSC indicated a small change in the protein secondary structure after steam explosion, with a decrease in alpha-helix, random coil, beta-turn contents and an increase in beta-sheet content, the change of CSP tertiary structure has been confirmed by near-UV CD. In addition, steam explosion reduced the particle size and the zeta potential. Changes in protein glycosylation indicated Maillard reaction has been activated during steam explosion. These results concluded that CSP can be treated by steam explosion to modify the functional properties.

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