Surface properties of walnut protein from AOT reverse micelles

文献类型： 外文期刊

第一作者： Liu, Fenglan

作者： Liu, Fenglan;Hu, Haifang;Sun, Yali;Wang, Xianchang;Zhao, Xiaoyan;Chen, Fengliang

作者机构：

关键词： Reverse micelles; scanning electron microscopy; surface properties; walnut protein; X-ray photoelectron spectroscopy

期刊名称：INTERNATIONAL JOURNAL OF FOOD SCIENCE AND TECHNOLOGY （ 影响因子：3.713； 五年影响因子：3.408 ）

ISSN： 0950-5423

年卷期： 2014 年 49 卷 2 期

页码：

收录情况： SCI

摘要： The surface chemical composition and microstructure of walnut protein obtained through aqueous buffer and bis(2-ethylhexyl) sodium sulfosuccinate (AOT) reverse micelles were determined by X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM). The surfaces were characterised by XPS to monitor surface composition. The different components of C 1s, N 1s and O 1s peaks were provided precisely. By comparison with walnut protein surface from aqueous buffer, XPS analysis revealed that the O atomic percentage of walnut protein powder surface from AOT reverse micelles was higher, but the C and N atomic percentages were lower. The N/C ratio of the walnut protein powders using two extraction methods was similar, while significant difference was obtained in the O/N. The obtained results indicated that the reverse micelles could affect the C, O and N components on the surface of walnut protein powder. Protein microstructure after reverse micelle treatment showed many crystals.

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