文献类型： 外文期刊
作者： Liu, Fenglan 1 ; Wang, Xianchang 2 ; Zhao, Xiaoyan 2 ; Hu, Haifang 1 ; Chen, Fengliang 2 ; Sun, Yali 1 ;
作者机构： 1.Xinjiang Acad Forestry Sci, Inst Econ Forest Res, Urumqi 830063, Peoples R China
2.Shandong Acad Agr Sci, Inst Agrofood Sci & Technol, Jinan 250100, Peoples R China
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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