Influence of ultrasonic treatment on the structure and emulsifying properties of peanut protein isolate

文献类型: 外文期刊

第一作者: Zhang, Qiu-Ting

作者: Zhang, Qiu-Ting;Tu, Zong-Cai;Liu, Cheng-Mei;Shi, Yan;Fan, Liang-Liang;Tu, Zong-Cai;Huang, Xiao-Qin;Xiao, Hui;Wang, Hui;Liu, Guang-Xian;Wang, Hui;Lin, De-Rong

作者机构:

关键词: Ultrasonic treatment;Peanut protein isolate;Emulsifying properties;Structure;Surface hydrophobicity

期刊名称:FOOD AND BIOPRODUCTS PROCESSING ( 影响因子:4.481; 五年影响因子:4.547 )

ISSN: 0960-3085

年卷期: 2014 年 92 卷 C1 期

页码:

收录情况: SCI

摘要: Effects of ultrasonic treatment on emulsifying properties and structure of peanut protein isolate (PPI) were evaluated by analysis of particle size distribution, protein surface hydrophobicity, SDS-PAGE, circular dichroism spectra and environmental scanning electron microscopy. The emulsifying properties of the PPI were found to be improved by ultrasonic treatment. The mean particle size decreased from 474.7 nm to 255.8 nm while the molecular weight remained unaffected. The results of intrinsic fluorescence spectroscopy and surface hydrophobicity indicated that ultrasonic treatment induced tertiary structural changes of the proteins in PPI. Emulsifying activity index and emulsion stability index were found to be correlated fairly well with surface hydrophobicity (H-0) (r = 0.712 and r = 0.668, respectively). Crown Copyright (C) 2013 Published by Elsevier B.V. on behalf of The Institution of Chemical Engineers. All rights reserved.

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