文献类型：期刊文献

英文题名：Role of surfactant in the formation of zein/Tween-20 nanoparticles studied by fluorescence and circular dichroism

作者：Wang, Xiaoyong[1];Chu, Xiangyu[1]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China

年份：2018

卷号：558

起止页码：110

外文期刊名：COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS

收录：;EI(收录号：20183605766211);WOS:【SCI-EXPANDED(收录号:WOS:000447625500014)】；

基金：This work is supported by the National Natural Science Foundation of China (Grant 21573071).

语种：英文

外文关键词：Zein; Tween-20; Nanoparticles; Complexes; Hydrophobic interaction; Steric repulsion

摘要：The formation of zein/Tween-20 nanoparticles through the antisolvent precipitation method at various Tween20 concentrations (CTween-20) has been investigated using dynamic light scattering, surface tension, fluorescence, and circular dichroism. When CTween-20 increases from 0 to 0.2 g/L, the particle sizes of zein/Tween-20 nanoparticles significantly decrease from 140 to 95 nm, followed by nearly constant values of 90-92 nm at CTween-20 0.2-4 g/L. Compared to Tween-20, zein/Tween-20 nanoparticles give smaller values of surface tension at CTween-20 = 0-2.8 g/L, and almost the same values at CTween-20 higher than 2.8 g/L. The values of fluorescence maximum intensity and alpha-helix content of zein molecules in zein/Tween-20 nanoparticles show pronouncedly different changes at CTween-20= 0-0.2, 0.2-2.8, and 2.8-4 g/L. The formation of zein/Tween-20 nanoparticles is proposed to be induced by the aggregation of zein/Tween-20 complexes mainly driven by the hydrophobic force. Zein/Tween-20 complexes exhibit different structural properties at low, intermediate, and high Tween-20 concentrations.