果胶
皮克林乳液
差示扫描量热法
傅里叶变换红外光谱
化学
化学工程
圆二色性
动态光散射
乳状液
高分子化学
有机化学
食品科学
立体化学
纳米颗粒
工程类
物理
热力学
作者
Wei Zhang,Xuefan Gu,Xiaohui Liu,Zhengwu Wang
标识
DOI:10.1016/j.carbpol.2020.117515
摘要
Although the stabilization of Pickering emulsions based on the interaction of pectin and zein is known to be effective, the effects of the degree of methylation (DM) of pectin on the stability of Pickering emulsions remains unclear. In the present study, pectin/zein particle dispersions (PZDs) were fabricated by anti-solvent precipitation based on different DM values of pectin (13.70 %–71.42 %). Differential Scanning Calorimetry (DSC) curves and Fourier transform infrared spectroscopy (FTIR) confirmed the methyl ester carbonyl and carbonyl groups significantly affected the formation of hydrogen bonds, which consequently resulting in the secondary conformation of PZDs as reflected by circular dichroism (CD). The PZDs fabricated by pectin with DM values higher than 35.50 % formation of the network between the barriers of the droplets, showed high stability against pH (3.0–9.0) and Ca2+ (60–300 mM) at an oil fraction (φ) of 0.60. Furthermore, the Pickering emulsions showed good lycopene protective effects.
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