化学
肿胀 的
复合数
盐(化学)
氢键
化学工程
钠
疏水效应
微观结构
氯化物
材料科学
分子
有机化学
复合材料
结晶学
工程类
作者
Yang Qin,Yaru Wang,Yi-Jing Li-Sha,Hanqing Chen
标识
DOI:10.1016/j.foodhyd.2020.106545
摘要
In this study, the effects of calcium chloride (CaCl2) and sodium chloride (NaCl) with different concentrations (0–20 mM) on the properties of arachin and basil seed gum composite gels were investigated. The results showed that the G′, G″ and gel strength of the composite gels were enhanced by Ca2+ and Na+ at a low concentration and decreased at high concentrations. An appropriate concentration of Ca2+ or Na+ (10 mM) strengthened the electrostatic forces, hydrophobic interactions, hydrogen bonds, disulfide bonds and facilitated a conformation conversion of the secondary structures from α-helix to β-sheet. These changes were responsible for the improved hydration properties including water-holding capacity, freeze-thaw stability and swelling behavior of the composite gels in the presence of 10 mM Ca2+ or Na+, which could be explained by the images of compact and uniform microstructures. High concentration of salt ions (15–20 mM) hindered the formation of regular gel network. These findings may facilitate the design of arachin-based gel products with improved texture and sensory characteristics.
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