自愈水凝胶
互穿聚合物网络
生物相容性
肿胀 的
动态力学分析
傅里叶变换红外光谱
材料科学
化学工程
聚合物
大豆蛋白
扫描电子显微镜
流变学
高分子化学
化学
复合材料
食品科学
工程类
作者
Yang Yang,Can Zhang,Xin Bian,Likun Ren,Chunmin Ma,Yue Xu,Dan Su,Lianzhong Ai,Mingshi Song,Na Zhang
摘要
Abstract BACKGROUND This study used enzymatic and Ca 2+ cross‐linking methods to prepare edible soy protein isolate (SPI) and sodium alginate (SA) interpenetrating polymer network hydrogels to overcome the disadvantages of traditional interpenetrating polymer network (IPN) hydrogels, such as poor performance, high toxicity, and inedibility. The influence of changes in SPI and SA mass ratio on the performance of SPI‐SA IPN hydrogels was investigated. RESULTS Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM) were used to characterize the structure of the hydrogels. Texture profile analysis (TPA), rheological properties, swelling rate, and Cell Counting Kit‐8 (CCK‐8) were used to evaluate physical and chemical properties and safety. The results showed that, compared with SPI hydrogel, IPN hydrogels had better gel properties and structural stability. As the mass ratio of SPI‐SA IPN changed from 1:0.2 to 1:1, the gel network structure of hydrogels also tended to be dense and uniform. The water retention and mechanical properties of these hydrogels, such as storage modulus (G'), loss modulus (G"), and gel hardness increased significantly and were greater than those of the SPI hydrogel. Cytotoxicity tests were also performed. The biocompatibility of these hydrogels was good. CONCLUSIONS This study proposes a new method to prepare food‐grade IPN hydrogels with mechanical properties of SPI and SA, which may have strong potential for the development of new foods. © 2023 Society of Chemical Industry.
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