Preparation and characterization of soy protein films with a durable water resistance-adjustable and antimicrobial surface
Preparation and characterization of soy protein films with a durable water resistance-adjustable and antimicrobial surface
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DOI：
10.1016/j.msec.2016.07.079
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发表时间：
2016-12-01
影响因子：
7.9
通讯作者：
Liu, Qiang
中科院分区：
文献类型：
--
作者：
Li, Shuzhao;Donner, Elizabeth;Liu, Qiang
首先通过在大豆分离蛋白（SPI）膜上固定疏水性共聚物聚（苯乙烯-甲基丙烯酸缩水甘油酯）（PSG），获得防水表面。XPS和AFM结果表明，PSG共聚物以化学键的方式固定在薄膜上，由于PSG共聚物上两个不同相的分离，形成了带有凹凸不平的粗糙表面。改性膜的耐水性可以通过在所得疏水表面上进一步固定不同量的基于胍的抗微生物聚合物聚（盐酸胍）（PHMG）来显著调节。亲水性PHMG的引入在所得表面上产生许多微孔，这潜在地增加了改性膜的吸水性。此外，改性的SPI膜显示出更高的热稳定性相比，天然SPI膜和广谱的抗菌活性的接触杀伤，归因于PHMG的存在下，在表面上。改性SPI膜具有多功能表面，在包装和医疗领域具有潜在的应用前景。皇冠版权所有（C）2016由Elsevier B. V.出版。保留所有权利。
A water resistant surface was first obtained by immobilizing hydrophobic copolymers, poly (styrene-co-glycidyl methacrylate) (PSG), with functional groups on soy protein isolate (SPI) films. XPS and AFM results showed that PSG copolymers were immobilized on the film by chemical bonding, and formed a rough surface with some bumps because of the segregation of two different phases on PSG copolymers. Water resistance of the modified films could be adjusted dramatically by further immobilizing different amounts of guanidine-based antimicrobial polymers, poly (hexamethylene guanidine hydrochloride) (PHMG) on the resulting hydrophobic surface. The introduction of hydrophilic PHMG on the resulting surface generated many micropores, which potentially increased the water uptake of the modified films. Furthermore, the modified SPI films showed higher thermostability compared to native SPI film and broad-spectrum antimicrobial activity by contact killing, attributed to the presence of PHMG on the surface. The modified SPI film with a multi-functional surface showed potential for applications in the packaging and medical fields. Crown Copyright (C) 2016 Published by Elsevier B.V. All rights reserved.