Barrier properties, mechanical properties and antimicrobial activity of hydroxypropyl methylcellulose-based nanocomposite films incorporated with Thai essential oils
Barrier properties, mechanical properties and antimicrobial activity of hydroxypropyl methylcellulose-based nanocomposite films incorporated with Thai essential oils
复制标题
DOI：
10.1016/j.foodhyd.2016.06.018
复制
发表时间：
2016-12-01
影响因子：
10.7
通讯作者：
Sothornvit, Rungsinee
中科院分区：
文献类型：
--
作者：
Klangmuang, Ploy;Sothornvit, Rungsinee
羟丙基甲基纤维素(HPMC)是一种很有前途的亲水胶体，可用作生物聚合物膜。在HPMC膜中加入有机改性粘土、高岭土30B和蜂蜡，以提高HPMC膜的阻隔性和力学性能。然而，基于HPMC的纳米复合膜没有表现出任何抗菌活性，这将提高作为活性包装的薄膜的性能。因此，本研究的目的是确定泰国精油(EOS)对HPMC纳米复合膜的影响。选择了3个泰国Eos--生姜(G)、指根(F)和平原(P)。P或F的加入提高了HPMC基纳米复合薄膜的透氧率，而G的加入没有提高薄膜的透氧率。在HPMC基纳米复合薄膜中掺入磷提高了薄膜的透水率。正如预期的那样，Eos影响了胶片的总颜色。加入G和F的HPMC基纳米复合膜的弹性模量和拉伸强度降低，伸长率增加，琼脂纸片扩散法显示出对金黄色葡萄球菌和大肠杆菌的抑菌活性。因此，掺入环氧乙烷的HPMC基纳米复合膜可能适合作为活性包装材料或作为活性涂层应用于新鲜水果等农产品上，以保持其质量和延长其货架期。(C)2016爱思唯尔有限公司。保留所有权利。
Hydroxypropyl methylcellulose (HPMC) is a promising hydrocolloid for use as a biopolymer film. Organically modified clay Cloisite 30B and beeswax were combined in the HPMC film to improve barrier and mechanical properties of HPMC films. However, HPMC-based nanocomposite film does not show any antimicrobial activity, which would enhance the film properties as an active package. Thus, the objective of this study was to determine the effect of Thai essential oils (EOs) on HPMC-based nanocomposite films. Three Thai EOs were selected-ginger (G), fingerroot (F) and plai (P). The addition of P or F increased the HPMC-based nanocomposite film oxygen permeability, but the addition of G did not. Incorporation of P in HPMC-based nanocomposite film increased the water vapor permeability of the films. As expected, EOs affected the total film color. Decreases in the elastic modulus and tensile strength accompanied with an increase in elongation were observed in film incorporated with G and F. HPMC-based nanocomposite films incorporated with F showed antimicrobial activity against Staphylococcus aureus and Escherichia coli using agar disc-diffusion assay. Therefore, HPMC-based nanocomposite films incorporated with EO might be suitable to apply as an active packaging material or as an active coating on agricultural produce such as fresh fruits to maintain their quality and extend their shelf life. (C) 2016 Elsevier Ltd. All rights reserved.