期刊
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
卷 187, 期 -, 页码 858-866出版社
ELSEVIER
DOI: 10.1016/j.ijbiomac.2021.07.179
关键词
Active packaging films; Licorice flavonoids; Antibacterial activity
资金
- Key Project of Ningxia (East and West cooperation project) [2017BY079]
Antibacterial and antioxidant packaging films were developed by incorporating licorice residue extracts (LREs) into oxidized starch (OS) films. The bioactive fraction (BF) extracted from LREs showed potent antibacterial effects against MRSA and enhanced the physicochemical properties of the films. The films with higher BF concentrations exhibited increased antibacterial and antioxidant activities but also decreased tensile strength and increased elongation at break.
The antibacterial and antioxidant packaging films were fabricated by incorporating licorice residue extracts (LREs) into oxidized starch (OS) films. The bioactive fraction (BF) was firstly obtained from LREs by using bioassay-guided isolation method. The BF showed potent anti-Gram((+)) bacteria effects, especially against methicillin-resistant S. aureus (MRSA) with MIC of 32.5 mu g/mL. The present results also indicated that the addition of BF could significantly decrease the moisture content, water vapor permeability, light transmittance of OS films. Notably, the antibacterial and antioxidant activities of OS films significantly enhanced with the concentration of BF increasing. Moreover, the films with the highest concentration of BF showed the lowest tensile strength (4.23 MPa) and the highest elongation at break (63.89%). Meanwhile, the bioactive films could release bioactive compounds such as licochalcone A and licochalcone B into the alcoholic and fatty food simulants. Taken together, the active OS films containing LREs have the potential for application in food packaging films, due to its potential against MRSA and antioxidant activity as well as good physicochemical properties.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据