大豆分离蛋白与香芹酚和核桃皮提取物复合薄膜的特性和抗菌性

IF 3.6 4区 材料科学 Q2 MATERIALS SCIENCE, COMPOSITES
Zhiyong Qin, Meiyi Zou, Kehao Fan, Yunlong Lu
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引用次数: 0

摘要

为了减轻塑料污染并替代特定的传统聚合物包装,本研究以可生物降解的大豆分离蛋白(SPI)为基础,结合核桃皮提取物(WPE)和香芹酚(CV)的固有抗菌特性,制作了天然聚合物复合膜。SPI/WPE5%/CV5% 复合薄膜对大肠杆菌和金黄色葡萄球菌的抑制率分别为 99.66% 和 99.52%,对 DPPH 自由基的抑制率为 73.3%,对 ABTS 自由基的抑制率为 95.5%。SPI/WPE5%/CV5% 复合薄膜还具有优异的紫外线可见光阻隔性能。与纯 SPI 薄膜相比,SPI/WPE5%/CV5% 复合薄膜的拉伸强度提高了 89.00%,水溶性提高了 2.67%,水蒸气透过率降低了 7.69%,水接触角提高了 155.93%。傅立叶变换红外光谱研究可能表明,SPI/WPE/CV 复合薄膜中的多酚蛋白质是通过氢键结合在一起的。X 射线衍射研究表明,SWC 薄膜的结晶度有所增加。扫描电子显微镜结果显示了 SWC 薄膜的表面和内部分子结构。热重分析表明,添加 WPE 和 CV 后,SWC 薄膜的热性能得到改善。本研究对薄膜的释放进行了探索,发现复合薄膜可以持续释放多酚,从而起到抗菌和抗氧化的作用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Characterization and antibacterial of soybean protein isolate composite film with carvacrol and walnut peel extract
In order to alleviate plastic pollution and to substitute specific conventional polymer packaging, this research deployed biodegradable soy protein isolate (SPI) as a basis to create natural polymer composite films, integrating walnut peel extract (WPE) and carvacrol (CV) for their inherent antibacterial properties. The inhibition rates of the SPI/WPE5%/CV5% composite film on E.coli and S.aureus were 99.66% and 99.52%, the DPPH radical was 73.3% and ABTS radical was 95.5%. The SPI/WPE5%/CV5% composite film also exhibited excellent UV-visible barrier properties. Compared with the pure SPI film, the tensile strength of the SPI/WPE5%/CV5% composite film increased by 89.00%, the water solubility increased by 2.67%, and the water vapor permeability was reduced by 7.69%, While the water contact angle increased by 155.93%. Fourier Transform Infrared Spectroscopy studies possibly indicate that the polyphenol-proteins in the SPI/WPE/CV composite film are bound together by hydrogen bonding. X-ray Diffraction study demonstrated that the crystallinity of the SWC films increased. Scanning Electron Microscope results revealed the surface level and internal molecular structure of the SWC films. Thermal weight analysis showed that after adding WPE and CV, the thermal properties of the SWC films improved. This study explored release of the film and found that the composite film can continuously release polyphenols, which play an antibacterial and antioxidant role.
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来源期刊
Journal of Thermoplastic Composite Materials
Journal of Thermoplastic Composite Materials 工程技术-材料科学:复合
CiteScore
8.00
自引率
18.20%
发文量
104
审稿时长
5.9 months
期刊介绍: The Journal of Thermoplastic Composite Materials is a fully peer-reviewed international journal that publishes original research and review articles on polymers, nanocomposites, and particulate-, discontinuous-, and continuous-fiber-reinforced materials in the areas of processing, materials science, mechanics, durability, design, non destructive evaluation and manufacturing science. This journal is a member of the Committee on Publication Ethics (COPE).
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