百里香酚
纳米纤维
食品包装
聚乙烯醇
公认安全
化学
活性包装
普鲁兰
生物相容性
材料科学
抗菌活性
食品科学
纳米技术
有机化学
精油
细菌
多糖
生物
遗传学
作者
Tiantian Min,Xiance Sun,Liping Zhou,Haiyu Du,Zhu Zhu
标识
DOI:10.1016/j.carbpol.2021.118391
摘要
Pathogenic microorganisms posed perniciousness for postharvest fruits and vegetables, as well as brought potential risks for human health. In this work, pullulan/polyvinyl alcohol (PUL/PVA) nanofibers incorporated with thymol-loaded porphyrin metal-organic framework nanoparticles (THY@PCN-224 NPs) were developed for antibacterial food packaging. PCN-224 MOFs not only act as thymol loading carriers but also highly produce singlet oxygen (1O2) with bactericidal activity. PUL/PVA nanofiber was a promising sustainable substrate because of its good flexibility, biocompatibility and biodegradability. The loading capacity of PCN-224 for thymol was about 20%. The THY@PCN/PUL/PVA nanofibers exhibited synergistic antibacterial activities against E. coli (~99%) and S. aureus (~98%) under light irradiation. The cell viability assays and fruit preservation study demonstrated good biosafety of the polymeric film. The results suggested that this novel nanofiber has potential application prospects for food packaging.
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