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基于聚（3-羟基丁酸酯-co-3-羟基戊酸酯）（PHBV）和氧化锌（ZnO）的电纺纳米系统用于生态食品包装

Electrospun Nanosystems Based on PHBV and ZnO for Ecological Food Packaging.

作者信息

Râpă Maria, Stefan Maria, Popa Paula Adriana, Toloman Dana, Leostean Cristian, Borodi Gheorghe, Vodnar Dan Cristian, Wrona Magdalena, Salafranca Jesús, Nerín Cristina, Barta Daniel Gabriel, Suciu Maria, Predescu Cristian, Matei Ecaterina

机构信息

Faculty of Materials Science and Engineering, University Politehnica of Bucharest, 313 Splaiul Independentei, 060042 Bucharest, Romania.

National Institute for Research and Development of Isotopic and Molecular Technologies, Donat Street 67-103, 400293 Cluj-Napoca, Romania.

出版信息

Polymers (Basel). 2021 Jun 28;13(13):2123. doi: 10.3390/polym13132123.

DOI:10.3390/polym13132123
PMID:34203404
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8272170/
Abstract

The electrospun nanosystems containing poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) and 1 wt% Fe doped ZnO nanoparticles (NPs) (with the content of dopant in the range of 0-1 wt% Fe) deposited onto polylactic acid (PLA) film were prepared for food packaging application. They were investigated by scanning electron microscopy (SEM), energy dispersive X-ray (EDX), Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), antimicrobial analysis, and X-ray photoelectron spectrometry (XPS) techniques. Migration studies conducted in acetic acid 3% (/) and ethanol 10% (/) food simulants as well as by the use of treated ashes with 3% HNO solution reveal that the migration of Zn and Fe falls into the specific limits imposed by the legislation in force. Results indicated that the PLA/PHBV/ZnO:Fex electrospun nanosystems exhibit excellent antibacterial activity against the (ATCC-27853) due to the generation of a larger amount of perhydroxyl (˙OOH) radicals as assessed using electron paramagnetic resonance (EPR) spectroscopy coupled with a spin trapping method.

摘要

制备了含有聚（3-羟基丁酸酯-co-3-羟基戊酸酯）（PHBV）和1 wt%铁掺杂氧化锌纳米颗粒（NPs）（掺杂剂含量在0-1 wt%铁范围内）并沉积在聚乳酸（PLA）薄膜上的电纺纳米系统，用于食品包装应用。通过扫描电子显微镜（SEM）、能量色散X射线（EDX）、傅里叶变换红外光谱（FT-IR）、X射线衍射（XRD）、抗菌分析和X射线光电子能谱（XPS）技术对其进行了研究。在3%（/）乙酸和10%（/）乙醇食品模拟物中以及通过使用3%硝酸溶液处理的灰烬进行的迁移研究表明，锌和铁的迁移符合现行法规规定的特定限值。结果表明，PLA/PHBV/ZnO:Fex电纺纳米系统对金黄色葡萄球菌（ATCC-27853）表现出优异的抗菌活性，这是由于使用电子顺磁共振（EPR）光谱结合自旋捕获方法评估发现产生了大量的过羟基（˙OOH）自由基。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06a6/8272170/8de2ddd4f12e/polymers-13-02123-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06a6/8272170/d09bad607eb7/polymers-13-02123-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06a6/8272170/8290f7fb7c5c/polymers-13-02123-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06a6/8272170/74935b8b4b7a/polymers-13-02123-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06a6/8272170/857ba040dfdd/polymers-13-02123-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06a6/8272170/a3e4b75705d6/polymers-13-02123-g005a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06a6/8272170/6a2a64a94b55/polymers-13-02123-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06a6/8272170/5bc031b856c9/polymers-13-02123-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06a6/8272170/7be4efdc3288/polymers-13-02123-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06a6/8272170/8de2ddd4f12e/polymers-13-02123-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06a6/8272170/d09bad607eb7/polymers-13-02123-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06a6/8272170/8290f7fb7c5c/polymers-13-02123-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06a6/8272170/74935b8b4b7a/polymers-13-02123-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06a6/8272170/857ba040dfdd/polymers-13-02123-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06a6/8272170/a3e4b75705d6/polymers-13-02123-g005a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06a6/8272170/6a2a64a94b55/polymers-13-02123-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06a6/8272170/5bc031b856c9/polymers-13-02123-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06a6/8272170/7be4efdc3288/polymers-13-02123-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/06a6/8272170/8de2ddd4f12e/polymers-13-02123-g009.jpg

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