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浙江大学学报（农业与生命科学版）
浙江大学学报（农业与生命科学版）  2023, Vol. 49 Issue (3): 368-375    DOI: 10.3785/j.issn.1008-9209.2022.07.011
食品科学     
负载百里酚的聚己内酯纳米纤维膜制备及保鲜应用研究
金蓉1(),蔡子涵2,赵以勒2,沈超怡3,杨智超3,吴迪2,4(),陈昆松2
1.浙江大学农业试验站，浙江 杭州 310058
2.浙江大学农业与生物技术学院，浙江 杭州 310058
3.浙江大学生物系统工程与食品科学学院，浙江 杭州 310058
4.浙江大学中原研究院，河南 郑州 450000
Fabrication of thymol-loaded polycaprolactone nanofiber membrane for freshness preservation
Rong JIN1(),Zihan CAI2,Yile ZHAO2,Chaoyi SHEN3,Zhichao YANG3,Di WU2,4(),Kunsong CHEN2
1.Agricultural Experiment Station, Zhejiang University, Hangzhou 310058, Zhejiang, China
2.College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, Zhejiang, China
3.College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, Zhejiang, China
4.Zhongyuan Institute, Zhejiang University, Zhengzhou 450000, Henan, China
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摘要：

现有的传统活性保鲜包装存在孔隙率低、透气性差等缺点，因此制备纳米级保鲜控释包装材料是果蔬采后贮藏和物流领域中的研究热点。本研究采用溶液吹塑纺丝技术制备负载百里酚（thymol, THY）的聚己内酯（polycaprolactone, PCL）纳米纤维膜，并通过材料表征和抑菌实验对THY/PCL纳米纤维膜的性能进行评价。结果表明：负载THY后，PCL纳米纤维膜的结晶度降低，热稳定性提高，而水蒸气透过性能、表面疏水性与机械性能未受影响。此外，THY/PCL纳米纤维膜对大肠埃希菌和金黄色葡萄球菌表现出良好的抑菌活性，展现了在果蔬采后保鲜领域良好的应用前景。
关键词： 溶液吹塑纺丝;  纳米纤维;  百里酚;  聚己内酯;  果蔬;  抑菌    
Abstract:

The existing traditional active preservation packaging has disadvantages such as low porosity and poor air permeability, so the fabrication of nano-scale packaging materials that can release slowly and retain freshness is a hot research topic in the field of storage and logistics of postharvest fruits and vegetables. In this study, polycaprolactone (PCL) nanofiber membranes loaded by thymol (THY) were prepared by the solution blow spinning technique, and the properties of THY/PCL nanofiber membranes were evaluated by material characterization and bacterial inhibition experiments. The results showed that the THY/PCL nanofiber membranes had lower crystallinity and increased thermal stability, while their water vapor permeable properties, surface hydrophobicity, and mechanical properties were not affected. In addition, the THY/PCL nanofiber membranes showed good antibacterial activity against Escherichia coli and Staphylococcus aureus, demonstrating a good application prospect in the field of postharvest preservation of fruits and vegetables.
Key words: solution blow spinning    nanofiber    thymol    polycaprolactone    fruits and vegetables    antibacterial
收稿日期: 2022-07-01 出版日期: 2023-06-25
CLC:  S609.3  
基金资助: 浙江省重点研发计划项目(2019C02074);浙江省教育厅一般科研项目(Y202148177);浙江大学科研发展专项(2021FZZX001-55)
通讯作者: 吴迪     E-mail: rong@zju.edu.cn;di_wu@zju.edu.cn
作者简介: 金蓉（https://orcid.org/0000-0002-3703-3784），E-mail：rong@zju.edu.cn
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金蓉
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引用本文:

金蓉,蔡子涵,赵以勒,沈超怡,杨智超,吴迪,陈昆松. 负载百里酚的聚己内酯纳米纤维膜制备及保鲜应用研究[J]. 浙江大学学报（农业与生命科学版）, 2023, 49(3): 368-375.

Rong JIN,Zihan CAI,Yile ZHAO,Chaoyi SHEN,Zhichao YANG,Di WU,Kunsong CHEN. Fabrication of thymol-loaded polycaprolactone nanofiber membrane for freshness preservation. Journal of Zhejiang University (Agriculture and Life Sciences), 2023, 49(3): 368-375.

链接本文:

https://www.zjujournals.com/agr/CN/10.3785/j.issn.1008-9209.2022.07.011    或    https://www.zjujournals.com/agr/CN/Y2023/V49/I3/368

图1  PCL纳米纤维的扫描电镜图
图2  THY和THY/PCL、PCL纳米纤维膜的傅里叶变换红外光谱
图3  THY（A）和THY/PCL纳米纤维膜（B）的X射线衍射结果
图4  PCL和THY/PCL纳米纤维膜的DSC曲线（A）和TGA曲线（B～C）
图5  PCL和THY/PCL纳米纤维膜的机械性能短栅上不同或相同小写字母表示在P＜0.05水平差异有或无统计学意义，下同。
图6  PCL和THY/PCL纳米纤维膜的水接触角
图7  PCL和THY/PCL纳米纤维膜的水蒸气透过系数
图8  PCL和THY/PCL纳米纤维膜对金黄色葡萄球菌、大肠埃希菌的抑菌活性
图9  PCL和THY/PCL纳米纤维膜处理下金黄色葡萄球菌（A）和大肠埃希菌（B）的抑菌圈直径
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