Abstract The active poly(vinyl alcohol) (PVA) films incorporated with clove oil (CO) at level of 1%, 3%, 5%, 7% and 9% (w/w) was prepared. The effects of CO content on the structural, mechanical, gas barrier and thermal stability properties of the films were investigated. The antimicrobial and antioxidant activities in vapour phase of the films were evaluated by investigating the microbiological analyses and lipid oxidation of the packed trichiurus haumela without contacting the PVA films. The oil droplets were observed on the surface and cross-section of the films as CO increased from 3% to 9% via scanning electron microscope (SEM). It resulted in the heterogeneous film structure featuring discontinuities. Some negative impacts on the properties of the films were observed with increasing CO. Compared with pure PVA film, the tensile strength (TS) of film added with 9% CO decreased 14.13%, the elongation at break increased 26.64%, water vapor transmission rate (WVTR) reduced 54.31%, oxygen transmission rate (OTR) increased 90.77% and thermal stability was worsened slightly. The bacterial growth and lipid oxidation of the packed trichiurus haumela were inhibited by the packaging with CO-containing films. The PVA film containing 9% CO showed the best quality protective effectiveness. Its microbiological shelf-life could be extended for 2 days and 28.07% reduction of malonaldehyde was obtained on day 7 comparing with control sample, indicating the antimicrobial and antioxidant activities were effective in vapour phase. It could be a promising active packaging for potential application in the non direct contact packaging-food system to create a protective atmosphere around the packaged foodstuffs.

中文翻译：

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加入丁香油的活性聚乙烯醇包装膜的特性、气相抗菌和抗氧化活性

摘要 制备了含有 1%、3%、5%、7% 和 9% (w/w) 丁香油 (CO) 的活性聚乙烯醇 (PVA) 薄膜。研究了 CO 含量对薄膜结构、机械、气体阻隔和热稳定性能的影响。通过在不接触 PVA 薄膜的情况下研究包装的 tichiurus haumela 的微生物分析和脂质氧化，评估薄膜在气相中的抗菌和抗氧化活性。通过扫描电子显微镜 (SEM) 在 CO 从 3% 增加到 9% 时，在薄膜的表面和截面上观察到油滴。这导致了具有不连续性的异质膜结构。随着 CO 的增加，观察到对薄膜性能的一些负面影响。 与纯 PVA 薄膜相比，添加9%CO的薄膜拉伸强度（TS）降低14.13%，断裂伸长率提高26.64%，水蒸气透过率（WVTR）降低54.31%，透氧率（OTR）提高90.77%，热稳定性变差轻微地。用含 CO 的薄膜包装抑制了包装的金毛鞭毛虫的细菌生长和脂质氧化。含有 9% CO 的 PVA 薄膜显示出最好的质量保护效果。其微生物保质期可延长 2 天，与对照样品相比，第 7 天的丙二醛减少了 28.07%，表明其在气相中的抗菌和抗氧化活性是有效的。