Abstract Antifungal films based on poly(lactic acid)/poly(butylene-succinate-co-adipate) (PLA/PBSA) blends containing 3 wt% (LT-PLA/PBSA) and 6 wt% (HT-PLA/PBSA) of thymol were prepared using blown film extrusion technique. In vitro antifungal activity of the films against Aspergillus spp. and Penicillium spp. was evaluated using a vapor contact assay. The antifungal films containing thymol were highly effective against fungal growth as compared to the neat PLA film and PLA/PBSA blend film. The addition of PBSA and thymol resulted in decreased glass transition temperature and melting temperature. All active films exhibited significantly lower tensile strength and Young’s modulus but higher elongation at break compared to the neat PLA. The permeability coefficients of water vapor, oxygen, and carbon dioxide (CO2) of the PLA/PBSA blend films containing thymol were lower than those of the neat PLA film. The antifungal films were tested for bread packaging, compared with biaxially oriented polypropylene (BOPP) and neat PLA. Mold growth was observed on the bread packaged in LT-PLA/PBSA and HT-PLA/PBSA after storage for 7 and 9 d, respectively. Whereas, the bread in BOPP and neat PLA packaging showed visible mold growth after storage for 3 and 6 d, respectively. Yeast and mold counts increased throughout the storage period, which were 7.13, 5.83, 5.38 and

中文翻译：

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含有百里酚的聚（乳酸）/聚（丁二酸丁二醇酯-共-己二酸酯）（PLA/PBSA）共混薄膜可替代合成防腐剂，用于面包的主动包装

摘要 基于聚（乳酸）/聚（丁二酸丁二醇酯-共-己二酸酯）（PLA/PBSA）共混物的抗真菌薄膜含有 3 wt% (LT-PLA/PBSA) 和 6 wt% (HT-PLA/PBSA)百里酚是使用吹膜挤出技术制备的。薄膜对曲霉属的体外抗真菌活性。和青霉属。使用蒸气接触测定法进行评估。与纯 PLA 薄膜和 PLA/PBSA 混合薄膜相比，含有百里酚的抗真菌薄膜对真菌生长非常有效。添加 PBSA 和百里酚导致玻璃化转变温度和熔化温度降低。与纯 PLA 相比，所有活性薄膜的拉伸强度和杨氏模量均显着降低，但断裂伸长率更高。水蒸气、氧气的渗透系数，含有百里酚的 PLA/PBSA 共混薄膜的二氧化碳 (CO2) 和二氧化碳 (CO2) 低于纯 PLA 薄膜。与双向拉伸聚丙烯 (BOPP) 和纯 PLA 相比，抗真菌薄膜用于面包包装。分别在 LT-PLA/PBSA 和 HT-PLA/PBSA 中储存 7 天和 9 天后，在包装的面包上观察到霉菌生长。而采用 BOPP 和纯 PLA 包装的面包分别在储存 3 天和 6 天后显示出可见的霉菌生长。酵母菌和霉菌计数在整个储存期间增加，分别为 7.13、5.83、5.38 和 分别。而采用 BOPP 和纯 PLA 包装的面包分别在储存 3 天和 6 天后显示出可见的霉菌生长。酵母菌和霉菌计数在整个储存期间增加，分别为 7.13、5.83、5.38 和 分别。而采用 BOPP 和纯 PLA 包装的面包分别在储存 3 天和 6 天后显示出可见的霉菌生长。酵母菌和霉菌计数在整个储存期间增加，分别为 7.13、5.83、5.38 和