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Active cellulose acetate-carvacrol films: Antibacterial, physical and thermal properties
Packaging Technology and Science ( IF 2.8 ) Pub Date : 2021-04-05 , DOI: 10.1002/pts.2570 Denise Adamoli Laroque 1 , Glaucia Maria Falcão Aragão 1 , Pedro Henrique Hermes Araújo 1 , Bruno Augusto Mattar Carciofi 1
Packaging Technology and Science ( IF 2.8 ) Pub Date : 2021-04-05 , DOI: 10.1002/pts.2570 Denise Adamoli Laroque 1 , Glaucia Maria Falcão Aragão 1 , Pedro Henrique Hermes Araújo 1 , Bruno Augusto Mattar Carciofi 1
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Cellulose acetate (CA) is a low cost, biodegradable polymer obtained from renewable resources. The development of CA active films to reduce or inhibit microbial growth in food could increase food products' shelf-life while decreasing the use of petroleum-based non-biodegradable polymers on food packaging. In this work, CA films containing carvacrol, a major antimicrobial compound in oregano essential oil, were obtained by solvent-casting and extensively characterised. Results showed that carvacrol in concentrations up to 10 wt.% was homogeneously distributed on transparent and continuous films. Carvacrol had little effect on water barrier properties, elongation, and stiffness while decreasing the melting and glass transition temperatures of the CA films. The sustained release of carvacrol to the vapour phase was observed over 10 weeks. Films with 10 wt.% of carvacrol were bactericidal against Weissella viridescens and Pseudomonas fluorescens and extended in 2.8 times the shelf-life for the vacuum-packaged ham. The physical and antibacterial properties demonstrated the feasibility of CA films containing carvacrol for active packaging and food shelf life extension.
中文翻译：
活性醋酸纤维素-香芹酚薄膜：抗菌、物理和热性能
醋酸纤维素 (CA) 是一种从可再生资源中获得的低成本、可生物降解的聚合物。开发用于减少或抑制食品中微生物生长的 CA 活性薄膜可以延长食品的保质期，同时减少食品包装中石油基不可生物降解聚合物的使用。在这项工作中，通过溶剂浇铸获得含有香芹酚（牛至精油中的主要抗菌化合物）的 CA 薄膜，并对其进行了广泛的表征。结果表明，浓度高达 10 wt.% 的香芹酚均匀分布在透明和连续的薄膜上。香芹酚对水阻隔性能、伸长率和刚度几乎没有影响，同时降低了 CA 薄膜的熔化和玻璃化转变温度。在 10 周内观察到香芹酚持续释放到气相。Weissella viridescens和Pseudomonas fluorescens，并将真空包装火腿的保质期延长了 2.8 倍。物理和抗菌性能证明了含有香芹酚的 CA 薄膜用于活性包装和延长食品保质期的可行性。
更新日期：2021-04-05
中文翻译：
活性醋酸纤维素-香芹酚薄膜：抗菌、物理和热性能
醋酸纤维素 (CA) 是一种从可再生资源中获得的低成本、可生物降解的聚合物。开发用于减少或抑制食品中微生物生长的 CA 活性薄膜可以延长食品的保质期，同时减少食品包装中石油基不可生物降解聚合物的使用。在这项工作中，通过溶剂浇铸获得含有香芹酚（牛至精油中的主要抗菌化合物）的 CA 薄膜，并对其进行了广泛的表征。结果表明，浓度高达 10 wt.% 的香芹酚均匀分布在透明和连续的薄膜上。香芹酚对水阻隔性能、伸长率和刚度几乎没有影响，同时降低了 CA 薄膜的熔化和玻璃化转变温度。在 10 周内观察到香芹酚持续释放到气相。Weissella viridescens和Pseudomonas fluorescens，并将真空包装火腿的保质期延长了 2.8 倍。物理和抗菌性能证明了含有香芹酚的 CA 薄膜用于活性包装和延长食品保质期的可行性。
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