Gómez-Heincke Diana, Martínez Inmaculada, Partal Pedro, Guerrero Antonio, Gallegos Críspulo
Departamento de Ingeniería Química, Centro de Investigación en Tecnología de Productos y Procesos Químicos (Pro2TecS) - Campus de Excelencia Internacional Agroalimentario, CeiA3, Universidad de Huelva, Campus el Carmen, 21071, Huelva, Spain.
Departamento de Ingeniería Química, Universidad de Sevilla, Facultad de Química, Calle Profesor García González 1, 41012, Sevilla, Spain.
J Sci Food Agric. 2016 Aug;96(10):3432-8. doi: 10.1002/jsfa.7525. Epub 2015 Dec 21.
The incorporation of natural biocide agents into protein-based bioplastics, a source of biodegradable polymeric materials, manufactured by a thermo-mechanical method is a way to contribute to a sustainable food packaging industry. This study assesses the antimicrobial activity of 10 different biocides incorporated into wheat gluten-based bioplastics. The effect that formulation, processing, and further thermal treatments exert on the thermo-mechanical properties, water absorption characteristics and rheological behaviour of these materials is also studied.
Bioplastics containing six of the 10 examined bioactive agents have demonstrated suitable antimicrobial activity at 37 °C after their incorporation into the bioplastic. Moreover, the essential oils are able to create an antimicrobial atmosphere within a Petri dish.
Depending on the selected biocide, its addition may alter the bioplastics protein network in a different extent, which leads to materials exhibiting less water uptake and different rheological and thermo-mechanical behaviours. © 2015 Society of Chemical Industry.
将天然生物杀灭剂加入通过热机械法制造的基于蛋白质的生物塑料（一种可生物降解的聚合材料来源）中，是为可持续食品包装行业做出贡献的一种方式。本研究评估了加入基于小麦面筋的生物塑料中的10种不同生物杀灭剂的抗菌活性。还研究了配方、加工以及进一步的热处理对这些材料的热机械性能、吸水特性和流变行为的影响。
10种受试生物活性剂中的6种加入生物塑料后，在37°C时表现出了合适的抗菌活性。此外，香精油能够在培养皿内营造抗菌氛围。
根据所选的生物杀灭剂，其添加可能会在不同程度上改变生物塑料的蛋白质网络，从而导致材料表现出较少的吸水性以及不同的流变和热机械行为。© 2015化学工业协会。
