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Protein-based bioplastics and their antibacterial potential

机译：蛋白质基生物塑料及其抗菌潜力

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摘要

The use of conventional petroleum-based plastics in many applications poses the risk of contamination, potentially causing infection when used in medical applications, and contamination when used in food packaging. Nontraditional materials such as protein are being examined for their potential use in the production of bioplastics for applications that require uncontaminated materials. The proteins of albumin, soy, and whey provide possible sources of raw material for bioplastic production, as they have already been utilized in the area of edible films and low-stress applications. We conducted this study to investigate the thermal, viscoelastic, and antibacterial properties of the albumin, soy, and whey bioplastics with the use of three plasticizerswater, glycerol, and natural rubber latex (NRL). Bacillus subtilis and Escherichia coli were utilized as Gram (+) and Gram (-) species, respectively, for antimicrobial analysis. Albumin and whey bioplastics exhibited similar thermal and viscoelastic properties, whereas soy bioplastics had varied viscoelastic properties based on the plasticizer used. In terms of antibacterial activity, the albumin-glycerol and whey-glycerol were the best bioplastics, as no bacterial growth was observed on the plastics after 24 h of inoculation. In terms of the future impact of this research, the aim will be to scale up production of the bioplastics for use in food packaging as well as biomedical applications. (c) 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 41931.
机译：在许多应用中使用常规的石油基塑料存在污染的风险，在医疗应用中可能引起感染，而在食品包装中则可能造成污染。目前正在研究非传统材料（例如蛋白质）在生物塑料生产中的潜在用途，以用于需要未污染材料的应用。白蛋白，大豆和乳清的蛋白质为生物塑料生产提供了可能的原料来源，因为它们已被用于可食用薄膜和低压力应用领域。我们进行了这项研究，以研究使用三种增塑剂水，甘油和天然橡胶胶乳（NRL）的白蛋白，大豆和乳清生物塑料的热，粘弹性和抗菌性能。枯草芽孢杆菌和大肠杆菌分别用作革兰氏菌（+）和革兰氏菌（-）进行抗菌分析。白蛋白和乳清生物塑料表现出相似的热和粘弹性，而大豆生物塑料根据所使用的增塑剂具有不同的粘弹性。就抗菌活性而言，白蛋白甘油和乳清甘油是最好的生物塑料，因为接种24小时后在塑料上未观察到细菌生长。就这项研究的未来影响而言，目标是扩大用于食品包装和生物医学应用的生物塑料的生产。 （c）2015 Wiley Periodicals，Inc. J. Appl。 Polym。科学2015，132，41931。

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