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The sustainability of microbial bioplastics, production and applications

机译:微生物生物塑料,生产和应用的可持续性

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Plastic accumulation has destructive environmental impacts, so the world needs eco-friendly plastic alternatives. Within this context, polyhydroxyalkanoates (PHAs) appear to be real alternatives to the chemical plastics because they are biocompatible and biodegradable. Despite its similar properties to common plastics, PHAs use is still hampered by higher production costs. PHAs are produced by high density fed-batch cultivation, activated sludge, microbial consortia and continuous substrate supply, and a major cost associated with their production is the carbon source used for bacterial fermentation. Therefore, novel carbon sources have been studied for PHA production including, macro algae, peanut oil, crude glycerol and whey. PHAs were applied in myriad fields such as wood production, food packaging 3D painting, cancer detection, treating ulcers as well as several agricultural and therapeutic applications. In this review, current knowledge of methods and novel carbon sources enhance the sustainability and reliability of PHAs in the prospective future. (C) 2020 Elsevier B.V. All rights reserved.
机译:塑料积聚具有破坏性的环境影响,因此世界需要环保塑料替代品。在这种情况下,多羟基烷烷(PHA)似乎是化学塑料的真正替代品,因为它们是生物相容性和可生物降解的。尽管其与普通塑料相似,但PHA使用仍然受到更高生产成本的阻碍。 PHA是由高密度进料分批栽培,活性污泥,微生物组成和连续基板供应产生的,以及与其生产相关的主要成本是用于细菌发酵的碳源。因此,已经研究了新型碳源,用于PHA生产,包括宏观藻类,花生油,粗甘油和乳清。 PHA应用于无数领域,如木材生产,食品包装3D涂料,癌症检测,治疗溃疡以及几种农业和治疗应用。在本次审查中,目前的方法和新型碳源的知识增强了前瞻性未来在PHA的可持续性和可靠性。 (c)2020 Elsevier B.v.保留所有权利。

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