Yang Jun, Song Yi-ling, Qin Xiao-yan
Department of Environmental Engineering, Beihang University, Beijing 100083, China.
Huan Jing Ke Xue. 2007 May;28(5):1165-8.
Plastic material is one of the most serious solid wastes pollution. More than 40 million tons of plastics produced each year are discarded into environment. Plastics accumulated in the environment is highly resistant to biodegradation and not be able to take part in substance recycle. To increase the biodegradation efficiency of plastics by different means is the main research direction. This article reviewed the recent research works of polyethylene biodegradation that included the modification and pretreatment of polyethylene, biodegradation pathway, the relevant microbes and enzymes and the changes of physical, chemical and biological properties after biodegradation. The study directions of exploiting the kinds of life-forms of biodegradation polyethylene except the microorganisms, isolating and cloning the key enzymes and gene that could produce active groups, and enhancing the study on polyethylene biodegradation without additive were proposed.
塑料材料是最严重的固体废弃物污染之一。每年生产的超过4000万吨塑料被丢弃到环境中。积累在环境中的塑料具有高度的抗生物降解性，无法参与物质循环。通过不同方式提高塑料的生物降解效率是主要研究方向。本文综述了聚乙烯生物降解的近期研究工作，包括聚乙烯的改性与预处理、生物降解途径、相关微生物和酶以及生物降解后物理、化学和生物学性质的变化。提出了除微生物外开发聚乙烯生物降解生命形式种类、分离克隆能产生活性基团的关键酶和基因以及加强无添加剂聚乙烯生物降解研究的方向。
