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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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淀粉填充聚乙烯类塑料降解微生物的筛选和降解特性
DOI: 10.3724/SP.J.1145.2013.00683, PP. 683-687
Keywords: 淀粉填充类塑料,菌种筛选,生物降解,解淀粉芽孢杆菌
Abstract:
为了加速塑料降解、减少环境污染，通过富集培养、透明圈、菌浓检测等方法从垃圾堆埋场土壤中筛选出降解淀粉填充聚乙烯（pe）类塑料的微生物1株，经16srdna同源性比对，鉴定出该菌株与解淀粉芽孢杆菌（bacillusamyloliquefaciens）同源性为99%.在基本培养基中利用该菌降解淀粉填充pe类塑料，通过失重、热重分析、扫描电镜法研究其降解特性，发现降解两周后塑料失重率达23.2%，淀粉含量减少13.8%，聚乙烯含量减少9.4%，并且塑料颗粒表面缺损变化明显.研究表明该菌株能够高效降解淀粉填充pe类塑料，可用于该类塑料的回收利用和降解性能快速评价.图6表1参26
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