Biodegradation of Aliphatic-Aromatic Copolyesters by Thermomonospora fusca and Other Thermophilic Compost Isolates
Biodegradation of Aliphatic-Aromatic Copolyesters by Thermomonospora fusca and Other Thermophilic Compost Isolates
复制标题
暗色热单孢菌和其他嗜热堆肥分离物对脂肪族-芳香族共聚酯的生物降解
DOI：
10.1128/aem.64.5.1731-1735.1998
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发表时间：
1998
影响因子：
4.4
通讯作者：
W. Deckwer
中科院分区：
文献类型：
--
作者：
I. Kleeberg;C. Hetz;R. Kroppenstedt;R. Müller;W. Deckwer
摘要 由 1,4-丁二醇、己二酸和对苯二甲酸 (BTA) 合成的无规脂肪族-芳香族共聚酯具有优异的热性能和机械性能，并且可通过混合培养物（例如在堆肥中）进行生物降解。以堆肥为微生物来源，分离出 20 多种 BTA 降解菌株。在这些微生物中，嗜热放线菌显然发挥着突出的作用，并且似乎在初始降解步骤中占主导地位。两种放线菌菌株的 BTA 降解率比普通堆肥测试中通常观察到的高约 20 倍。这些分离株被鉴定为暗色热单孢菌菌株。它们似乎特别适合建立快速降解测试，并用于各种聚酯生物降解的比较研究。
ABSTRACT Random aliphatic-aromatic copolyesters synthesized from 1,4-butanediol, adipic acid, and terephthalic acid (BTA) have excellent thermal and mechanical properties and are biodegradable by mixed cultures (e.g., in compost). Over 20 BTA-degrading strains were isolated by using compost as a microbial source. Among these microorganisms, thermophilic actinomycetes obviously play an outstanding role and appear to dominate the initial degradation step. Two actinomycete strains exhibited about 20-fold higher BTA degradation rates than usually observed in a common compost test. These isolates were identified as Thermomonospora fusca strains. They appeared to be particularly suitable for establishment of rapid degradation tests and were used in comparative studies on the biodegradation of various polyesters.