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Appl Environ Microbiol, May 1998, p. 1731-1735, Vol. 64, No. 5
0099-2240/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.

Biodegradation of Aliphatic-Aromatic Copolyesters by Thermomonospora fusca and Other Thermophilic Compost Isolates

Ilona Kleeberg,1 Claudia Hetz,1 Reiner Michael Kroppenstedt,2 Rolf-Joachim Müller,1,* and Wolf-Dieter Deckwer1

Gesellschaft für Biotechnologische Forschung mbH1 and Deutsche Sammlung für Mikroorganismen und Zellkulturen,2 D-38124 Braunschweig, Germany

Received 6 October 1997/Accepted 6 March 1998

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.

* Corresponding author. Mailing address: Gesellschaft für Biotechnologische Forschung mbH, Mascheroder Weg 1, 38124 Braunschweig, Germany. Phone: 49 531 6181610. Fax: 49 531 6181175. E-mail: rmu{at}gbf.de.

Appl Environ Microbiol, May 1998, p. 1731-1735, Vol. 64, No. 5
0099-2240/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.


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