Degradation of polyethylene succinate (PES) by a new thermophilic Microbispora strain
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Thermophilic actinomycetes were isolated from sediment of the Chingshuei hot spring in north Taiwan, and the strain HS 45-1 was selected from colonies which formed distinct clear zones on agar plate with emulsified polyethylene succinate (PES). The film of PES disappeared within 6 days in liquid cultures at 50°C. The strain HS 45-1 was also able to degrade poly (ε-carpolactone) (PCL) and poly (3-hydroxybutyrate) (PHB) films completely within 6 days in liquid cultures. Basing on the results of phynotypic characteristics, phylogenetic studies and DNA-DNA hybridization, strain HS 45-1 should be assigned to Micorbispora rosea subsp. taiwanensis.
KeywordsDegradation Polyethylene succinate Thermophile Micorbispora rosea subsp. taiwanensis
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This work is supported by the Ministry of Economic Affairs, R. O. C. (project no. 93-EC-17-A-17-R7-0525). We also thank Mr. Y. K. Lin for assistance in samples collection.
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