Isolation and characterization of thermophilic benzothiophene-degrading Mycobacterium sp. |
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| Authors: | Watanapokasin Yuwadee Nuchfoang Siriporn Nilwarangkoon Sirinun Sarangbin Somsak Kakizono Toshihide |
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| Affiliation: | (1) Department of Biochemistry, Faculty of Medicine, Srinakarinwirot University, 10110 Bangkok, Thailand;(2) Faculty of Medical Technology, Rangsit University, 12000 Pathumthani, Thailand;(3) Junior Home School, Amphor Muang, 11000 Nonthaburi, Thailand;(4) Department of Fermentation Technology, Faculty of Engineering, Hiroshima University, 724 Higashi-Hiroshima, Japan |
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| Abstract: | A bacterial strain, SWU-4, capable of using benzothiophene (BT) as a sole carbon and energy source was isolated from a petroleum-contaminated site in Thailand and identified by 16S rRNA gene sequence analysis to be in the genus of Mycobacterium. The strain was Gram-positive, nonspore former, and grew at 50° C. Colonies of the strain on nutrient agar were rod-shaped, smooth with a convex surface, slightly mucoid, and yellow pigmented. The thermophilic Mycobacterium sp. strain SWU-4 rapidly degraded 2% (w/v) BT at 50°C. Interestingly, this strain was able to degrade a wide variety of organosulfur compounds including thiophene, bromo(α)thiophene, and 3-methylthiophene in liquid minimum medium at 50°C, which will be beneficial for industrial applications. |
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| Keywords: | Thermophilic Mycobacterium sp. organosulfur-degradation 16S rDNA |
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