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Title of Journal: World J Microbiol Biotechnol

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Abbravation: World Journal of Microbiology and Biotechnology

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Springer Netherlands

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DOI

10.1007/bf00322339

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1573-0972

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Nicotine degradation by two novel bacterial isolat

Authors: Meizhen Wang Guiqin Yang Xin Wang Yanlai Yao Hang Min Zhenmei Lu
Publish Date: 2010/11/25
Volume: 27, Issue: 7, Pages: 1633-1640
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Abstract

Two novel nicotinedegrading bacterial strains were isolated from tobacco waste and identified as Acinetobacter sp TW and Sphingomonas sp TY based on morphology physiological and biochemical tests Biolog analysis and 16S rDNA sequencing The 16S rDNA sequences have been deposited in GenBank under the accession numbers FJ753401 for TW and FJ754274 for TY The best culture conditions for nicotine degradation were 25–37°C and pH 70–80 for strain TW and 25–30°C and pH 60–70 for strain TY Under the best conditions the cell growth and nicotinedegradation kinetics of the two isolates were assessed and 10 g/l nicotine was completely degraded within 12 and 18 h for TW and TY respectively Moreover the presence of four widelyused commercial neonicotinoid insecticides in the medium had no effects on nicotine degradation by TW among the four tested neonicotinoids only thiamethoxam significantly delayed nicotine degradation by TY TW and TY were also able to degrade selected neonicotinoids This is the first report of nicotine degradation by Acinetobacter sp and Sphingomonas sp This study showed that these two newly isolated bacteria may be suitable for the disposal of tobacco waste and the reduction of nicotine in tobacco leavesThis work was financially supported by the National Key Science and Technology Project Water Pollution Control and Treatment No2008ZX07101006 863 High Technology Program No 2007AA10Z409 Innovative Research Team in Higher Educational Institutions of Zhejiang Province T200912 and Open Fund of Key Lab of Environmental Pollution Control Technology in Zhejiang Province

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