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Decolorization and Degradation of Malachite Green by A Strain of Achromobacter sp.(PDF)

Chinese Journal of Applied & Environmental Biology[ISSN:1006-687X/CN:51-1482/Q]

2009 04
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Decolorization and Degradation of Malachite Green by A Strain of Achromobacter sp.
LI Ni LI Zhang LI Mingxiong YANG Kun MA Han YANG Zhirong
College of Life Sciences, Sichuan University, Chendu 610064, China
malachite green Achromobacter sp. decolorization biodegradation

A strain, with strong decoloring capability for malachite green, was isolated from the malachite green contaminated soil and named as strain MGT3. It was identified as Achromobacter sp. by its morphological, physiological and biochemical characters and 16S rDNA sequence analysis. The results from the study on the decoloring conditions of strain MGT3 showed that the optimum temperature for decolorization was 30 ℃, and optimum pH was 7 under shaking decolorization situation. The best decolorization rate could be obtained at the initial concentration with malachite green less than 50 mg L-1 . Under the optimum conditions, the strain could remove 90.6% of the color of malachite green in 8 h treatment. The results of TLC, UV-VIS and HPLC showed that most of malachite green could be degraded by strain MGT3. Fig 8, Tab 1, Ref 26


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Last Update: 2009-08-27