AI Article Synopsis
- A novel bacterium named Pseudomonas aeruginosa strain BCH was discovered in contaminated sediments and identified through gene sequencing.
- This strain is highly effective at breaking down the dye Direct Orange 39 across a broad range of temperatures and salinities, achieving up to 93.06% decolorization in just 45 minutes.
- Analytical methods confirmed that the bacterium biodegrades the dye, produces new metabolites, and shows non-toxic effects on plants like mung beans and wheat.
Article Abstract
A newly isolated novel bacterium from sediments contaminated with dyestuff was identified as Pseudomonas aeruginosa strain BCH by 16S rRNA gene sequence analysis. The bacterium was extraordinarily active and operative over a wide rage of temperature (10-60 degrees C) and salinity (5-6%), for decolorization of Direct Orange 39 (Orange TGLL) at optimum pH 7. This strain was capable of decolorizing Direct Orange 39; 50 mg l(-1) within 45 +/- 5 min, with 93.06% decolorization, while maximally it could decolorize 1.5 g l(-1) of dye within 48 h with 60% decolorization. Analytical studies as, UV-Vis spectroscopy, FTIR, HPLC were employed to confirm the biodegradation of dye and formation of new metabolites. Induction in the activities of lignin peroxidases, DCIP reductase as well as tyrosinase was observed, indicating the significant role of these enzymes in biodegradation of Direct Orange 39. Toxicity studies with Phaseolus mungo and Triticum aestivum revealed the non-toxic nature of degraded metabolites.
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| http://dx.doi.org/10.1007/s10532-009-9315-6 | DOI Listing |
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