Capacity of Irpex lacteus and Pleurotus ostreatus for decolorization of chemically different dyes |
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Authors: | Novotný C Rawal B Bhatt M Patel M Sasek V Molitoris H P |
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Institution: | Institute of Microbiology, Academy of Sciences of the Czech Republic, Vídenská 1083, 14220 4, Prague, Czech Republic. novotny@biomed.cas.cz |
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Abstract: | The rate and efficiency of decolorization of poly R-478- or Remazol Brilliant Blue R (RBBR)-containing agar plates (200 μg g?1) were tested to evaluate the dye degradation activity in a total of 103 wood-rotting fungal strains. Best strains were able to completely decolorize plates within 10 days at 28 °C. Irpex lacteus and Pleurotus ostreatus were selected and used for degradation of six different groups of dyes (azo, diazo, anthraquinone-based, heterocyclic, triphenylmethane, phthalocyanine) on agar plates. Both fungi efficiently degraded dyes from all groups. Removal of RBBR, Bromophenol blue, Cu-phthalocyanine, Methyl red and Congo red was studied with I. lacteus also in liquid medium. Within 14 days, the following color reductions were attained: RBBR 93%, Bromophenol blue 100%, Cu-phthalocyanine 98%, Methyl red 56%, Congo red 58%. The ability of I. lacteus to degrade RBBR spiked into sterile soil was checked, the removal being 77% of the dye added within 6 weeks. The capacity of selected white rot fungal species to remove efficiently diverse synthetic dyes from water and soil environments is documented. |
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Keywords: | Dye decolorization Screening White rot fungi Ligninolytic enzymes Soil |
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