Biodecolorization and biodegradation potential of recalcitrant triphenylmethane dyes by Coriolopsis sp. isolated from compost

• Published in: Journal of environmental management Vol. 150; pp. 274 - 280
• Main Authors: Chen, Si Hui, Yien Ting, Adeline Su
• Format: Journal Article
• Language: English
• Published: England Elsevier Ltd 01.03.2015; Academic Press Ltd
• Subjects: Biodegradation; Biodegradation, Environmental; Biomass; Coloring Agents - chemistry; Coloring Agents - metabolism; Composting; Coriolopsis sp; Decoloring; Dye decolorization; Dyes; EFB compost; Environment management; Environmental change; Environmental degradation; Environmental management; Fungi; Fungi - metabolism; Humans; Lignin; Palm; Palm Oil; Plant Oils; Reductases; Soil; Sorption; Triphenylmethane dyes; Trityl Compounds - metabolism; Biodegradation; Coriolopsis sp; EFB compost; Triphenylmethane dyes; Dye decolorization
• ISSN: 0301-4797; 1095-8630
• DOI: 10.1016/j.jenvman.2014.09.014

Triphenylmethane dyes (TPM) are recalcitrant colorants brought into the environment. In this study, a lesser-known white rot fungus Coriolopsis sp. (1c3), isolated from compost of Empty Fruit Bunch (EFB) of oil palm, was explored for its decolorization potential of TPM dyes. The isolate 1c3 demonstrated good decolorization efficiencies in the treatment of Crystal Violet (CV; 100 mg l−1), Methyl Violet (MV; 100 mg l−1) and Cotton Blue (CB; 50 mg-1), with 94%, 97% and 91%, within 7, 7 and 1 day(s), respectively. Malachite Green (MG; 100 mg l−1) was the most recalcitrant dye, with 52% decolorization after 9 days. Dye removal by 1c3 was presumably via biosorption, whereby the process was determined to be influenced by fungal biomass, initial dye concentrations and oxygen requirements. Biodegradation was also a likely mechanism responsible for dye removal by 1c3, occurred as indicated by the reduction of dye spectra peaks. Detection of laccase, lignin peroxidase and NADH-DCIP reductase activities further substantiate the possible occurrence of biodegradation of TPM dyes by 1c3. [Display omitted] •Lesser-known white rot fungi Coriolopsis sp. showed decolorization of TPM dyes.•First report of biodegradation of Coriolopsis sp. on TPM dyes.•Decolorization is influenced by biomass, dye concentrations and oxygen.•Potential use of azo-degrader Coriolopsis sp. for TPM dyes.