title: Environmental assessment of the degradation potential of mushroom fruit bodies of Pleurotus ostreatus (Jacq.: Fr.) P. Kumm. towards synthetic azo dyes and contaminating effluents collected from textile industries in Karnataka, India.
abstract: Pleurotus ostreatus (Jacq.: Fr.) P. Kumm. is one of the edible mushrooms currently gaining attention as environmental restorer. The present study explores the potential of P. ostreatus (Jacq.: Fr.) P. Kumm. in degradation of textile dyes and effluents. The mushroom cultivation was carried out using paddy bed as substrate. The fully grown mushroom fruit bodies were used as a bioremediation agent against two industrially important azo dyes such as nylon blue and cotton yellow and few effluents collected from various textile industries in Karnataka, India. The ideal growth parameters such as temperature, pH, and dye concentrations for effective degradation were carried out. One of the main enzymes, laccase, responsible for biodegradation, was partially characterized. The degradation was found to be ideal at pH 3.0 and temperature at 26-28 °C. This study demonstrated a percentage degradation of 78.10, 90.81, 82.5, and 64.88 for dye samples such as nylon blue (50 ppm), cotton yellow (350 ppm), KSIC effluents, and Ramanagar effluents at 28 °C within 15th days respectively in comparison with other temperature conditions. Similarly, a percentage degradation of 35.99, 33.33, 76.13 and 25.8 for nylon blue (50 ppm), cotton yellow (350 ppm), Karnataka Silk Industries Corporation (KSIC) effluents and Ramnagar effluents were observed at pH 3.0 within 15 days, respectively (p < 0.05). Thus, the current study concluded that the utilization of P. ostreatus (Jacq.: Fr.) P. Kumm. at ideal environmental conditions is a cost-effective and eco-friendly approach for the degradation of various azo dyes and textile effluents which are harmful to the ecosystem.
authors.affiliation: Department of Biotechnology Engineering, Dayananda Sagar Institutions, Bangalore, 560078, India. sinoshskariya@gmail.com.|Visvesvaraya Technological University, Belagavi, Karnataka, India. sinoshskariya@gmail.com.
authors.forename: Sinosh
authors.initials: S
authors.lastname: Skariyachan
authors.affiliation: Department of Biotechnology Engineering, Dayananda Sagar Institutions, Bangalore, 560078, India.|Visvesvaraya Technological University, Belagavi, Karnataka, India.
authors.forename: Apoorva
authors.initials: A
authors.lastname: Prasanna
authors.affiliation: Department of Biotechnology Engineering, Dayananda Sagar Institutions, Bangalore, 560078, India.|Visvesvaraya Technological University, Belagavi, Karnataka, India.
authors.forename: Sirisha P
authors.initials: SP
authors.lastname: Manjunath
authors.affiliation: Department of Biotechnology Engineering, Dayananda Sagar Institutions, Bangalore, 560078, India.|Visvesvaraya Technological University, Belagavi, Karnataka, India.
authors.forename: Soujanya S
authors.initials: SS
authors.lastname: Karanth
authors.affiliation: Department of Biotechnology Engineering, Dayananda Sagar Institutions, Bangalore, 560078, India.|Visvesvaraya Technological University, Belagavi, Karnataka, India.
authors.forename: Ambika
authors.initials: A
authors.lastname: Nazre
mesh_terms: D001391:Azo Compounds / Q000378:metabolism* / Q000633:toxicity; D001673:Biodegradation, Environmental; D004396:Coloring Agents / Q000378:metabolism* / Q000633:toxicity; D004784:Environmental Monitoring; D007194:India; D007220:Industrial Waste / Q000032:analysis*; D020076:Pleurotus / Q000378:metabolism*; D013696:Temperature; D013783:Textile Industry; D013784:Textiles; D014874:Water Pollutants, Chemical / Q000378:metabolism* / Q000633:toxicity
chemical_list: D001391:Azo Compounds; D004396:Coloring Agents; D007220:Industrial Waste; D014874:Water Pollutants, Chemical
keywords: Bioremediation agent; Eco-friendly approaches; Edible mushroom; Ideal environmental conditions; Pleurotus ostreatus (Jacq.: Fr.) P. Kumm; Textile azo dyes
references.citation: ScientificWorldJournal. 2015;2015:371625
references.pmid: 25685837
references.citation: J Environ Biol. 2012 Mar;33(2):167-71
references.pmid: 23033675
references.citation: Biomed Res Int. 2013;2013:180156
references.pmid: 23841054
references.citation: J Chromatogr A. 2008 Oct 24;1208(1-2):223-31
references.pmid: 18778834
references.citation: EXCLI J. 2015 Jan 29;14:158-74
references.pmid: 26417357
references.citation: Braz J Microbiol. 2014 Oct 09;45(3):1055-63
references.pmid: 25477943
references.citation: Environ Technol. 2007 Oct;28(10):1073-8
references.pmid: 17970513
references.citation: Biomed Res Int. 2015;2015:536745
references.pmid: 25722980
references.citation: J Environ Health Sci Eng. 2015 Apr 25;13:38
references.pmid: 25932329
references.citation: Enzyme Res. 2011;2011:217861
references.pmid: 21755038
references.citation: Enzyme Res. 2010 Nov 01;2010:905896
references.pmid: 21052547
references.citation: Appl Environ Microbiol. 2000 Mar;66(3):920-4
references.pmid: 10698752
references.citation: Iranian J Environ Health Sci Eng. 2012 Dec 23;9(1):33
references.pmid: 23369285
references.citation: Acta Biochim Pol. 2012;59(3):407-12
references.pmid: 22946027