RESEARCH PAPER
Bioremediation of melanoidin contamination in distillery effluent using Aspergillus brasiliensis
 
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1
Maharaja Ranjit Singh College of Professional Sciences, Indore (M.P.), India
 
2
Cyanobacterial Research Lab, Rani Durgavati University, Jabalpur (M.P.), India
 
3
Choithram College of Professional Studies, Indore (M.P.), India
 
4
Department of Biochemistry, Allahabad University, Allahabad (U.P.), India
 
5
Department of Microbiology, RamManohar Lohia Avadh University, Ayodhya (U.P.), India
 
6
Department of Biochemistry, RamManohar Lohia Avadh University, Ayodhya (U.P.), India
 
7
Department of Microbiology, St. Aloysius College Autonomous, Jabalpur (M.P.), India
 
 
Submission date: 2019-11-26
 
 
Final revision date: 2020-03-28
 
 
Acceptance date: 2020-03-30
 
 
Publication date: 2020-09-14
 
 
BioTechnologia 2020;101(3):205-213
 
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ABSTRACT
The current investigation is the first report of utilization of Aspergillus brasiliensis for the decolorization of melanoidin in distillery effluent. The effluent generated from alcohol distilleries is one of the most complex wastewater with a high biological oxygen demand (BOD) and other organic, inorganic, and toxic constituents. The effluent contains melanoidin, a dark brown compound, which is difficult to remediate by using conventional technologies. The disposal of spent wash in the natural environment is hazardous and can deteriorate land and water
resources. The decolorization of spent wash through physical and chemical methods remains unsuitable, and the
only alternative to decolorize spent wash is biological treatment. In the current study, three fungal strains were
isolated from the distillery waste and screened for their ability to decolorize melanoidin.The isolate RS2 exhibited
maximum decolorization of 83% and was identified as Aspergillus brasiliensis. Its optimum growth temperature
was 37EC, and the maximum efficiency was recorded after 120 h of incubation. Nutritional sources were investigated for the fungi showing the maximum decolorization of melanoidin, and starch and peptone were found to
be the best carbon and nitrogen sources, respectively. At 1.5% starch concentration and 1.5% peptone concentration, the decolorization level attained was 87.45% and 88.74%, respectively. A. brasiliensis exhibited a high potential to decolorize melanoidin. The decolorization percentage was high, which makes this fungus a potential
candidate for use at the industrial scale for the bioremediation of spent wash.
eISSN:2353-9461
ISSN:0860-7796
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