Enhanced Biodecolorization of Reactive Red 152 using Polyporus rubidus (MTCC 140): A Batch Culture Study
N. Sangeetha*, S. Natarajan and T. G. Nagulan
Department of Biochemistry, Kongu Arts and Science College, Nanjanapuram, Erode - 638052, Tamil Nadu, India
*Corresponding author
Abstract:
The discharge of dye-containing effluents from textile industries poses serious environmental and ecological concerns due to their toxicity, persistence, and aesthetic impact on receiving water bodies. In the present study, the biodecolorization potential of the white-rot fungus Polyporus rubidus (MTCC 140) was evaluated using Reactive Red 152 as a model textile dye under batch culture conditions. The effects of key operational parameters, including mycelial age, carbon source concentration, temperature, pH, and initial dye concentration, were systematically optimized to enhance decolorization efficiency. Maximum decolorization of 86% was achieved at 35 °C, pH 6.0, glucose concentration of 2 mg L?¹, initial dye concentration of 100 mg L?¹, and mycelial age of 6 days. Decolorization efficiency decreased at higher dye concentrations, indicating substrate inhibition. The results demonstrate the strong potential of P. rubidus for the biological treatment of dye-laden wastewater and highlight its applicability for eco-friendly remediation strategies.
Keywords: Biodecolorization; Reactive Red 152; White-rot fungus; Polyporus rubidus; Textile wastewater
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How to cite this article:
Sangeetha, N., S. Natarajan and T. G. Nagulan. 2026. Enhanced Biodecolorization of Reactive Red 152 using
Polyporus rubidus (MTCC 140): A Batch Culture Study.
Int.J.Curr.Microbiol.App.Sci. 15(1): 165-169. doi:
https://doi.org/10.20546/ijcmas.2026.1501.019
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National Academy of Agricultural Sciences (NAAS) 
