Isolation of Stenotrophomonas pavanii DSM 25135(T) from Textile Effluent and Bioremediation of Carcinogenic Dye Basic Fuchsin in Free Cell vs Immobilized Cell System

IJEP 42(1): 25-32 : Vol. 42 Issue. 1 (January 2022)

Pallavi Yuvraj Babar1, Sharvari Amol Samant2 and Mansee Kapil Thakur1*

1. Mahatma Gandhi Mission Institute of Medical Sciences (MGMIHS), Central Research Laboratory, Department of Medical Biotechnology, Navi Mumbai – 410 209, Maharashtra, India
2. MGM Medical College, Department of Medical Biotechnology, Navi Mumbai – 410 209, Maharashtra, India


The study focuses on the ability of bacterial strain Stenotrophomonas pavanii DSM 25135(T) isolated from textile effluent to decolourize one of the commonly used textile colourants, Basic Fuchsin, which is a carcinogen. The isolated bacterial strain was screened for its biodegrading capability at high dye concentrations (0.05% and 0.1% w/v) and at different time intervals (24 hr, 48 hr, 72 hr, 96 hr and 120 hr). The experimental results showed that Stenotrophomonas pavanii has a high capability for decolourizing this triphenylmethane dye at a dye concentration of 0.1% w/v. The capability of this bacterial strain to degrade the dye was tested in the free cell system as well as in the immobilized cell system. The isolate showed enhanced degradation of the dye (90.4%) in the immobilized state within 120 hr. The isolated microbe can, therefore, be utilized as a pre-treatment tool in the decolourization step adopted by various textile industries.


Bioremediation, Biodegradation, Textile effluent, Water pollution, Decolourization, Basic Fuchsin, Immobilization, Calcium-alginate beads


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