Toxicity potential of a textile dye toward the diazotrophic cyanobacterium Nostoc muscorum ISU
1994
Shukla, S.P. | Gupta, G.S.
The impact of graded concentrations [5, 10, 15, and 20 mg (L-1)] of Omega Chrome Red ME, a common dye used in woollen, carpet, and textile industries, on protein production, pigment content, and photosynthetic oxygen evolution in a diazotrophic cyanobacterium Nostoc muscorum ISU, was studied. All concentrations were found to be inhibitory, with lower concentrations [5 mg (L-1)] producing a negligible effect, while higher concentrations produced a dramatic decrease in the parameters observed. The highest concentration of dye tested [20 mg (L-1)] resulted in a decrease in protein, chlorophyll a, phycocyanin, and carotenoid content of 82.20. 82.69, 46.20 and 41% of control, respectively. Photosynthetic oxygen evolution was decreased by 83.50% of control at the highest dye concentration.
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