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Bacterial strains isolated from dye-contaminated sludge decolorized a toxic azo dye, namely, methyl red (MR). Methyl red is used in the methyl red test (MR test), used to identify bacteria producing stable acids by mechanisms of mixed acid fermentation of glucose
P.K. Wong,; P.Y. Yuen. Decolorization and biodegradation of methyl red by Klebsiella pneumoniae RS-13. Water Research. 1996, 30 (7) ,1736-1744.
J.P. Jadhav,; G.K. Parshetti,; S.D. Kalme, S.P. Govindwar. Decolourization of azo dye methyl red by Saccharomyces cerevisiae MTCC 463. Chemosphere. 2007, 68 (2),394-400.
Acid-base indicator: pH 4.2 - 6.2.