Biodegradation of malachite green by Kocuria rosea MTCC 1532

Ganesh Parshetti, Satish Kalme, Ganesh Saratale, Sanjay Govindwar

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307 Scopus citations

Abstract

Malachite green (50 mg/L) was completely decolorized under static anoxie condition within 5 h by bacteria Kocuria rosea MTCC 1532; however decolorization was not observed at shaking condition. K. rosea have also shown decolorization of azo, triphenylmethane and industrial dyes (cotton blue, methyl orange, reactive blue 25, direct blue-6, reactive yellow 81, and red HE4B). Semi-synthetic media containing molasses, urea and sucrose have shown 100, 91, 81% decolorization respectively. Induction in the activities of malachite green reductase and DCIP reductase was observed during MG decolorization suggesting their involvement in the decolorization process. UV-Visible absorption spectrum, HPLC and FTIR analysis showed degradation of MG. Toxicity study revealed the degradation of MG into non-toxic products by K. rosea.

Original languageEnglish
Pages (from-to)492-498
Number of pages7
JournalActa Chimica Slovenica
Volume53
Issue number4
StatePublished - 2006

Keywords

  • Decolorization
  • HPLC
  • K. rosea
  • Malachite green reductase
  • Toxicity

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