Evaluation of the genotoxic potential of reactive black 5 solutions subjected to decolorizing treatments by three fungal strains

Daniel Martín Salas-Veizaga, Isabel Morales-Belpaire, Enrique Terrazas-Siles

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

The genotoxic potential of solutions of the textile dye "Reactive Black 5" that were subjected to decolorizing treatments with the fungal strains Coriolopsis polyzona MUCL33483, Penicillium sp. MUBA001 and Pycnoporus sp. MUBA002 was tested. The genotoxicity of the solutions was determined by evaluation of micronuclei formation in Vicia faba root cells and calculation of a damage index (MNID). Non-treated Reactive Black 5 solutions (50-1000ppm) caused a statistically significant increase in micronuclei formation and, by then, in damage index. Solutions of dye treated with C. polyzona MUCL33483 and Pycnoporus sp. MUBA002 showed color loss, probably due to enzymatic breakdown of the colorant, but maintenance or even an increase in genotoxicity. On the other hand, the Penicillium sp. strain MUBA001 caused decolorization of the dye, apparently by adsorption on mycelia, and, for solutions that initially contained 50ppm of colorant, an elimination of the genotoxicity was observed after three weeks of treatment.

Original languageEnglish
Pages (from-to)125-129
Number of pages5
JournalEcotoxicology and Environmental Safety
Volume89
DOIs
StatePublished - 1 Mar 2013

Bibliographical note

Funding Information:
The present work was partially funded by the scholarship program of the Instituto de Ecología, Universidad Mayor de San Andrés, La Paz . The authors are indebted to Gloria Rodrigo M.Sc., and Teresa Alvarez, Ph.D. for their helpful advice.

Keywords

  • Coriolopsis polyzona
  • Decolorization
  • Genotoxicity
  • Penicillum sp.
  • Pycnoporus sp.
  • Reactive Black 5

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