World Journal of Microbiology and Biotechnology

, Volume 23, Issue 9, pp 1239–1244 | Cite as

Decolorization of Acid Red 27 and Reactive Red 2 by Enterococcus faecalis under a batch system

  • Widhi Handayani
  • V. Irene Meitiniarti
  • Kris Herawan Timotius
Full – length paper


The objectives of this study were to investigate: (1) the capacity of Enterococcus faecalis on the decolorization of the azo dyes Acid Red 27 and Reactive Red 2; and (2) the growth characteristics of E. faecalis on those dyes. E. faecalis was able to decolorize Acid Red 27 and Reactive Red 2 effectively. High decolorization efficiency (95–100%) was achieved within 3 h of incubation for Acid Red 27, and 12 h for Reactive Red 2, at room temperature, neutral pH, static and non-aerated condition. Growth characteristics of E. faecalis on azo dyes, which were indicated by cell growth rate, biomass production, and growth yield, was worse than the control. E. faecalis grew better on Acid Red 27 rather than Reactive Red 2.


Acid Red 27 Azo dyes Batch growth Decolorization Enterococcus faecalis Reactive Red 2 


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Copyright information

© Springer Science+Business Media B.V. 2007

Authors and Affiliations

  • Widhi Handayani
    • 1
  • V. Irene Meitiniarti
    • 2
  • Kris Herawan Timotius
    • 3
  1. 1.Graduate Program of BiologySatya Wacana Christian UniversitySalatigaIndonesia
  2. 2.Faculty of BiologySatya Wacana Christian UniversitySalatigaIndonesia
  3. 3.Chemistry Section, Faculty of Science & MathematicsSatya Wacana Christian UniversitySalatigaIndonesia

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