Reactive dye bioaccumulation by Saccharomyces cerevisiae


Aksu Z.

PROCESS BIOCHEMISTRY, vol.38, no.10, pp.1437-1444, 2003 (Peer-Reviewed Journal) identifier identifier

  • Publication Type: Article / Article
  • Volume: 38 Issue: 10
  • Publication Date: 2003
  • Doi Number: 10.1016/s0032-9592(03)00034-7
  • Journal Name: PROCESS BIOCHEMISTRY
  • Journal Indexes: Science Citation Index Expanded, Scopus
  • Page Numbers: pp.1437-1444

Abstract

The growth and reactive dye bioaccumulation properties of Saccharomyces cerevisiae growing in molasses medium was investigated in a batch system as a function of dye, initial pH and initial dye concentration. Three diazo reactive textile dyes, Remazol Blue, Remazol Black B and Remazol Red. RB, were used in this study. Optimum pH value for bioaccumulation was determined as 3 for all the dyes tested. The maximum bioaccumulation capacity of S. cerevisiae was 88.5 mg g(-1) for Remazol Black B, 84.6 mg g(-1) for Remazol Blue and 48.8 mg g(-1) for Remazol Red RB. Higher bioaccumulation percentages were observed at lower concentrations of all dyes. In general, the increase in dye concentration inhibited the growth of yeast and caused a long lag period. Remazol Black B bioaccumulation by yeast at all dye concentrations studied was considerably higher among the dyes examined. (C) 2003 Elsevier Science Ltd. All rights reserved.