Biodegradation and decolorization of azo dyes by adherent Staphylococcus lentus strain

A Staphylococcus lentus strain, isolated from Red sea water, was tested for decolorization capacity of Congo red, Evans blue, and Eriochrome Black T azo dyes. Biodegradation (100 mgl−1) of these dyes was studied within 24 h in Mineral Salt Medium solution containing 0.10 % (w/v) yeast extract and 7 mM of glucose at a pH of 7.2 and a temperature of 37 °C. Using a 2.2 × 106 CFU/mL inoculum size, S. lentus was able to decolorize these azo dyes with different degree. The staphylococcal biomass achieves approximately 100 % decolorization of Congo red and Eriochrome Black T by the end of treatment. FTIR and UV–Vis analyses confirm biodegradation potential of the tested strain. Moreover, the phytotoxicity of the dye solutions resulting from this treatment shows lower toxic nature compared to untreated solution of the respective dyes.

• Publication year

  2016

• Venue

  Applied Biological Chemistry

• Publication date

  2016-02-15

• Fields of study

  Biology, Chemistry, Environmental Science

• Identifiers
  DOI 10.1007/s13765-016-0169-4
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• Biodegradation products of the azo dyes treated by S. lentus exhibit lower phytotoxicity compared to the respective untreated dye solutions.

  Confidence 0.90

  All you need is Python (5d7gwfm5zu) extractionAnonymous (12632b8b5f) review
• Approximately 100% decolorization of Congo red and Eriochrome Black T is achieved by S. lentus biomass under the tested conditions.

  Confidence 0.93

  All you need is Python (5d7gwfm5zu) extractionAnonymous (12632b8b5f) review
• Staphylococcus lentus isolated from Red Sea water decolorizes Congo red, Evans blue, and Eriochrome Black T azo dyes to varying degrees within 24 hours under the tested conditions.

  Confidence 0.95

  All you need is Python (5d7gwfm5zu) extractionAnonymous (12632b8b5f) review

• azo dye decolorization

  process

  The removal of color from azo dyes through biological degradation by a microbial strain.

  Aliases: azo dye biodegradation

  All you need is Python (5d7gwfm5zu) extractionAnonymous (12632b8b5f) review
• congo red

  chemical compound

  A synthetic azo dye used as a substrate to assess decolorization by S. lentus.

  All you need is Python (5d7gwfm5zu) extractionAnonymous (12632b8b5f) review
• eriochrome black t

  chemical compound

  A synthetic azo dye used as a substrate to assess decolorization by S. lentus.

  All you need is Python (5d7gwfm5zu) extractionAnonymous (12632b8b5f) review
• evans blue

  chemical compound

  A synthetic azo dye tested for decolorization by S. lentus.

  All you need is Python (5d7gwfm5zu) extractionAnonymous (12632b8b5f) review
• ftir

  analytical method

  Fourier-transform infrared spectroscopy used to confirm structural changes indicating biodegradation of the azo dyes.

  Aliases: FTIR analysis

  All you need is Python (5d7gwfm5zu) extractionAnonymous (12632b8b5f) review
• phytotoxicity

  outcome

  The toxicity of dye solutions to plants, compared before and after biodegradation treatment.

  All you need is Python (5d7gwfm5zu) extractionAnonymous (12632b8b5f) review
• staphylococcus lentus

  organism

  A bacterial strain isolated from Red Sea water evaluated for its capacity to biodegrade azo dyes.

  Aliases: S. lentus

  All you need is Python (5d7gwfm5zu) extractionAnonymous (12632b8b5f) review
• uv-vis analysis

  analytical method

  Ultraviolet-visible spectroscopy used to confirm biodegradation of the tested azo dyes.

  Aliases: UV–Vis analysis

  All you need is Python (5d7gwfm5zu) extractionAnonymous (12632b8b5f) review

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