Development of a highly efficient indigo dyeing method using indican with an immobilized β-glucosidase from Aspergillus niger

Jingyuan Song, Hiroyuki Imanaka, Koreyoshi Imamura, Kouichi Kajitani, Kazuhiro Nakanishi

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

A highly efficient method for dyeing textiles with indigo is described. In this method, the substrate, indican is first hydrolyzed at an acidic pH of 3 using an immobilized β-glucosidase to produce indoxyl, under which conditions indigo formation is substantially repressed. The textile sample is then dipped in the prepared indoxyl solution and the textile is finally exposed to ammonia vapor for a short time, resulting in rapid indigo dyeing. As an enzyme, we selected a β-glucosidase from Aspergillus niger, which shows a high hydrolytic activity towards indican and was thermally stable at temperatures up to 50-60°C, in an acidic pH region. The A. niger β-glucosidase, when immobilized on Chitopearl BCW-3001 by treatment with glutaraldehyde, showed an optimum reaction pH similar to that of the free enzyme with a slightly higher thermal stability. The kinetics for the hydrolysis of indican at pH 3, using the purified free and immobilized enzymes was found to follow Michaelis-Menten type kinetics with weak competitive inhibition by glucose. Using the immobilized enzyme, we successfully carried out repeated-batch and continuous hydrolyses of indican at pH 3 when nitrogen gas was continuously supplied to the substrate solution. Various types of model textiles were dyed using the proposed method although the color yield varied, depending on the type of textile used.

Original languageEnglish
Pages (from-to)281-287
Number of pages7
JournalJournal of Bioscience and Bioengineering
Volume110
Issue number3
DOIs
Publication statusPublished - Sep 2010

Fingerprint

Indican
Indigo Carmine
Glucosidases
Aspergillus niger
Textiles
Aspergillus
Dyeing
Enzymes
Immobilized Enzymes
Hydrolysis
Enzyme inhibition
Enzyme kinetics
Kinetics
Glutaral
Substrates
Ammonia
Glucose
Thermodynamic stability
Nitrogen
Color

Keywords

  • β-Glucosidase
  • Aspergillus niger
  • Immobilized enzyme
  • Indican
  • Indigo dyeing
  • Indoxyl

ASJC Scopus subject areas

  • Biotechnology
  • Applied Microbiology and Biotechnology
  • Bioengineering

Cite this

Development of a highly efficient indigo dyeing method using indican with an immobilized β-glucosidase from Aspergillus niger. / Song, Jingyuan; Imanaka, Hiroyuki; Imamura, Koreyoshi; Kajitani, Kouichi; Nakanishi, Kazuhiro.

In: Journal of Bioscience and Bioengineering, Vol. 110, No. 3, 09.2010, p. 281-287.

Research output: Contribution to journalArticle

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