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Eco-friendly Indigo Dyeing using Baker’s Yeast: Reducing Power according to Alkaline Solution Type

  • Textile Coloration and Finishing
  • Abbr : Text. Color. and Finish.
  • 2019, 31(4), pp.249-257
  • DOI : 10.5764/TCF.2019.31.4.249
  • Publisher : The Korean Society Of Dyers And Finishers
  • Research Area : Engineering > Fiber Engineering > Dyeing Engineering
  • Received : November 21, 2019
  • Accepted : December 11, 2019
  • Published : December 27, 2019

Son Kyunghee 1,  Shin, Younsook 1

1전남대학교 의류학과

Accredited

ABSTRACT

Baker's yeast(Saccharomyces cerevisiae) was used as a biocatalyst for ecofriendly indigo dyeing and the reducing power of yeast according to the alkaline solution type was compared. NaOH solution, lye, and buffer solution were used as alkaline solutions. The reducing power(K/S value, oxidation/reduction potential(ORP), pH) was monitored according to the elapsed time including the initiation of reduction, peak reduction, and the end of reduction. In all alkaline solutions, it was confirmed that yeast can be used reducing agent in indigo reduction dyeing. The pH stability and reducing power of buffer solution was better than that of NaOH alone. Although, pH and ORP stability of the reduction bath in lye were better than that of buffer solution, K/S value in buffer solution was higher compared to lye. The reducing power was different depending on the starting pH of the dye bath, and it was better when starting at pH 10.70 than at pH 11.30. Fastnesses to washing, rubbing, and light were relatively good with above rating 4. There was no significant difference in colorfastness depending on the type of alkaline solutions.

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This paper was written with support from the National Research Foundation of Korea.
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