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V.35,no.4,Dec 2023 |
https://doi.org/10.5764/TCF. |
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Journal |
Textile Coloration and Finishing |
Year / Vol., Issue, Month |
2019 / V.31,no.4,Dec |
Title |
Eco-friendly Indigo Dyeing using Baker¡¯s Yeast: Reducing Power according to Alkaline Solution Type |
Authors |
Kyunghee Son and Younsook Shin* |
Institution/Affiliations |
Chonnam National University |
Pages/Total page |
pp.249 ~ 257 / 9 |
Language |
Korean |
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. |
Keywords |
baker's yeast(Saccharomyces cerevisiae), indigo reduction dyeing, alkaline
solution, reducing power, colorfast |
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