• Journal of the Korean Society of Clothing and Textiles
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• v.26 no.3_4
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• pp.464-472
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• 2002

The aim of this study was to elucidate dyeability and antimicrobial activity of cotton fabrics dyed with Sophora Radix extracts according to various mordants. Dyes were extracted from Sophora Radix using ethanol. Then, cotton fabrics were dyed with extracts two times by post-mordanting method in which the extract was 60% (owf, the mordant was 3% (owf), L.R was 1:20, the temperature was 60~7$0^{\circ}C$, the time of dyeing was 60min., and the time of mordanting was 60min.. The dyeability was evaluated by surface color and color fastness. The skin microorganism was evaluated on S. sureus, B. subtilis, S. epidermidis, P. acnes, P. aeruginosa, E. coli, A. niger, C. albicans and T. mentagrophytes. The results are as follows; 1. When mordants were treated, surface color was 3.3Y to 0.1 GY in H (hue) value which indicated greenish yellow to yellow 2. The color fastness to perspiration, dry-cleaning, rubbing, and washing stain fabric showed 4~5 degree. The color fastness to light was improved to 4 degree by treatment of mordants. The color fastness to washing was 2 degree which was somewhat poor. 3. Cotton dyed with ethanol extracts was excellent on S. aureus, B. subtilis, S. epidermidis and p. antis. But that showed poor antibacterial activities on P. aeruginosa and E. coli such as gram negative baterials 4. Antibacterial activity of cotton fabrics dyed didn't be improved by treatment of mordant 5. Antifungal activity of cotton dyed with ethanol extracts was excellent on T. mentagrophytes. Especially, on T. mentagrophytes there was no growth of fungus during 72 hours in cotton dyed mordanting with SnCl$_2$.$_2$$H_2O$.