Characteristics and Dyeing Properties of Green Tea Colorants(Part I) -Components and characteristics of Green Tea Colorants-

녹차색소의 특성과 염색성 (제1보) -녹차색소의 성분과 특성-

  • Shin, Youn-sook (Dept. of Clothing and Textiles, Chonnam National University) ;
  • Choi, Hee (Dept. of Clothing and Textiles, Chonnam National University)
  • 신윤숙 (전남대학교 의류학과) ;
  • 최희 (전남대학교 의류학과)
  • Published : 1999.01.01

Abstract

Colorants in green tea were extracted freeze-dried and analyzed to investigate the possibility of using as a natural dye. Fractionation of the colorants was carried out by column chromatograpy. Colorants in green tea were eluted into five fractions. All the fractions except fraction F2 showed absorption peakat 280nm. Fraction f2 showed absorption peak at 270nm and broad peak at 350nm, From the IR analysis it is speculated that fractions F2-F5 having similar stucture but different molecular weight are catechis. Silk fabrics dyes with fractions F1-F4 showed yellowish red color while sample dyed with fraction F5 showed red color. The colorants from green tea infusion was applied to silk wool nylon cotton and rayon fabrices. It showed relatively good affinity to protein and polyamide fibers bur low affinity to cellulose and regenerated cellulose fibers.

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