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Natural Dyes in Textile Applications - Chemical Characteristics and Research Trends -

A few important natural dyes in textile applications are reviewed in terms of their chemical characteristics and historical backgorunds and research trends in Korea. Japan, and other countries. From this review, proposals for the future research are made as follows. First, as fundamental studies to investigate chemical characteristics of main colorants and their relationships to dyeability, it is necessary to analyze relationships between colorants and their glucosides, interaction between two or more colorants, and their relationships with other components and applicability as dyes. Second, broad interdisciplinary researches are required to establish colorant extraction and separation techniques, and simple and reproducible dyeing techniques. In addition to this, more efforts are needed to improve dye fixation and colorfastness, and to solve environmental pollution caused by mordants used. Third, fundamental researches should be activated to create high value-added products for differentiation.