New life for an old fiber: Attributes and advantages of naturally colored cotton

Naturally pigmented cotton is not new, It has grown in earthy shades of gre en, brown, and red for thousands of years. The cultivars can be grown using organic or conventional farming methods, but both offer ecological advanta ges since chemical dyeing is unnecessary. Naturally colored cotton can offe r unique attributes and selective advantages over common white varieties. S ome colored fibers are shorter, weaker, and finer than white cotton. These characteristics contribute to their unique appearance, unusual softness, fl exibility, and luster. Shortcomings of the fibers may include color variati on, cost, and limitations associated with processing and performance. Gover nment researchers are presently developing patented and proprietary methods to convert existing colored fibers into superior yarns and fabrics. The ou tcome of this research could be applicable to inferior grades of white cott on with broad economic implications.