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Today, the World Health Organization has issued several mandatory warnings regarding the use of synthetic colorants, and some of them have even been banned. For this reason and because of the current consumer trend to use products of an organic origin, natural dyes have once more conquered the preference of users; in fact, in industrialized countries the clothes and garments coloured with natural dyes have a high market value. Indigo was a natural colorant, but it was also a medicine. As a colorant, Hernandez notes that it was used to dye clothes, fabrics, feathers, fibres and the hair, in black. As to its medicinal uses, many of them are of prehispanic tradition, and have persisted to modern times. The plant Indigofera tinctoria L." relates to the leguminous family and it is an annotinous shrub plant with the height of 1-1.5 meters, which is grows in the cultivated form. The plant does not have any wild forms, thus it is grown only in cultivated form. The leaves have the extended shape, and are complex odd-pinnate. Its flowers are of red colour, and they are located in the shape of cyst on the bud protruded from the source.
About the author
The author Dr.M.Kannan working as Assistant Professor in Zoology Department, V.H.N.Senthikumara Nadar College (Autonomous), Virudhunagar. Tamil Nadu, India. Totally 14 Years teaching experience and 10 years research experience. Principal Investigator in Two Major research projects funded by Department of Science and Techonology, Govermment of India
