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Adding colour to our lives, naturally
Keywords: Natural Indigo Dyeing,
Dyeing a pair of jeans requires 100 litres of water for the dyeing process and 15% of artificial synthetic dyes make their way into waterways as pollution. In this report The Hindu shows how centuries old indigo plants are being revived, many of them native to India. These plants contain 0.5% of Indican which exposed to oxygen produces the blue substance Indigotin. It is one of the few naturally based dyes for cotton fabrics. Other plants native to Idia also produce dyes that are less harmful to the environment. These dyes replace synthetic dyes made from petrochemical derivatives.
The work of Padma Shri Vankar, formerly of IIT Kanpur and her colleagues has helped identify and create dye extraction and dyeing methods for several plant species. This includes Nepal barberry of Arunachal, wild canna , Flame of the Forest from which colors for Holi festival are derived.
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