Process for Separation and Purification of Natural Dyes
Implementing Organization
North-East Institute of Science & Technology (NEIST)
About
Demand for natural dyes in Textile, Food and Pharmaceutical industry has been increasing gradually for replacing synthetic dyes. Most of the presently used synthetic dyes are carcinogenic in nature, still they are used in Food, Pharmaceutical and Textile industries. CSIR-NEIST has developed a process for production of natural dyes with a purity of 99%. The process involves use of indigenously developed membrane and a green solvent.
Outcome / Output
Cost-effective process
, Environmentally benign process
, Colour stability of the dyes are more than 30 days at ambient and refrigerated conditions at pH 6-pH 7
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