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Natural dyes are increasingly widely used in the textile industry due to their non-toxic, harmless, and pollution-free properties. Recently, a group of researchers led by Dr. Jixun Zhan of Utah State University used E. coli to produce an indigo dye called indigoid. The researchers first used another type of bacteria to produce blue dye, but found that the final quantity was limited. Then they will carry out genetic transformation on Escherichia coli and finally successfully produce a large number of indigo dyes.

       Indigo dye can serve as a coloring agent in food, beverages, or cosmetics after further purification treatment. Researchers use E. coli to make indigo dye