Biosynthetic indigo dye for denim is chemical and petroleum-free - Springwise

The dye has potential for further applications in food and cosmetics

Indigo genes dyeing to make jeans cleaner and greener

How bacteria can replace oil to make denim's indigo dye

How bacteria can replace oil to make denim's indigo dye

The surprising science of blue jeans - CNET

Tinctorium Wants to Disrupt Indigo Production – Sourcing Journal

An evaluation of the properties of denim dyed with sulphur dyeing

Production of bio-indigo dye by surmounting its physical and

Indigo genes dyeing to make jeans cleaner and greener

What is indigo? Denim FAQ answered by Denimhunters