Violacein is a naturally occurring di-indole-pyrrole violet-blue colored pigment that possesses numerous biological functions such as antimicrobial, antiviral, anticancer, antiulcerogenic, anti-leishmanial, and enzyme modulation properties (Narsing et al. 2017). Violacein is biosynthesized by bacterial species such as Chromobacterium violaceum, Collimonas sp., Pseudoalteromonas sp., Pseudomonas aeruginosa, and Janthinobacterium sp. This natural pigment is used extensively in the cosmetic, food, pharmaceutical, and textile industries (Baiano 2014).
