Fermentation in Minimal Media and Fungal Elicitation Enhance Violacein and Deoxyviolacein Production in Two Janthinobacterium Strains

Violacein and its biosynthesis by-product deoxyviolacein are valuable natural pigments with different biological activities. Various efforts have been made to enhance violacein production in microbes. However, the effect of culture media, agitation, fungal elicitation on Janthinobacterium has not evaluated. In this study, eight by Agaricus bisporus deoxviolacein agaricidamnosum DSM 9628 lividum 1552 were examined. The results showed that produced at high-levels when is cultivated minimal media such as Davis broth glycerol (DMBgly), shipworm basal medium (SBM), MM9 media. A 50-fold increase was observed these compared cultivation Luria–Bertani (LB), nutrient (NB), King’s B (KB). Agitation reduces production, while decreases but increases cultured KB SBM, modified SBM (MSBM). An antibacterial assay using various pathogenic bacteria extracted from effective against both Gram-positive Gram-negative pathogens, confirming their functionality agents. findings suggest might invoke a stress response, enhancing Janthinobacterium.