Violacein biotransformation by basidiomycetes and bacteria

Aims: The biotransformation study of the pigment (violacein) produced by Ch romobacterium violaceum, was verified by its decolorization utilizing six d ifferent organisms in liquid and solid media. Methods and Results: Lentinus edodes showed the fastest violacein decoloriz ation (8th d) in solid medium whereas in a liquid medium, violacein was rap idly decolorized in 2 h by Azotobacter vinelandii. Adsorption experiments i ndicated no significant contribution for the decolorization process for all organisms in both media. Conclusions, Significance and Impact of the Study: The results showed poor lignin peroxidase activity in both media but manganese peroxidase and lacca se activity varied, according to the organism used. Siderophores presence w as also detected in all organisms mainly in the liquid medium experiment.