Violacein biotransformation by basidiomycetes and bacteria.
OBJECTIVE
The biotransformation study of the pigment (violacein) produced by Chromobacterium violaceum, was verified by its decolorization utilizing six different organisms in liquid and solid media.


RESULTS
Lentinus edodes showed the fastest violacein decolorization (8th d) in solid medium whereas in a liquid medium, violacein was rapidly decolorized in 2 h by Azotobacter vinelandii. Adsorption experiments indicated no significant contribution for the decolorization process for all organisms in both media.


CONCLUSIONS
The results showed poor lignin peroxidase activity in both media but manganese peroxidase and laccase activity varied according to the organism used. Siderophores presence was also detected in all organisms mainly in the liquid medium experiment.
Bromberg
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Institute of Chemistry, Biological Chemistry Laboratory, Universidade Estadual de Campinas (UNICAMP), C.P. 6154, C.E.P. 13083-970, Campinas - São Paulo, Brazil.
Durán
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D000327:Adsorption; D001419:Bacteria / Q000201:enzymology / Q000378:metabolism*; D001487:Basidiomycota / Q000201:enzymology / Q000378:metabolism*; D001673:Biodegradation, Environmental; D004396:Coloring Agents / Q000378:metabolism*; D003470:Culture Media / Q000378:metabolism; D007211:Indoles / Q000378:metabolism*; D042845:Laccase; D010088:Oxidoreductases / Q000378:metabolism; D010544:Peroxidases / Q000378:metabolism; D017262:Siderophores / Q000032:analysis; D013997:Time Factors
D004396:Coloring Agents; D003470:Culture Media; D007211:Indoles; D017262:Siderophores; D010088:Oxidoreductases; D042845:Laccase; D010544:Peroxidases; C042858:lignin peroxidase; C051129:manganese peroxidase; C063155:violacein