REPEATED-BATCH PRODUCTION OF LACCASE BY CERIPORIOPSIS SUBVERMISPORA
Keywords:Ceriporiopsis subvermispora, laccases, repeated-batch cultivation
The aim of this study was to set parameters of repeated-batch cultivation of Ceriporiopsis subvermispora for laccase production and evaluate the efficiency of this type of cultivation for production of selected enzyme. The suitable conditions for repeated-batch cultivation were designed on the base of study of batch cultivation of white-rot fungus C. subvermispora. C. subvermispora was cultivated in media with different concentration of casein hydrolysate as nitrogen source and glucose as carbon source. A suitable concentration of casein hydrolysate to stimulate the laccase production was 1.5 and 2.5 g/L. Laccase production was started at certain critical concentration of glucose (5 g/L). In order to improve laccase production by repeated-batch cultivation of C. subvermispora, glucose was tested in concentration 10 g/L and casein hydrolysate in concentration 1.5 g/L. During a repeated-batch cultivation was measured increase laccase activities from 177.8 to 266 U/L. It was also observed, the cultivation time needed to reach maximum laccase production was shortened to 10 days.