Abstract:With the ligninase activity as anindex

three model compounds

ferulic acid

pcoumaric acid and sinapic acid

were used as substrates to study the characteristics of Aspergillus fumigatus G13induced enzyme production by adding cellulose and glucose and changing theculture mode The results showed that the ability of producing enzymes in shakeflask culture was 2-5 times higher than that in static culture The lignin modelcompound was used as inducer alone

and the induction effect of sinapic acidwas the strongest The maximum activities of LiP

Lac and MnP were 2408

2167and 11078U/L

respectively Carboxymethyl cellulose (CMC)

microcrystallinecellulose (MCC) and glucose as cosubstrates all promoted the induction abilityof the three model compounds to the strain Among them

glucose was the mostprominent (about 138-534 times higher than the original enzyme activity)

andCMC was better than microcrystalline cellulose Cellulose model compounds andglucose played a synergistic role in the induction of enzyme production