Enzyme activities in the spent mushroom substrate from Pleurotus ostreatus

Spent mushroom substrate (SMS) from Pleurotus ostreatus is residue of cultivation that known to have lignocellulolytic enzyme activity in it. Enzyme activities provides information on evidence fungi converting complex substrates simple ones as nutrients for them. In this study, the was found cellulase, lignin peroxidase, and protease. The samples used consisted three SMS were collected Padang Panjang (sample 1), 2), Payakumbuh 3). Research conducted determine compare protease, peroxidase enzymes evaluated potential source also levels reducing sugar, ph, C/N ratio. Maximum 0.179 U/g 3584.229 LiP, 1400 U/g. value range 16,459 mg/ml 19,845 5.78 8.08 pH 24.053% 81.345% result reveal P. a good could be alternative circular economy concept.