Abstract
Trichophyton soudanense and Trichophyton mentagrophyte were isolated from the rice mill environment, cultured, and used singly and as co-culture in the treatment of measure quantities of pre-heated rice husk. Carboxymethyl cellulase activity of 57.61μg/ml/min was optimum for T. mentagrophyte-treated rice husk crude enzymes at 50°C and 80°C, respectively. The duration of 120h gave the highest CMCellulase activity of 75.84μg/ml/min for crude enzyme of T. mentagrophyte heat-pretreated rice husk. The duration of 96h gave maximum activity of 58.21μg/ml/min for crude enzyme of T. soudanense heat-pretreated rice husk. Highest CMCellulase activities of 67.02μg/ml/min and 69.02μg/ml/min at pH of 5 were recorded for crude enzymes of monocultures of T. soudanense (TS) and T. mentagrophyte (TM) heat-pretreated rice husk. Heating before treatment with T. mentagrophyte gave 44.50±10.90 cellulose as maximum, total lignin value of 28.90±1.80 from co-culture of T. soudanense and T. mentagrophyte (TS+TM), hemicellulose content of 30.50±2.12 (%±SEM) from pre-heated rice husk treated with T. soudanense (TS), carbohydrate content of 16.79±9.14, and reducing and non-reducing sugar values of 2.66±0.45 and 14.13±8.69 were all obtained from for pre- heated rice husk treated with T. mentagrophyte (TM). The pre-heated rice husk treated with T. mentagrophyte (TM) fermented with palm wine yeast gave bioethanol value of 11.11±0.21 (%±standard deviation) as the highest yield.
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