Studies on the degradation of wood sawdust by Lentinus squarrosulus (Mont.) Singer

Abstract

Lentinus squarrosulus (Mont.) Singer, a basidiomycete also known as a white rot fungi, was 
immobilized on sodium alginate and tested for the effectiveness to degrade wood sawdust (WSD). 
Untreated and 0.1 M HCl- pretreated WSD samples were separately reacted in a micro-carrier bioreactor 
(CBR) and the extent of degradation to form protein, glucose and ethanol was investigated. 
Pretreatment enhanced the production of both proteins and ethanol by average value of 72.0% over 
untreated WSD samples, after hydraulic retention time of 72 h. The maximum production of protein 
observed was 0.94 mg/ml-reaction volume and that of ethanol was 6.6 mg/ml-reaction volume, whereas 
glucose concentration fluctuated due to interconversion to ethanol. This report shows that L. 
squarrosulus (Mont.) Singer have the potentials of degrading WSD samples to important chemical 
compounds that are not hazardous to the environment.