Potential of utilizing aged bark-and-wood waste through mycological degradation as a biotechnological process

Our composition analysis of bark-and-wood waste from a warehouse in the Syktyvkar city revealed a high nutrient content, no toxicity, and the potential for using xylotrophic basidiomycetes for solid state fermentation. Three strains of xylotrophic basidiomycetes ( Trametes hirsuta , Fomitopsis pinicola , and Laetiporus sulphureus ) were evaluated for their growth rate, growth index, yield of hardly hydrolysable polysaccharides, and cellulase yield when cultivated on the bark-wood waste. The results showed that T. hirsuta exhibited the highest growth rate (4.95– 6.2 mm/day), growth factor (60–77), and the maximum yield of hardly hydrolysable polysaccharides (30.7%) in 30 days. Furthermore, the maximum cellulase yield was 1330 unit/g.