OCCURRENCE OF XYLANASE ACTIVITY AMONG BASIDIOMYCETOUS YEASTS

Out of 165 strains of basidiomycetous yeasts tested, which represented 50 species of 20 genera, 80% were capable of utilizing xylan as a sol e carbon source. These strains belonged to species of the genera Apiot richum, Atractogloea, Cryptococcus, Endophyllum, Filobasidium, Gymnosp orangium, Holtermania. Microstroma, Tremella, and Trichosporon. The ab ility to produce extracellular xylanases is especially widespread amon g the Cryptococcus species. Among the four C. podzolicus strains studi ed in detail, the maximum level of xylanase activity was revealed for strain VKM X-2.