Bioactive compounds obtained fromCoriolus versicolor (Trametes versicolor (L.: Fr) Lloyd, 1920.) mushrooms cultivated
in a stirred-tank bioreactor were tested to determine their antimicrobial potential. Extracellular polysaccharides
were isolated from the fermentation broth by ethanol precipitation. A methanol extract was prepared
from mycelium. The cultivation conditions applied during the fermentation process provided for significant
biomass 6.63 ± 0.31 g dry weight L−1 and yield of extracellular polysaccharides (EPS) (0.74 ± 0.12 g L−1).
Microscopic analyses revealed that the mycelium grew predominately in the formof fluffy pellets. The methanol
extract demonstrated very good activity against all the tested Gram-positive bacteria. Bacillus spizizeni