Our research was focused on pectinolytic abilities of 5 Geotrichum candidum strains. We compared activities of extra- and intracellular PG (polygalacturonase) (nKat/mg protein) in mineral media (2 variants) and barley grain. Generally, most of the strains presented higher extracellular than intracellular PG activity. Pectin was the best carbon source for G. candidum Gc1, D2 and B1, which could suggest the inductive characteristic of G candidum enzymes. Only one strain (Sc12) differed from others, because its highest biosynthesis of intracellural PG was observed with glucose as a carbon source. This could be due to constitutive characteristic of he enzymes. PG biosynthesis on barley grain confirm that G.candidum strains could be useful in malting.

37-42