The qualitative composition and percent ratio of monosugars in the cell biomass of 101 strains of 5 Candida species and 7 strains of Torulopsis species were determined. It was shown that the major carbohydrate components of the cell biomass of all the Candida species were arabinitol, mannose, fructose, galactose, glucose, sugar alcohol (mannitol) and myoisonitol. C. albicans and C. tropicalis had the highest levels of arabinitol. C. krusei, C. kefyr and T. glabrata contained only traces of arabinitol. The results of the studies indicated that the level of arabinitol could be an additional criterion for the identification of the fungi. A certain relationship between the arabinitol level and the virulence factor was observed which could be confirmed only by parallel investigations on experimental animals.