Characterization of yeasts isolated from red wine surface film.

We have isolated 6 morphologically different axenic yeast cultures from the film surface of red wine. Based on morphological, physiological and biochemical characteristics we have identified the strains as follows: isolates 1-4 are morphologically different strains of the anamorph basidiomycetous film-forming yeast Candida humicola (DASZEWSKA) DIDDENS et LODDER, syn. Apiotrichum humicola (DASZEWSKA) VON ARX WEISMAN. Isolates 5 and 6 belong to the genus Saccharomyces of the associated species S. cerevisiae (isolate 5 originally S. bayanus, isolate 6 S. capensis). These do not participate in the surface film formation.