Kvasny Prum. 1981; 27(4): 81-89 | DOI: 10.18832/kp1981014

New yeast strains for production of feed yeasts from ethanol.Peer-reviewed article

J. RYBÁŘOVÁ

Production yeast culture is used for studying of ethanol utilization by the yeast Candida utilis. The culture is kept in state of the yeast paste that is renewed by successive culturings. Changes in yeast morphology were observed after addition of molasses stillage distillery slops, which stimulate the utilization of ethanol, into the basic synthetic culture medium. From the production culture four yeast strains with different characteristics wore isolated. Two of them [III-5 and III-6] were determined as new yeast species and called Candida ethanolica; the others (I-1 and II-2] belonged to the yeast Candida utilis. Strains III-5 and III-6 grew better on ethanol in comparison with strains I-1 and II-2. Moreover, it was shown that for culturing of production yeast paste under non-sterile conditions it is necessary to use only synthetic culture medium and to check strain homogenity of the production culture periodically.
(In Czech, English summary only)

Keywords: feed yeasts, strain, ethanol, Candida utilis

Published: April 1, 1981