MATERIALS AND METHODS Cultures. Torula utilis strain 3 (Candida utilis) was obtained from the Department of Bacteriology and Saccharomyces cerevisiae strain WY38 from the Genetics Department of the IUniversity of Wisconsini; Saccharomyces cerevisiae strain 49 from the Forest Products Laboratory, U. S. Department of Agriculture; and Zygosaccharomyces acidifaciens from the Northern Utilization Research and Development Division, U. S. D. A.
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