Abstract
Summary
Nicotinamide, biotin, calcium pantothenate, and thiamin must be supplied for prompt and abundant growth of Torula cremoris in a basal medium of inorganic salts, glucose and ammonium phosphate or amino acids. The combination of nicotinamide and biotin supports slow growth and under certain conditions nicotinamide alone may suffice.
Tests with the 4 vitamins singly and in various combinations show that the response to the vitamins depends to some extent upon the basal medium used in the tests. The results emphasize the importance of the composition of the basal medium in studies of vitamin requirements.
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