Abstract
DURING the last three years, Schopfer has published several papers1 showing that vitamin B1 is a growth factor for Phycomyces. This mould can now be grown on a synthetic medium composed of glucose, asparagine, inorganic salts and the vitamin. During the last two years, he has described2 an alternative growth factor (MP) which differs from the vitamin in being resistant to heat (128° C. for 20 hours causes only 75 per cent loss of activity) and resistant to alkali ; it is oxidized by hydrogen peroxide.
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References
Schopfer, C. R. Acad. Sci., 200, 1965 (1935).
Schopfer, Z. Vitaminforsch., 4, 187 (1937).
Knight, NATURE, 139, 628 (1937).
Knight, Chem. and Ind., 56, 445 (1937).
Schopfer and Jung, C.R. Acad. Sci., 204, 1500 (1937).
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SINCLAIR, H. Growth Factors for Phycomyces. Nature 140, 361 (1937). https://doi.org/10.1038/140361a0
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DOI: https://doi.org/10.1038/140361a0
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