Abstract
AN attempt to prepare a concentrate of folic acid from liver by the method of Hutchings et al.1 resulted, as already noted in a recent review2, in the preparation of a fraction probably containing folic acid, together with another fraction soluble in chloroform, which likewise stimulated the growth of certain micro-organisms. A second chloroform-soluble fraction with similar properties has now been obtained. All three of these fractions stimulate the growth of Lactobacillus helveticus and Streptococcus lactis R 8082, but not that of Lactobacillus arabinosus 17/5. Although the growth-promoting properties of the chloroform-insoluble fraction are probably due to folic acid, the chloroform-soluble fractions are believed to contain new factors not previously described.
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References
J. Biol. Chem., 141, 521 (1941).
NATURE, 153, 478 (1944).
Acta Med. Scand., 88, 620 (1936).
J. Lab. Clin. Med., 27, 1086 (1942).
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BARTON-WRIGHT, E., EMERY, W. & ROBINSON, F. New Components of the Vitamin B Complex. Nature 153, 771 (1944). https://doi.org/10.1038/153771a0
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DOI: https://doi.org/10.1038/153771a0
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