Abstract
IN an important letter, Dr. van Veen1 describes the isolation of a vitamin B1 preparation from rice polishings more potent by rice bird tests than our own. At the same time he mentions that his activity reaches 500,000 units per gm. It is well to realise that some of our most potent specimens have shown this activity by pigeon test2, so that a final judgment upon the question must await further work.
Similar content being viewed by others
Article PDF
References
NATURE, 133, 137, Jan. 27, 1934
Biochem. J., 27, 232; 1933
NATURE, 131, 911, June 24, 1933.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
KINNERSLEY, H., O'BRIEN, J. & PETERS, R. Activity of Crystalline Preparations of Vitamin B1. Nature 133, 177 (1934). https://doi.org/10.1038/133177c0
Issue Date:
DOI: https://doi.org/10.1038/133177c0
Comments
By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.