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Marmite: Vitamin B1 Content

    Naturevolume 134page696 (1934) | Download Citation



    WITH reference to the recent statement in our columns (NATURE, Oct. 20, p. 623) that the yeast extract “Marmite” contains 840 international vitamin B! units per oz., Mr. A. R. Keast, 4 Anne Boleyn's Walk, Cheam, Surrey, writes that in answer to inquiries made some months ago, he was informed that this result had been obtained from an isolated sample furnished by the Marmite Food Extract Co. Ltd. Biological assays of ordinary Marmite carried out in Mr. Keast's own laboratories and elsewhere have never, apparently, yielded a result higher than 280 international units per oz. This figure, although high, is lower than the assayed content of certain other products on the market.

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