Abstract
Summary
Yeast extract has been shown to reverse the inhibition of yeast growth caused; by cyanide. No known compound was found which duplicated the action of yeast extract, although methionine and cysteine had some “anti-cyanide” activity. Excess pantothenic acid had a beneficial effect on growth under certain conditions.
It has been demonstrated that the action of yeast extract depends on at least 2 substances which can be separated by charcoal adsorption. Indirect evidence indicates that the activity of both filtrate and eluate principles is due to more than a single substance.
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