Abstract
IN trying out several emulsifying agents having at a fairly neutral pH a stabilizing effect upon emulsions of olive oil, monobutyrine, ethylbutyrate, methylbutyrate and ethylpropionate, the following observations were made. Gummi arabicum activates on one hand the cleavage of olive oil to a very remarkable degree, but exerts no influence upon the cleavage of monobutyrine. It causes on the other hand a very sharp inhibition of the saponification of such esters where glycerol is substituted by lower alcohols. This inhibitory effect amounted in several instances (depending upon the source of the lypolytic enzymes employed) to 100 per cent, and in no case was finally less than 65 per cent. In the tests with olive oil, the activating effect of gummi arabicum proved to be dependent upon the stability of the emulsion, which on its part depends principally upon the procedure of preparation and to a much less degree upon the absolute amount of gummi arabicum added. Thus, in several instances, where no stable emulsions were obtained, the activating effect was either nil or very small.
Similar content being viewed by others
Article PDF
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
FODOR, P. Specific Inhibition of Esterase in Ester-Hydrolysing Enzyme Systems. Nature 158, 375 (1946). https://doi.org/10.1038/158375a0
Issue Date:
DOI: https://doi.org/10.1038/158375a0
This article is cited by
-
Co-existence of Two Different Esterases in Liver Juice
Nature (1947)
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.