Spectrophotometric Determination of Enniatin a and Valinomycin in Fungal Extracts By Ion Complexation
- 1 March 1973
- journal article
- spectroscopy
- Published by Taylor & Francis in Analytical Letters
- Vol. 6 (3) , 265-274
- https://doi.org/10.1080/00032717308062205
Abstract
When an ethylene dichloride solution of enniatin A is shaken with potassium picrate in potassium hydroxide solution, picrate anion is extracted into the organic phase in amount proportional to the enniatin concentration. Enniatin A can thus be determined spectrophotometrically in the range 5-60 μg/ml. Neutral lipids do not interfere. Valinomycin can be determined similarly, but cyclodepsipeptides that lack cationophoric properties are not estimated in this method.Keywords
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