QUANTITATIVE ANALYSIS OF SOME PHENOLIC COMPOUNDS FROM VIOLA SPECIES TINCTURES.
ANCA TOIU, L. VLASE, ILIOARA ONIGA, M. TĂMAŞ
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Abstract:

We analysed the 10% tinctures of air-dried flowering aerial parts from three Viola species (Violaceae) and we have performed spectrophotometric determinations of flavonoids and polyphenol carboxylic acids and a HPLC study of salicylic acid derivatives. For V. tricolor L. we have established the content in flavonoids (2.108%), polyphenol carboxylic acids (0.921%) and salicylic acid (91.83·10^–3 %). For V. arvensis Murray and V. declinata Waldst. et Kit. results obtained were, respectively: 1.846% and 1.694% flavonoids, 0.632% and 0.505% polyphenol carboxylic acids, 92.21·10^–3 % and 137.24·10^–3 % salicylic acid. We observed small differences in the chemical composition of the three Viola species.

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