The contents of phenolic acids in the leaf extracts of ten Aquilegia L. species (A. vulgaris L., A. alpina L.,/4- atrata Koch., A. canadensis l.,A. caerulea James, A. flabellata Sieb, et Zucc., A. hybrida Scott- Elliot, A. olympica Boiss., A. pyreneica D.C., A. vitoleili L.) were determined by the spectroscopic methods and expressed as caffeic acid equivalent. The obtained results ranged from 0.31% to 1.13%. The qualitative analysis was performed by 1D- and 2D-TLC chromatography against the standards. In all studied samples the following acids were found: p-hydroxybenzoic, vanillic, protocatechuic, p-coumaric, caffeic, ferulic, and chlorogenic. Moreover, in some extracts sinapic, gallic, a- and y-resorcylic acids were detected.
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