A sensitive and reliable RP-HPLC method was developed using a C18 CLC-ODS (M) - 4.6x250 mm(2)column and gradient elution for the analysis of phenolic compounds in propolis raw material and its products. A procedure for the extraction of phenolic compounds using aqueous ethanol (90%) with the addition of veratraldehyde as the internal standard (IS) was developed allowing to quantify ten compounds: caffeic acid, coumaric acid, ferulic acid, cinnamic acid, aromadendrin-4'-methyl ether (AME), isosakuranetin, drupanin, artepellin C, baccharin, and 2,2-dimethyl-6-carboxyethenyl-2H-1-benzopyran acid (DCBEN). The developed method gave good detection response and linearity in the range of 20.83-533.33 microg/mL.
The method presented good results for the following parameters: selectivity, linearity, accuracy, precision, robustness, as well as limit of detection and limit of quantitation. Therefore, this method could be considered as an analytical tool for the quality control of B. dracunculifolia raw material and its products in both cosmetic and pharmaceutical companies.
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