Determination of carboxylic acids content in the herbal mixtures by HPLC

The aim of the study was to research the qualitative composition and to investigate the quantitative content of some carboxylic acids in the herbal mixtures with established hypoglycemic, hypolipidemic and antioxidant activity in previous studies in vivo. Materials and methods. Studies of carboxylic acid content in the herbal mixtures were performed by HPLC analysis using Agilent Technologies 1200 liquid chromatograph (USA). Identification and quantitative analysis were performed using standard solutions of carboxylic compounds (tartaric, pyruvic, isocitric, citric, succinic and fumaric acids). Conclusions. HPLC analysis of five samples of the herbal mixture with antidiabetic activity showed the presence of six carboxylic acids. The dominant acid in all samples was isocitric acid. Among the most important for the prevention and treatment of diabetes, high levels of succinic and fumaric acids have been identified and established. The obtained data indicate a correlation between the phytochemical composition of the studied herbal mixtures and their pharmacodynamics, which was previously established