quantitative determination

Рresence of polysaccharides, flavonoids, quinones compounds and vitamin C detected using physico-chemical methods of analysis. Quantitative determination of the amount of flavonoids in different extracts of G. imbricatus. Identified biologically active compounds isolated from the extract give grounds to assume that a given medicinal plants will have a wide range of pharmacological activities. 

A novel procedure is developed for the quantitative determination of volatile compounds in the vapour phase over samples. Substances were extracted and preconcentrated from the headspace on porous polymer adsorbents under the conditions of thermodynamic equilibrium, followed by back extraction from the adsorbent using organic solvents. The final monitoring was performed by capillary gas chromatography with an internal standard.