DETERMINATION OF FLAVONOIDS CONTENT IN HAWTHORN FRUITS AND CUT-PRESSED GRANULES PREPARED FROM HAWTHORN FRUITS
The article describes results of the study aimed at development of the method for quantitative determination of the sum of flavonoids in hawthorn fruits and their dosage form by differential spectrophotometry. Using hyperoside as a reference standard and based on the obtained data optimal conditions for the method were proposed. Method validation results are also described in the article. Acceptability criteria for the developed method were established and the limits of biologically active substances in hawthorn raw material were proposed.