PHYSICAL AND CHEMICAL PROPERTIES OF TINCTURES FROM FRESH AND DRIED LEAVES OF MEDICAL PLANTS
The paper compares absorptive spectra and chromatograms of alcoholic tinctures from fresh and dried leaves of medical herbs of different families. The drying of plants with low content of flavonoids, alkaloids, saponins (nettle, rib grass) considerably changes the composition. These plants are recommended to be used fresh-cut for tinctures. The drying of plants (nosebleed, motherwort, and Callisia fragrans) known for comparatively high contents of the above-mentioned substances almost does not have influence on their composition in tinctures. These plants appear to be suitable for preparing tinctures both in fresh and dried forms.