| Popis: |
SURMMARY The crude drug of Arctostaphylos uva-ursi consists mainly of three groups of pharmaceutically relevant compounds, arbutin being the main phenolic constituent. In this study, four wild populations of A. uva-ursi were evaluated for their arbutin content in two different seasons, spring and autumn, coinciding with two periods of the vegetative cycle. The obtained results showed that autumn was a better period than spring to collect the plant material, and that leaves of A. uva-ursi from the site called Adraen Alt were found to contain the highest concentration of arbutin (9.1% of dry weight). No significant variations in the arbutin content were observed within any of the studied natural sites. |
