Myrtilli folium

The arbutin content in the extract of Myrtilli folium (3) is too low for detection with the DCC reagent. Instead of arbutin, an indistinct grey zone at R, 0.4 Ls seen. 

Uvae ursi folium (2) and Myrtilli folium (3) also. show their principal fl.avonol glycosides in the R, range of the hyperexside test (T2) accompanied by minor orange zones directly below, as in sample 2, and above, a.s in sample 3. 

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