Figure 1
![Figure 1](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2F1749-8546-6-40/MediaObjects/13020_2010_Article_142_Fig1_HTML.jpg)
Comparative chromatograms of EXD and its three different fractions (EA, BU, WA) with seven standard compounds at different UV detection wavelengths (258 nm) 1. Mangiferin; 2. Ferulic acid; 3. Curculigoside; 4. Icariin; 5. Jatrorrhizine; 6. Palmatine; 7. Berberine.