Figure 2
From: Quality assurance for Chinese herbal formulae: standardization of IBS-20, a 20-herb preparation

HPLC chromatograms. (a). Phellodendron chinensis bark. (b) Phellodendron amurense bark 1: palmatine; 2: berberine.
From: Quality assurance for Chinese herbal formulae: standardization of IBS-20, a 20-herb preparation
HPLC chromatograms. (a). Phellodendron chinensis bark. (b) Phellodendron amurense bark 1: palmatine; 2: berberine.