Fig. 3
From: A study on the processing technology for Rhizoma Coptidis
Chromatogram of reference substances: 1. Epaperberine, 2. Coptidine, 3. Palmatine, and 4. Berberine
Fig. 3 | BMC Biotechnology
From: A study on the processing technology for Rhizoma Coptidis
Chromatogram of reference substances: 1. Epaperberine, 2. Coptidine, 3. Palmatine, and 4. Berberine