Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Alkaloid content in rhizomes (n = 20) of Hydrastis canadensis, Coptis chinensis and Coptis trifolia (Similar alkaloids differ significantly among species at P < 0.0001.)
| Species | Major alkaloids | Mean (SD) alkaloid content (mg/g of rhizome) |
| Hydrastis canadensis | Berberine | 16.76 (3.42) |
| Hydrastine | 4.81 (1.48) | |
| Coptis chinensis | Berberine | 10.60 (1.36) |
| Coptisine | 2.35 (0.27) | |
| Palmatine | 2.91 (0.38) | |
| Coptis trifolia | Berberine | 3.80 (1.90) |
| Coptisine | 3.44 (1.45) |
