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Table 1 Alkaloid content in rhizomes (n = 20) of Hydrastis canadensis, Coptis chinensis and Coptis trifolia (Similar alkaloids differ significantly among species at P < 0.0001.)

From: Significant differences in alkaloid content of Coptis chinensis (Huanglian), from its related American species

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)