flower, 4.4% in the ripe fruit, and in the unripe

Other compounds reported in St. John’s wort include xanthones, carotenoids, β-sitosterol, pectin, fatty acids, amino acids, vitamin C, tannins (Duke, 1985), bisanthraquinone glycosides (Wirz et al., 2000), and in the stems and leaves, hydroperoxycadiforin (Rücker et al., 1995).