Anti-Helicobacter pylori, anti-Inflammatory, and Antioxidant Activities of Trunk Bark of Alstonia boonei (Apocynaceae)

Table 2

Quantitative phytochemical screening of aqueous and methanol extracts of A. boonei.

	Flavonoids (mg/g E quercetin)	Polyphenols (mg/g E catechin)	Tannins (mg/g E tannic acid)
Aqueous extract
Methanol extract

The levels of flavonoids, total polyphenols, and tannins are expressed as milligram equivalents of quercetin, milligram equivalents of catechin, and milligram equivalents of tannic acid, respectively.