Emerging role of bioflavonoids in gastroenterology: Especially their effects on intestinal neoplasia

Figure 1 Chemical structure of flavonoids (A), apigenin (B) and epigallocatechin gallate (C).

Figure 2 Serum levels of apigenin of six volunteers after ingestion of 5 flavonoid tablets over 5 h.

Figure 3 Inhibition of proliferation of Caco-2 cells and HT-29 cells in vitro by tea flavonoids used as nutritional supplement. a: significantly different; Grey line: Verum (content of tablets plus matrix); Black line: Placebo (tablet matrix only).