A polyphenol and flavonoid that has diverse biological activities; inhibits adherence of P. gingivalis onto human buccal epithelial cells by >50% at 250 μg/ml; has antimutagenic properties in UV-irradiated E. coli cells; inhibits cell death induced by D-galactosamine and TNF-α in primary cultured mouse hepatocytes by 29.9% at 80 μM; inhibits HCT116 colorectal cancer cell proliferation by 57% at 100 μM