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Antioxidant Activity and Inhibition of α-Glucosidase by trans-Resveratrol, Piceid, and a Novel trans-Stilbene from the Roots of Israeli Rumex bucephalophorus L.
The roots of Rumex bucephalophorus, collected in Israel, were analyzed for trans-stilbenes. Two stilbene-O-glycosyl derivatives were identified, in addition to 3,5,4‘-trihydroxystilbene (1)
Resveratrol and two monomethylated stilbenes from Israeli Rumex bucephalophorus and their antioxidant potential.
The roots of Rumex bucephalophorus were analyzed for resveratrol and analogues and two stilbene-O-methyl derivatives were identified, in addition to resver atrol (3,5,4'-trihydroxystilbenes) and the antioxidant capacities of all these stilbenes were determined.
Antioxidant activity and inhibition of alpha-glucosidase by trans-resveratrol, piceid, and a novel trans-stilbene from the roots of Israeli Rumex bucephalophorus L.
These findings extend the range of reported beneficial effects of stilbene derivatives, and demonstrate the multifaceted activities that dietary polyphenols may exert in the intestine, where their concentrations are highest in the body.