The invention relates to extracts and compositions from Gnetum africanum. It also concerns plant extracts enriched in resveratrol and methods for obtaining the same. Described herein are processed plant materials which comprise about 20 μg resveratrol per gram of dried plant material and plant extracts which comprise at least about 0.002% w/w resveratrol. Also described are resveratrol glycosides and compositions comprising same. The invention further encompasses food products, nutraceutical products, pharmaceutical compositions which comprise processed plant materials, plant extracts and/or resveratrol glycosides.
