Antioxidant capacity and phenolic content of grapes; sun-dried raisins; and golden raisins and their effect on ex vivo serum antioxidant capacity.

Grapes and raisins provide phenolic antioxidants; which contribute to their potential health benefits. The objectives of this study were to compare the antioxidant capacity and phenolic content of green Thompson seedless grapes (the most common variety of grapes consumed in the United States); sun-dried raisins; and golden raisins (both produced from Thompson seedless grapes) and […]

Cancer chemopreventive activity of resveratrol; a natural product derived from grapes

Resveratrol; a phytoalexin found in grapes and other food products; was purified and shown to have cancer chemopreventive activity in assays representing three major stages of carcinogenesis. Resveratrol was found to act as an antioxidant and antimutagen and to induce phase II drug-metabolizing enzymes (anti-initiation activity); it mediated anti-inflammatory effects and inhibited cyclooxygenase and hydroperoxidase […]