ISHS Acta Horticulturae 680: III WOCMAP Congress on Medicinal and Aromatic Plants - Volume 6: Traditional Medicine and Nutraceuticals
RESVERATROL AND NATURALLY OCCURRING ANALOGUES IN VACCINIUM SPECIES |
| Authors: | A.M. Rimando, D.L. Barney |
| Keywords: | antioxidant activity, piceatannol, pterostilbene |
| Abstract:
In a continuing study, seventeen samples of berries representing varieties and cultivars of nine Vaccinium species collected from Idaho, Washington, and Wyoming were analyzed for their content of resveratrol, pterostilbene and piceatannol. These naturally occurring stilbenes have been reported to have potential cancer chemopreventive and strong antioxidant activities. Analysis by GC/MS showed contents of 0.26-4.67 and 0.12-2.74 µg/g lyophilized berry for resveratrol and pterostilbene, respectively. Piceatannol was found in only three of the species studied at levels of 0.25-0.61 µg/g lyophilized berries. Enzymatic hydrolysis of the extracts using  -D-glucosidase increased resveratrol levels up to 63-fold, suggesting and demonstrating for the first time, that resveratrol also occurs as a glycoside in Vaccinium berries.
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