[Quantitative analysis of resveratrol from grape seeds and grape skins by high performance liquid chromatography...

In order to perform a quantitative analysis of resveratrol from grape seeds, grape skins and waste residue of grape winery, acetonitrile-water (26:74) was applied as the fluxion phase. The detective wave-length (lambda) was 303 nm. Colume temperature was 35 degrees C. The type of chrimato pattern colume was SupelcosiLTMLC-18 (250 mm x 4.6 mm, 5 microns). Results showed that the contents of resveratrol from grape skins were higher than those of grape seeds. Among different kinds of grape skins, resveratrol contents varied. The reserveratrol content of Suo Suo grape skin was the lowest (0.9850 microgram/g). Among the same kinds of grape skins from the same production area, the resveratrol content was highest in the skin of waste residue of grape winery followed by the fresh grape skin and the old grape skin ranked thirdly, and the differences of resveratrol contents were statistically significant.