Abstract
Resveratrol, which occurs in two isomeric forms, trans and cis, is a phytoalexin with pharmacological activity, for example anti-cancer, anti-cardiovascular disease, and life-span increasing properties. Red wine is the main source of the compound and an easy way of including resveratrol in the human diet. In the work discussed in this paper determination of resveratrol and separation of its isomers were investigated using micellar electrokinetic chromatography. The detection wavelength, micelle concentration, and applied voltage were studied and optimized. Baseline separation of the isomers of resveratrol was achieved. The stability of resveratrol under typical consumer conditions was also evaluated. When resveratrol was determined in the top-grade dry-red wine China Great Wall ‘‘Fazenda’’ by use of our analytical method the concentration was found to be ≥1.3 ± 0.1 mg L−1.
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