Abstract

WEI, Yangji; LI, Pi; MA, Liyan  and  LI, Jingming. Separation and purification of four stilbenes from Vitis vinifera L. cv. cabernet sauvignon roots through high-speed counter-current chromatography. S. Afr. J. Enol. Vitic. [online]. 2014, vol.35, n.2, pp.226-233. ISSN 2224-7904.

A method for preparative separation and purification of trans-resveratrol, δ-viniferin, ε-viniferin and trans-vitisin B from the roots of Vitis vinifera L. cv. Cabernet Sauvignon was successfully established and is reported on in this paper. The four important stilbenes were purified by high-speed counter-current chromatography (HSCCC) with a suitable quaternary solvent system composed of chloroform-methanol-n-butanol-water (4:3:0.05:2, v/v). A total of 7.1 mg ± 0.2 mg of trans-resveratrol, 1.1 mg ± 0.1 mg of á-viniferin, 18.7 mg ± 0.5 mg of ε-viniferin, and 12.2 mg ± 0.2 mg of trans-vitisin B, with purities of 97.89%, 90.61%, 94.37% and 78.38% respectively, were obtained from 241 mg of crude sample in a one-step HSCCC separation. The chemical structures of trans-resveratrol and á-viniferin were further confirmed with the retention time using the method of standard addition, while the structural identification of ε-viniferin and trans-vitisin B was performed with LC-ESI/MS, Ή-NMR, and ¹³C-NMR.

Keywords : HSCCC; ε-viniferin; trans-vitisin B; Vitis vinifera L. Cabernet Sauvignon Abbreviations; HSCCC; high-speed counter-current chromatography HPLC; high performance liquid chromatography NMR; nuclear magnetic resonance.

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