Citation:
WANG Wei, HE Tianyu, LAN Tao, XI Xingjun, ZHAO Xinying. Isolation and preparation of polyphenols from grape seed by high-speed counter-current chromatography combined with preparative high performance liquid chromatography[J]. Chinese Journal of Chromatography,
;2019, 37(11): 1193-1199.
doi:
10.3724/SP.J.1123.2019.05024
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Eight polyphenols were separated from grape seed by high-speed counter-current chromatography (HSCCC). The separation was performed using a two-phase solvent system composed of 1-butanol-ethyl-water (1:14:15, v/v/v) and n-hexane-ethyl-water (1:10:10, v/v/v). The upper and lower phases were used as the stationary and mobile phases, respectively. A flow rate of 2.0 mL/min was employed for the separation. The apparatus was rotated at 900 r/min, and the detection wavelength was set at 280 nm. Under the selected conditions, procyanidins B1, procyanidins B2, gallic acid, epicatechin gallate, and catechin were obtained from the grape seed extracts with a purity of 98.5%, 97.2%, 98.3%, 98.9%, and 96.7%, respectively. Epicatechin, epicatechin gallate, and gallocatechin gallate were obtained by preparative high performance liquid chromatography with the purity of 99.2%, 99.3%, and 99.2%, respectively. The proposed method is simple and shows high separation efficiency, and will be of great importance for the comprehensive utilization of grape seed.
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