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He K.,Southwest University | He K.,Chongqing Sweetpotato Research Center | Ye X.,Southwest University | Ye X.,Chongqing Sweetpotato Research Center | And 6 more authors.
Journal of Chromatography B: Analytical Technologies in the Biomedical and Life Sciences | Year: 2012

It is known that the choice of solvent system for high speed counter-current chromatography separation is of utmost importance. In this study, a simple and rapid thin layer chromatograph coupling with fluorometric (TLC-F) method has been used to determine the partition coefficient of target compounds in HSCCC solvent system. Two components, 6,7-dimethoxycoumarin and 5-hydroxymethyl-2-furfural were successfully separated from purple sweet potato extracts by successive sample injection for the first time, using n-hexane-ethyl acetate-methanol-water (1:2:1:1, v/v/v/v) as the solvent system. Additionally, statistical analysis showed that there was no significant difference in partition coefficient obtained by the TLC-F method and by HPLC, which demonstrated the usefulness of TLC-F method. © 2011 Elsevier B.V. Source

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