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Published on: June 14, 2020
Isolation and purification of acteoside and isoacteoside from Plantago psyllium L. by high-speed counter-current
Li Li1, Rong Tsao, Zhiqiang Liu
1ChangChun Institute of Applied Chemistry, Graduate School of the Chinese Academy of Science, ChangChun, PR China.
Abstract:
Two isomeric phenylethanoid glycosides, acteoside and isoacteoside were isolated and purified from the seeds of Plantago psyllium L. for the first time by high-speed counter-current chromatography (HSCCC) using a solvent system consisting of ethyl acetate-water (1:1, v:v). By injecting 200 mg of the n-butanol extract of P. psyllium for five consecutive times, the two-step HSCCC procedure yielded a total of 165 mg of acteoside and 17.5 mg of isoacteoside from 978 mg extract. The recovery rates for acteoside and isoacteoside were 90 and 84%, respectively, and the purities were 98 and 94%, respectively. The HSCCC fractions were analyzed by HPLC and the structures were identified by UV, LC-APCI-MS in negative ion mode, and confirmed by NMR experiments.
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