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A capillary electrophoresis method with HP-beta-CD as the chiral selector is established for the enantioseparation of two pairs of phenylpropanoids, which are isolated from Hydnocarpus annamensis. The effects of buffer pH, HP-beta-CD and buffer concentration, applied voltage, and cartridge temperature on the enantioseparation are optimized. A baseline separation of the four diastereomers of guaiacyl glycerol is achieved in less than 10 min under these optimized conditions: 25 mmol/L Borax-NaOH buffer (pH 10.01) in the presence of 30 mmol/L HP-beta-CD at 15 degrees C and 30 kV. The experimental results show that the reported method by capillary electrophoresis for the separation of the four diastereomers of guaiacyl glycerol is powerful, sensitive, and fast, requires smaller amounts of reagents, and can be employed as a reliable alternative to other methods.

journal of chromatographic science

Enantiomer Separation of the Four Diastereomers of Guaiacyl Glycerol from Hydnocarpus annamensis by Capillary Electrophoresis with HP- -CD as a Chiral Selector