Chromatography Research Today is a free monthly online journal that collates and summarizes the latest research about Chromatography, including details on column chromatography, gas chromatography (gc), liquid chromatograpy, hplc.

Identification of O-diglycosyl flavanones in Fructus aurantii by liquid chromatography with electrospray ionization and collision-induced dissociation mass spectrometry.

Zhou DY, Xu Q, Xue XY, Zhang FF, Liang XM

Biotechnology department, Dalian Institute of Chemical Physics, The Chinese Academy of Sciences, Dalian 116023, PR China.

This study reported the application of LC-ESI/MS method to characterize O-diglycosyl flavanones of traditional Chinese medicine Fructus aurantii(Zhiqiao) and UPLC retention parameters method to expatiate the structure-retention relationship of these O-diglycosyl flavanones. The extract of F. aurantii was found containing neoeriocitrin, isonaringin, naringin, hesperidin, neohesperidin and neoponcirin. Tandem mass spectrometric method has been utilized to elucidate structure and differentiate the interglycosidic linkage of isomeric O-diglycosyl flavanones. Based on the relative abundance of fragments formed by fragmentation at glycosidic bonds in positive ion mode and CID MS spectra of deprotonated molecule [M-H](-) in negative ion mode, the interglycosidic linkage of O-diglycosyl flavanones (flavonoid O-neohesperidosides and O-rutinosides, 1,2- and 1,6-) can be unambiguously differentiated. UPLC and a CSASS software were performed to obtain the retention parameters a, c and k values of these compounds. The Deltaa, Deltac and alpha values within compound pair naringin to neoriocitrin, neoponcirin to neohesperidin, naringin to isonaringin, neohesperidin to hesperidin, hesperidin to isonaringin, neohesperidin to naringin were calculated. We found there were some relationship between structure and retention parameters.

Published 20 September 2006 in J Pharm Biomed Anal, 42(4): 441-8.
Full-text of this article is available online (may require subscription).

© 2005-2008 Chromatography Research Today. All Rights Reserved.