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Malonyl-ginsenosides

LC-APCI-MS has been shown to very useful for the characterization of both neutral ginsenosides as well as thermolabile malonyl-ginsenosides in ginseng extracts (Ma et al., 2005). However, LC-MS with ESI interface is a highly sensitive and soft ionization technique for the LC-MS analysis of thermolabile compounds and is considered to be the best method for the analysis of ginsenosides as it can overcome most problems associated with the thermolabile malonyl-ginsenosides and low molecular ion abim-dance levels. LC-ESI-MS is characterized by abundant adduct formation... [Pg.57]

Du, X. W., Wills, R. B. H., and Stuart, D. L. (2004). Changes in neutral and malonyl ginsenosides in American ginseng Panax quinquefolium) during drying, storage and ethanolic extraction. Food Chem. 86,155-159. [Pg.83]

Kite, G. C., Howes, M.-J. R., Leon, C. J., and Simmonds, M. S. J. (2003). Liquid chromatogra-phy/mass spectrometry of malonyl-ginsenosides in the authentication of ginseng. Rapid Commun. Mass Spectrom. 17, 238-244. [Pg.87]

Figure 3 HPLC-ELSD profile of both acidic and neutral ginsenosides. Separation is performed on a Hypersil BDS CIS column using a step gradient of (A) 8 mmol 1 ammonium acetate, pH 7 with ammonium hydroxide and (B) MeCN. Peaks 1-25 are identified as neutral and malonyl ginsenosides, respectively. Rg, (1), Re (2), Ro (3), malonyl-Rai/Raa (4), malonyl-Rbi (5), malonyl-Rba/Rbs/Rc (6), malonyl-Rbi (7), malonyl-Rai/Raa (8), malonyl-Rba/Rbs/Rc (9), malonyl-Rbs/Rbs/Rc (10), Rag (11), malonyl-Rba/RlVRc (12), Rf (13), malonyl-Rba/Rbs/Rc (14), malonyl-Rd Notoginsenoside R2/F3 (15), malonyl-Rd Rai/Raa/isomer (16), Rbi (17), Rga (18), Rc (19), Rai/Raa/isomer (20), Rai/Raa/isomer (21), Rba (22), Rbs (23), Rai/Raa/isomer (24), Rd (25). (Reproduced with permission from Fuzzati N, Gabetta B, Jayakar K, Pace R, and Peterlongo F (1999) Journal of Chromatography A 854 69-79 Elsevier.)... Figure 3 HPLC-ELSD profile of both acidic and neutral ginsenosides. Separation is performed on a Hypersil BDS CIS column using a step gradient of (A) 8 mmol 1 ammonium acetate, pH 7 with ammonium hydroxide and (B) MeCN. Peaks 1-25 are identified as neutral and malonyl ginsenosides, respectively. Rg, (1), Re (2), Ro (3), malonyl-Rai/Raa (4), malonyl-Rbi (5), malonyl-Rba/Rbs/Rc (6), malonyl-Rbi (7), malonyl-Rai/Raa (8), malonyl-Rba/Rbs/Rc (9), malonyl-Rbs/Rbs/Rc (10), Rag (11), malonyl-Rba/RlVRc (12), Rf (13), malonyl-Rba/Rbs/Rc (14), malonyl-Rd Notoginsenoside R2/F3 (15), malonyl-Rd Rai/Raa/isomer (16), Rbi (17), Rga (18), Rc (19), Rai/Raa/isomer (20), Rai/Raa/isomer (21), Rba (22), Rbs (23), Rai/Raa/isomer (24), Rd (25). (Reproduced with permission from Fuzzati N, Gabetta B, Jayakar K, Pace R, and Peterlongo F (1999) Journal of Chromatography A 854 69-79 Elsevier.)...
See other pages where Malonyl-ginsenosides is mentioned: [Pg.30]    [Pg.46]    [Pg.50]    [Pg.50]    [Pg.51]    [Pg.52]    [Pg.54]    [Pg.58]    [Pg.58]    [Pg.64]    [Pg.958]    [Pg.30]    [Pg.46]    [Pg.50]    [Pg.50]    [Pg.51]    [Pg.52]    [Pg.54]    [Pg.58]    [Pg.58]    [Pg.64]    [Pg.958]    [Pg.736]    [Pg.4]    [Pg.4]    [Pg.4]    [Pg.4]    [Pg.12]    [Pg.12]    [Pg.30]    [Pg.31]    [Pg.32]    [Pg.53]    [Pg.56]    [Pg.223]    [Pg.441]   
See also in sourсe #XX -- [ Pg.23 , Pg.24 , Pg.25 , Pg.26 , Pg.27 , Pg.28 , Pg.29 , Pg.30 , Pg.31 ]



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