Enantioselective separation of catechin and gallocatechin was achieved by using micellar electrokinetic chromatography (MEKC) modified by cyclodextrin (HP-beta-CD). The analytical enantioseparation of these two catechins was found to be very useful because, for the first time, the presence of (-)-gallocatechin and (-)-catechin (chiral phytomarkers) in tea samples, was regarded as an index of thermal degradation of the product. More than twenty tea samples of different origin (China, Japan, Ceylon) were analysed; the chiral phytomarkers of degradation was found in some of the products proving the occured thermal degradation.
S. Furlanetto, S. Pinzauti, R. Gotti, J. Fiori. (2008). Enantioselective MEKC analysis of catechins in tea samples of different origin. GDANSK : s.n.
Enantioselective MEKC analysis of catechins in tea samples of different origin
GOTTI, ROBERTO;FIORI, JESSICA
2008
Abstract
Enantioselective separation of catechin and gallocatechin was achieved by using micellar electrokinetic chromatography (MEKC) modified by cyclodextrin (HP-beta-CD). The analytical enantioseparation of these two catechins was found to be very useful because, for the first time, the presence of (-)-gallocatechin and (-)-catechin (chiral phytomarkers) in tea samples, was regarded as an index of thermal degradation of the product. More than twenty tea samples of different origin (China, Japan, Ceylon) were analysed; the chiral phytomarkers of degradation was found in some of the products proving the occured thermal degradation.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.