Aqueous preparations and ethanolic extracts of three Brazilian chemotypes of Lippia alba (Mill.) N.E. Brown (Verbenaceae) were investigated for the chemical variability of their non volatile constituents by HPLC/DAD/ESI-MS analysis. The main class of compounds in all the extracts investigated was phenylpropanoids, mainly verbascoside, followed by the flavonoids tricin-7-O-diglucuronide (present in Lippia alba chemotypes 2 and 3), luteolin-7-O-glucuronide (present in L. alba chemotype 1) and mono-and di-O-glucuronic derivatives of apigenin and tricin. Four iridoids, geniposidic acid, theveside, 8-epi-loganin and mussaenoside were also identified.
HPLC/DAD/ESI-MS analysis of non-volatile constituents of three Brazilian chemotypes of Lippia alba (Mill.) N. E. Brown
Karioti A.;
2008-01-01
Abstract
Aqueous preparations and ethanolic extracts of three Brazilian chemotypes of Lippia alba (Mill.) N.E. Brown (Verbenaceae) were investigated for the chemical variability of their non volatile constituents by HPLC/DAD/ESI-MS analysis. The main class of compounds in all the extracts investigated was phenylpropanoids, mainly verbascoside, followed by the flavonoids tricin-7-O-diglucuronide (present in Lippia alba chemotypes 2 and 3), luteolin-7-O-glucuronide (present in L. alba chemotype 1) and mono-and di-O-glucuronic derivatives of apigenin and tricin. Four iridoids, geniposidic acid, theveside, 8-epi-loganin and mussaenoside were also identified.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
