Table 1: Constituents detected in G. lutea methanol extract using MALDI-TOF.

AnalyteMonitored m/z

Gentisin259.5534
Bellidifolin-8-O-glucoside437.6503
Demethylbellidifolin-8-O-glucoside423.9371
Isovitexin433.8520
Swertiamarin375.6206
Amarogentin587.1917
Gentiopicroside*379.7141

*Gentiopicroside pseudomolecular ion is adduct with Na+.