Flavonoids in Ecuadorian Oreocallis grandiflora (Lam.) R. Br.: Perspectives of Use of This Species as a Food Supplement

Table 1

Flavonoids identified in leaf extract of O. grandiflora by HPLC-UV/DAD, HPLC-ESI-MS, and MS².

Peak number	Compound	Flower extract; mg/g d.e. (mg/g drug)	Leaf extract; mg/g d.e. (mg/g drug)	(nm)	[M-H]^- (m/z)	MS^2 (m/z) base peak
1	Myricetin 3-O-β-glucuronide	d	d	255,355	493	317
2	Isorhamnetin hexuronide	nd	d	251,351	491	315, 299
3	Quercetin 3-O-rutinoside	nd	15.6 ± 0.4; (0.47 ± 0.01)	255,355	609	301
4	Quercetin 3-O-β-glucuronide	34.7±0.6; (0.63 ± 0.01)	5.8 ± 0.1; (0.18 ± 0.01)	255,355	477	301
5	Isorhamnetin hexoside	nd	d	255,355	477	315, 299
6	Isorhamnetin 3-O-rutinoside	nd	21.1 ± 1.2; (0.64 ± 0.01)	255,355	623	315, 299

Compounds are listed in order of elution, confirmed with injection of isolated compound, confirmed with commercially standard compound, detected = d, not detected = nd, and d.e. = dried extract.