Comparison of Ethanolic and Aqueous-Polyethylenglycolic Propolis Extracts: Chemical Composition and Antioxidant Properties

Table 2

Content (µg/ml) of flavonoids in AQUA-PEG and EEP.

	AQUA-PEG (µg/mL)	EEP (µg/mL)
Isorhamnetin	14.0 ± 0.6	37.5 ± 1.8
Apigenin	6.5 ± 0.3	13.7 ± 0.6
Quercetin	3.8 ± 0.2	8.6 ± 0.4
Hyperoside	3.3 ± 0.1	3.7 ± 0.2
Kaempferol	2.0 ± 0.1	6.0 ± 0.2
Rutin	0.32 ± 0.02	0.38 ± 0.02
Galangin	0.08 ± 0.004	1.12 ± 0.05
Isorhamnetin-3-O-rutinoside	0.07 ± 0.003	1.12 ± 0.06
Kaempherol-3-O-glucoside	0.17 ± 0.01	0.46 ± 0.02
Isorhamnetin-3-O-glucoside	0.13 ± 0.01	0.28 ± 0.01
(+)-Catechin	0.22 ± 0.01	0.06 ± 0.003
Avicularin	0.10 ± 0.01	0.31 ± 0.02
Phloridzin	0.03 ± 0.002	0.15 ± 0.01
Vitexin	0.012 ± 0.001	0.014 ± 0.001
Orientin	ND	0.036 ± 0.002
Tiliroside	ND	0.037 ± 0.002