Effect of Ethanol/Water Solvents on Phenolic Profiles and Antioxidant Properties of Beijing Propolis Extracts

Table 2

Total phenolic and flavonoid contents of propolis extracts.

Samples	Extraction yield	Total polyphenol content	Total flavonoids content
	(%)	(mg GAE g^−1)	(mg RE g^−1)
WEP
25% EEP
50% EEP
75% EEP
95% EEP
100% EEP

Note: water extracts of propolis were expressed as WEP. Extracts of propolis by using 25, 50, 75, 95, and 100 wt. % ethanol/water solvents were expressed as 25% EEP, 50% EEP, 75% EEP, 95% EEP, and 100% EEP, respectively. TPC was expressed as milligram of gallic acid equivalent per gram of propolis (mg GAE g⁻¹). TFC was expressed as milligram of rutin equivalent per gram of propolis (mg RE g⁻¹). Dates are mean ± standard deviation (). Values in the same column followed by the same lowercased letter are not significantly different by Duncan’s Multiple-Range Test ().