Table 1.

Total phenolic contents (TPC), total flavonoid contents (TFC), and flavanone and dihydroflavonol contents (FDC) of EECP and EEPG^a.

Sampleb	TPC (mg GAE/g)	TFC (mg RE/g)	FDC (mg NE/g)
EECP	192.80** ± 10.85	297.24NS ± 10.32	229.64** ± 7.05
EEPG	121.81 ± 8.83	297.09 ± 10.66	164.14 ± 4.95

  ^aData are shown as the mean ± SD (n = 3). ^bEECP and EEPG represent the ethanol extract of Chinese propolis (poplar type) and ethanol extract of Chinese poplar gum, respectively. NS means not significant; ^*means significant (P < 0.05); ^**means very significant (P < 0.01). GAE: gallic acid equivalent; RE: rutin equivalent; NE: naringenin equivalent.