Table 3 Total polyphenol and flavonoid contents in 20 Korean, Australian, Brazilian, and Chinese propolis ethanol extracts

P1

219.5 ± 5.31^a–c

29.7 ± 0.77^f–h

P2

148.0 ± 4.32^f–i

40.5 ± 0.77^b,c

P3

229.0 ± 4.82^a,b

23.5 ± 0.15^i,j

P4

202.4 ± 4.11^b–d

30.4 ± 0.36^e–g

P5

196.5 ± 4.28^c–e

26.3 ± 0.57^g–i

P6

135.9 ± 5.70^hi

23.6 ± 0.38^i,j

P7

205.6 ± 5.48^b–d

35.9 ± 0.57^c–e

P8

151.9 ± 5.01^f–h

26.5 ± 0.56^g–i

P9

205.0 ± 5.98^b–d

49.8 ± 0.79^a

P10

238.9 ± 4.61^a

36.5 ± 0.61^b–d

P11

132.3 ± 2.78^h,i

25.3 ± 1.27^g–j

P12

125.1 ± 5.37ⁱ

28.7 ± 0.17^f–i

P13

233.5 ± 4.39^a,b

28.3 ± 2.13^f–i

P14

181.7 ± 4.20^d,e

27.6 ± 0.29^f–i

P15

183.2 ± 5.75^d,e

26.6 ± 0.07^g–i

P16

168.7 ± 5.68^e–g

37.8 ± 2.02^b–d

P17

190.3 ± 5.45^c–e

20.8 ± 0.17^j

P18

171.6 ± 6.21^e,f

26.6 ± 0.20^g–i

P19

148.3 ± 5.77^f–i

24.4 ± 2.01^h–j

P20

48.5 ± 4.08^j

42.2 ± 1.75^b

Australian

142.4 ± 3.61^g–i

38.0 ± 0.90^b–d

Brazilian

126.8 ± 4.12^h,i

53.0 ± 0.22^a

Chinese

132.1 ± 3.28^h,i

32.5 ± 0.53^d–f