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Table 1 HPLC-DAD/Q-TOF-MS analysis on eight subfractions of EACP

From: Bioactive components and mechanisms of Chinese poplar propolis alleviates oxidized low-density lipoprotein-induced endothelial cells injury

Compounds

Content (μg/mL)

I

II

III

IV

V

VI

VII

VII

EACP

caffeic acid

–

–

–

–

–

–

0.22

0.25

1.11

p-Coumaric acid

–

–

–

–

–

–

1.45

0.22

1.33

ferulic Acid

–

–

–

–

–

–

0.03

0.13

0.95

isoferulic acid

66.28

3.78

7.35

22.42

38.47

5.98

0.01

0.07

0.86

3,4-dihydroxybenzoic acid

19.03

8.11

4.38

2.34

6.71

9.05

0.09

0.12

–

trans-Cinnamic acid

–

–

–

–

–

–

0.03

0.33

–

phenethyl caffeate

–

1.04

6.72

9.02

4.04

28.67

9.51

13.12

30.00

apigenin

–

128.22

26

14.56

3.53

45.2

47.01

86.82

94.09

chrysin

–

12.8

8.57

0.22

0.39

78.39

151.52

276.93

95.54

quercetin

–

48.29

66.54

10.25

–

–

–

 

7.18

kaempferol

–

25.44

90.48

49.35

12.17

12.72

2.39

6.15

18.39

galangin

40.56

1.59

92.11

24.09

20.83

33.54

5.32

9.53

28.89

pinocembrin

–

1.35

1.99

1.18

17.09

–

33.50

47.10

84.29

pinobanksin

47.46

79.29

193.88

263.47

114

70.74

11.18

15.59

44.17

luteolin

–

63.46

93.06

20.82

12.03

–

0.42

–

–