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Table 2 Total phenolic and flavonoid contents of 14 Thai plants obtained from different solvents

From: Thai plants with high antioxidant levels, free radical scavenging activity, anti-tyrosinase and anti-collagenase activity

Extract

Total phenolic content (mg GAE/g dry material)

Total flavonoid content (mg QE/g dry material)

Petroleum ether

Dichloromethane

Ethanol

Petroleum ether

Dichloromethane

Ethanol

Annona squamosa L.

4.13 ± 0.38

9.26 ± 0.29

62.67 ± 2.32

8.91 ± 0.77

9.70 ± 0.24

12.99 ± 0.65

Ardisia elliptica Thunb

22.26 ± 1.77

59.97 ± 2.90

84.00 ± 6.23

19.87 ± 1.26

23.14 ± 1.10

18.56 ± 1.45

Croton roxburghii N.P.Balakr

3.57 ± 0.25

9.60 ± 0.46

19.41 ± 0.81

4.25 ± 0.35

12.34 ± 0.29

7.54 ± 0.35

Croton sublyratus Kurz

4.73 ± 0.38

6.74 ± 0.51

16.28 ± 0.29

18.55 ± 0.53

20.78 ± 1.49

14.86 ± 0.95

Datura metel L.

8.30 ± 0.29

11.43 ± 0.17

18.92 ± 1.50

17.65 ± 1.62

16.77 ± 1.30

2.04 ± 0.16

Garcinia mangostana Linn.

19.75 ± 1.44

31.07 ± 2.30

80.79 ± 2.94

5.35 ± 0.10

11.13 ± 0.37

3.20 ± 0.05

Gynura pseudochina (L.) DC.

3.26 ± 0.11

9.18 ± 0.65

12.76 ± 0.81

4.87 ± 0.35

18.60 ± 1.06

3.69 ± 0.21

Hibiscus mutabilis L.

3.44 ± 0.14

7.14 ± 0.48

17.05 ± 0.64

3.71 ± 0.24

18.79 ± 1.78

3.71 ± 0.09

Ipomoea pes-caprae (L.) R.br.

4.72 ± 0.29

11.18 ± 0.53

37.91 ± 3.36

27.48 ± 2.59

18.68 ± 0.66

17.66 ± 0.29

Phyllanthus acidus (L.) Skeels

4.65 ± 0.46

10.05 ± 0.74

50.52 ± 2.66

NA

15.80 ± 1.04

11.74 ± 0.74

Rhinacanthus nasutus (L.) Kurz

5.04 ± 0.30

9.14 ± 0.39

17.09 ± 1.44

16.98 ± 0.40

19.88 ± 1.98

9.53 ± 0.26

Senna alata (L.) Roxb.

4.59 ± 0.21

9.48 ± 0.44

36.83 ± 2.30

7.71 ± 0.36

13.97 ± 1.10

31.38 ± 0.81

Stemona curtisii Hook.f.

2.51 ± 0.22

7.76 ± 0.30

59.67 ± 3.28

NA

NA

14.50 ± 0.86

Streblus asper Lour.

4.19 ± 0.30

8.22 ± 0.39

23.10 ± 1.84

NA

18.66 ± 1.28

11.29 ± 1.04

  1. Each value is mean ± S.D. of triplicate independent analyses. GAE Gallic Acid Equivalent, QE Quercitin equivalent, NA Not Available