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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