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Table 5 Inhibition of tyrosinase and collagenase activities by Thai plant extracts

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

Plant

Extract

Tyrosinase inhibition (%)

Collagenase inhibition(%)

Annona squamosa Linn.

Ethanol

21.92 ± 1.45**

55.12 ± 3.18***

Ardisia elliptica Thunb.

Petroleum ether

19.42 ± 1.21**

NA

Ardisia elliptica Thunb.

Dichloromethane

21.40 ± 1.61**

NA

Ardisia elliptica Thunb.

Ethanol

49.54 ± 1.23***

94.88 ± 6.93***

Croton sublyratus Kurz

Ethanol

NA

24.14 ± 0.98**

Datura metel L.

Ethanol

20.91 ± 1.70**

NA

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

Ethanol

23.01 ± 1.65**

NA

Phyllanthus acidus (L.) Skeels.

Ethanol

42.92 ± 3.85***

NA

Rhinacanthus nasutus (L.) Kurz

Ethanol

64.68 ± 5.46***

NA

Senna alata (L.) Roxb.

Ethanol

23.49 ± 1.09**

41.49 ± 2.63***

Kojid acid (tyrosinase inhibitor)

 

93.38 ± 1.63***

 

Epigallatecathechin gallate

(collagenase inhibitor)

 

–

90.51 ± 2.79***

  1. Each value is mean ± S.D. of triplicate independent analyses. Significantly different from the control group
  2. (* P < 0.05, ** P < 0.01, *** P < 0.001). NA not available