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Table 2 The effect of the plant extracts (200 μg/ml) on enzyme activities

From: In vitro determination of the anti-aging potential of four southern African medicinal plants

Plant species Plant part Extract type Anti-elastase Anti-collagenase Anti-hyaluronidase
Clerodendrum glabrum roots MeOH 5.92 ± 4.75 ng ng
EtOAc 15.30 ± 1.96 31.70 ± 0.54 ng
stems MeOH 13.35 ± 0.56 68.09 ± 8.57 ng
EtOAc 89.38 ± 3.24 88.64 ± 0.53 8.11 ± 0.95
fruits MeOH 49.38 ± 3.82 72.54 ± 9.83 0.51 ± 0.72
EtOAc 87.95 ± 0.10 26.29 ± 1.17 2.50 ± 3.53
bark MeOH 13.52 ± 6.96 58.96 ± 8.65 5.19 ± 1.61
EtOAc 81.46 ± 4.78 81.55 ± 4.03 ng
Peltophorum africanum leaves MeOH 55.83 ± 0.04 82.13 ± 3.64 49.32 ± 6.58
EtOAc 80.20 ± 1.02 75.26 ± 7.38 2.69 ± 3.80
seeds MeOH 85.17 ± 3.20 80.39 ± 9.18 ng
EtOAc 87.09 ± 1.22 77.34 ± 4.45 2.18 ± 0.13
bark MeOH 69.36 ± 4.33 78.44 ± 3.18 48.46 ± 6.77
EtOAc 86.27 ± 3.63 88.27 ± 1.77 23.24 ± 0.18
stems MeOH 64.50 ± 3.41 74.14 ± 1.08 0.95 ± 0.76
EtOAc 84.40 ± 3.97 83.25 ± 3.57 13.78 ± 0.28
Psychotria capensis roots MeOH 45.90 ± 9.84 59.41 ± 6.73 12.86 ± 3.42
EtOAc 59.60 ± 7.57 28.42 ± 5.23 2.28 ± 3.22
stems MeOH 42.98 ± 7.29 56.45 ± 9.26 5.00 ± 0.69
EtOAc 56.58 ± 2.11 29.98 ± 0.81 ng
leaves MeOH 3.28 ± 4.63 ng 52.98 ± 0.66
EtOAc 92.84 ± 1.13 63.07 ± 9.15 3.13 ± 4.42
seeds MeOH 44.16 ± 2.99 78.36 ± 1.50 ng
EtOAc 70.67 ± 4.80 69.48 ± 5.91 ng
Schotia brachypetala bark MeOH 75.32 ± 6.91 77.51 ± 0.28 75.13 ± 7.49
EtOAc 93.73 ± 0.51 87.61 ± 6.72 ng
leaves MeOH 82.54 ± 3.01 81.35 ± 2.52 20.36 ± 1.92
EtOAc 84.22 ± 4.79 84.70 ± 1.33 6.29 ± 1.17
Controls (10 μg/ml)      
Elafin    93.09 ± 4.10 N/A N/A
N-Methoxysuccinyl-Ala-Ala-Pro-Chloro    91.54 ± 4.14 N/A N/A
EDTA    N/A 83.75 ± 2.89 N/A
Sodium aurothiomalate    N/A N/A 100 ± 0.01
  1. Results are given as percentage inhibition ± Standard Deviation, t.LSD (least significant difference)p=0.05 = 8.7146. Some extracts showed negligible enzyme activity (< 0.01%) and these are represented by ng, N/A represents not applicable.