Plant species | Extracts | Radical scavenging activity in % | MIC in μg/ml | ||||||
---|---|---|---|---|---|---|---|---|---|
 |  | 10 (μg/ml) | 50 (μg/ml) | 100 (μg/ml) | 500 (μg/ml) | 1000 (μg/ml) | S. aureus | B. subtilis | M. flavus |
Acacia pennivenia | Methanolic Hot aqueous | 25.4 4.8 | 78.5 29.2 | 88.9 31.1 | 95.0 42.8 | 94.0 67.0 | 250 500 | 500 1000 | 250 500 |
Acanthospermum hispidum | Methanolic Hot aqueous | 2.8 5.2 | 13.8 11.6 | 25.9 14.4 | 55.5 26.3 | 94.7 27.4 | 500 > 1000 | 1000 > 1000 | 500 > 1000 |
Acridocarpus socotranus | Methanolic Hot aqueous | 5.1 0.6 | 40.8 6.7 | 80.9 37.6 | 92.6 46.5 | 94.6 45.3 | 250 250 | 1000 > 1000 | 250 250 |
Aloe perryi | Methanolic Hot aqueous | 6.7 2.1 | 19.8 6.4 | 28.7 20.8 | 92.4 36.4 | 94.1 45.9 | > 1000 > 1000 | > 1000 > 1000 | > 1000 > 1000 |
Ballochia atro-virgata | Methanolic Hot aqueous | 2.1 2.0 | 5.3 2.7 | 45.7 34.5 | 56.8 43.7 | 94.2 36.7 | > 1000 > 1000 | > 1000 > 1000 | > 1000 > 1000 |
Blepharis spiculifolia | Methanolic Hot aqueous | 14.8 1.6 | 13.3 4.4 | 25.1 34.3 | 64.6 38.3 | 91.5 46.8 | > 1000 > 1000 | > 1000 > 1000 | > 1000 > 1000 |
Boswellia dioscorides | Methanolic Hot aqueous | 25.8 7,8 | 89.8 39.0 | 96.1 65.9 | 96.3 68.2 | 96.8 74.6 | 125 500 | 500 1000 | 125 500 |
Boswellia socotrana | Methanolic Hot aqueous | 26.1 2.9 | 88.2 30.9 | 94.6 58.5 | 94.9 62.1 | 95.1 75.8 | 125 250 | 250 500 | 125 250 |
Capparis cartilaginea | Methanolic Hot aqueous | 0.2 3.1 | 3.8 1.1 | 2.1 22.8 | 51.2 27.5 | 87.6 28.2 | > 1000 > 1000 | > 1000 > 1000 | > 1000 > 1000 |
Commiphora ornifolia | Methanolic Hot aqueous | 20.8 10.6 | 85.9 25.2 | 95.0 49.1 | 95.4 66.2 | 95.2 72.9 | 250 500 | 500 1000 | 250 500 |
Corchorus erodioides | Methanolic Hot aqueous | 10.4 4.2 | 14.3 5.1 | 27.6 37.6 | 95.1 57.9 | 94.1 59.7 | > 1000 > 1000 | > 1000 > 1000 | > 1000 > 1000 |
Croton socotranus | Methanolic Hot aqueous | 5.3 2.0 | 12.6 2.9 | 22.2 10.1 | 78.9 23.5 | 93.1 26.4 | 500 > 1000 | 1000 > 1000 | 500 > 1000 |
Euclea divinorum | Methanolic Hot aqueous | 3.1 14.3 | 10.6 27.1 | 36.2 41.5 | 93.1 52.6 | 88.6 56.1 | 250 > 1000 | 1000 > 1000 | 500 > 1000 |
Euphorbia socotrana | Methanolic Hot aqueous | 16.7 1.9 | 67.4 8.8 | 95.5 28.7 | 96.3 36.2 | 95.2 40.1 | 500 > 1000 | 1000 > 1000 | 500 > 1000 |
Eureiandra balfourii | Methanolic Hot aqueous | 15.0 7.3 | 17.8 23.0 | 8.3 35.4 | 19.1 42.7 | 57.7 41.0 | > 1000 > 1000 | > 1000 > 1000 | > 1000 > 1000 |
Ficus cordata | Methanolic Hot aqueous | 2.5 1.6 | 12.5 9.3 | 31.0 16.4 | 89.2 18.9 | 91.6 20.4 | > 1000 > 1000 | > 1000 > 1000 | > 1000 > 1000 |
Glossonema revoili | Methanolic Hot aqueous | 1.7 0.3 | 14.9 2.7 | 26.8 2.5 | 38.6 7.8 | 76.4 8.1 | > 1000 > 1000 | > 1000 > 1000 | > 1000 > 1000 |
Hibiscus noli-tangere | Methanolic Hot aqueous | 0.6 1.4 | 7.3 0.8 | 18.4 2.8 | 85.9 5.6 | 89.0 6.6 | > 1000 > 1000 | > 1000 > 1000 | > 1000 > 1000 |
Hypoestes pubescens | Methanolic Hot aqueous | 1.5 2.6 | 4.0 4.2 | 16.6 3.1 | 38.7 16.1 | 72.6 18.3 | > 1000 1000 | > 1000 > 1000 | > 1000 500 |
Lannea transulta | Methanolic Hot aqueous | 21.9 36.7 | 64.2 33.2 | 95.4 37.2 | 92.1 32.3 | 98.6 29.9 | 1000 1000 | > 1000 > 1000 | 1000 1000 |
Leucas samhaensis | Methanolic Hot aqueous | 2.3 3.8 | 9.6 5.6 | 8.0 37.3 | 61.7 49.3 | 88.8 47.1 | > 1000 500 | > 1000 1000 | 500 500 |
Leucas virgata | Methanolic Hot aqueous | 1.5 26.2 | 1.1 34.8 | 2.8 39.5 | 27.6 44.0 | 81.9 51.9 | 500 500 | > 1000 > 1000 | 1000 500 |
Lycium sokotranum | Methanolic Hot aqueous | 5.6 26.5 | 27.8 30.3 | 29.8 31.2 | 91.4 37.4 | 94.2 39.5 | 500 1000 | 1000 > 1000 | 500 > 1000 |
Maerua angolensis | Methanolic Hot aqueous | 13.8 29.1 | 19.3 65.1 | 32.0 69.1 | 52.5 68.3 | 82.3 73.9 | > 1000 > 1000 | > 1000 > 1000 | > 1000 > 1000 |
Rhus thyrsiflora | Methanolic Hot aqueous | 3.8 1.1 | 29.4 9.3 | 55.9 12.8 | 95.6 22.4 | 95.4 30.5 | 500 500 | > 1000 1000 | 500 500 |
Teucrium sokotranum | Methanolic Hot aqueous | 3.4 24.2 | 2.8 28.7 | 16.4 38.2 | 41.0 47.6 | 92.1 61.4 | 500 250 | 1000 1000 | 500 500 |
Ascorbic acid | Â | 42.8 | 94.2 | 96.8 | 96.6 | 96.9 | Â | Â | Â |