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Table 2 Antimicrobial activity of the investigated plants in agar diffusion test.

From: Studies of the in vitro anticancer, antimicrobial and antioxidant potentials of selected Yemeni medicinal plants from the island Soqotra

    Microbial strains tested Multiresistant strains tested
Plant species Extracts Extract yield in % S. a. B. c. M. f. E. c. P. e. C. m. S. e. 847 S. h. 535 S. a. NGR
Acacia pennivenia Methanolic
Hot aqueous
12.18
5.97
22
20
12
-
22
20
16
-
14
-
-
-
18
8
14
-
20
18
Acanthospermum hispidum Methanolic
Hot aqueous
16.14
7.22
16
12
-
-
22
15
-
-
-
-
-
-
18
8
12
-
20
12
Acridocarpus socotranus Methanolic
Hot aqueous
10.46
4.75
15
18
-
-
16
16
-
-
-
-
-
-
14
18
10
14
14
22
Aloe perryi Methanolic
Hot aqueous
20.27
18.82
-
-
-
-
-
-
-
-
-
-
-
-
18
-
10
-
20
14
Ballochia atro-virgata Methanolic
Hot aqueous
14.91
5.70
12
12
-
-
-
-
-
-
-
-
-
-
10
-
-
-
16
-
Blepharis spiculifolia Methanolic
Hot aqueous
5.04
5.51
12
-
-
-
-
-
-
-
-
-
-
-
10
-
-
-
16
-
Boswellia dioscorides Methanolic
Hot aqueous
40.45
14.31
18
11
16
8
20
12
8
-
10
-
10
-
28
28
18
16
38
28
Boswellia socotrana Methanolic
Hot aqueous
33.77
11.68
31
25
21
12
27
16
14
10
20
15
22
16
28
22
20
18
28
24
Capparis cartilaginea Methanolic
Hot aqueous
8.33
10.02
10
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Commiphora ornifolia Methanolic
Hot aqueous
19.50
10.72
16
11
13
8
19
12
-
-
-
-
-
-
18
18
14
10
18
20
Corchorus erodioides Methanolic
Hot aqueous
10.46
4.95
10
-
9
-
12
11
-
-
-
-
-
-
-
-
-
-
-
-
Croton socotranus Methanolic
Hot aqueous
14.91
6.78
10
-
8
-
15
-
-
-
-
-
-
-
18
20
10
10
24
24
Euclea divinorum Methanolic
Hot aqueous
21.85
4.13
24
16
12
-
18
-
11
-
15
-
10
-
24
12
16
-
26
20
Euphorbia socotrana Methanolic
Hot aqueous
19.74
11.75
16
-
11
-
18
-
-
-
-
-
-
-
20
20
12
12
26
26
Eureiandra balfourii Methanolic
Hot aqueous
11.60
8.58
10
12
-
-
-
15
-
-
-
-
-
-
-
-
-
-
-
-
Ficus cordata Methanolic
Hot aqueous
9.06
10.50
10
16
-
-
-
-
-
-
-
-
-
-
-
-
-
-
12
14
Glossonema revoili Methanolic
Hot aqueous
16.34
8.53
20
9
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Hibiscus noli-tangere Methanolic
Hot aqueous
10.61
4.92
10
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Hypoestes pubescens Methanolic
Hot aqueous
21.16
7.80
8
15
-
-
-
14
-
-
-
-
15
12
-
-
-
-
-
-
Lannea transulta Methanolic
Hot aqueous
8.04
9.15
13
14
-
-
14
16
-
-
-
-
-
12
16
22
-
12
16
22
Leucas samhaensis Methanolic
Hot aqueous
11.47
5.25
-
19
-
14
20
24
-
-
-
-
-
-
14
18
12
14
18
20
Leucas virgata Methanolic
Hot aqueous
14.11
3.37
18
17
11
-
17
15
-
-
-
-
-
-
16
20
12
12
22
26
Lycium sokotranum Methanolic
Hot aqueous
10.93
5.05
20
17
-
-
15
-
-
-
-
-
-
-
12
-
12
-
20
20
Maerua angolensis Methanolic
Hot aqueous
22.01
13.80
-
-
-
-
-
-
-
-
-
-
-
-
-
12
-
-
-
16
Rhus thyrsiflora Methanolic
Hot aqueous
5.88
11.50
20
20
12
12
18
21
-
-
-
-
-
-
18
20
14
16
24
26
Teucrium sokotranum Methanolic
Hot aqueous
12.42
4.43
17
22
14
10
22
15
-
-
-
-
-
-
14
18
10
14
16
20
Ampicillin 10 μg/disc
Gentamicin 10 μg/disc
Amphotericin 10 μg/disc
   28
N.T.
N.T.
24
N.T.
N.T.
30
N.T.
N.T.
N.T.
15
N.T.
N.T.
17
N.T.
N.T.
N.T.
10
-
N.T.
N.T.
-
N.T.
N.T.
-
N.T.
N.T.