Table 2.
Minimal inhibitory concentration (MIC in μg/mL) and total activity (TA in mL/g) of acetone leaf extracts from nine plants of the Fabaceae family against bacterial strains
|
Plant name |
Extraction yield (%) |
ME (mg) |
Microorganisms |
|||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| |
|
|
S. aureus
|
E. faecalis
|
B. cereus
|
E. coli
|
P. aeruginosa
|
S. typhimurium
|
||||||
| MIC | TA | MIC | TA | MIC | TA | MIC | TA | MIC | TA | MIC | TA | |||
|
Baphia racemosa |
3.7 |
37 |
310 |
119.35 |
160 |
231.25 |
625 |
59.20 |
625 |
59.20 |
>1000 |
<37 |
625 |
59.20 |
|
Crotalaria capensis |
4.6 |
46 |
625 |
73.60 |
80 |
575 |
310 |
148.39 |
625 |
73.60 |
625 |
73.60 |
20 |
2300 |
|
Dalbergia nitidula |
4.2 |
42 |
160 |
262.5 |
160 |
262.5 |
80 |
525 |
160 |
262.5 |
310 |
135.48 |
160 |
262.5 |
|
Erythrina caffra |
3.9 |
39 |
>1000 |
<39 |
80 |
487.5 |
310 |
125.81 |
160 |
243.75 |
160 |
243.75 |
310 |
125.81 |
|
Indigofera cylindrica |
1.9 |
19 |
625 |
30.40 |
310 |
61.29 |
160 |
118.75 |
310 |
61.29 |
310 |
61.29 |
40 |
475 |
|
Lonchocarpus nelsii |
0.9 |
9 |
>1000 |
<9 |
80 |
112.5 |
625 |
14.40 |
625 |
14.40 |
>1000 |
<9 |
80 |
112.5 |
|
Podalyria calyptrata |
3.4 |
34 |
>1000 |
<34 |
625 |
54.40 |
>1000 |
<34 |
310 |
109.68 |
>1000 |
<34 |
160 |
212.5 |
|
Virgilia divaricata |
8.9 |
89 |
310 |
287.1 |
625 |
142.40 |
80 |
1112.5 |
310 |
287.1 |
>1000 |
<89 |
80 |
1112.5 |
|
Xylia torreana |
1.2 |
12 |
310 |
38.71 |
160 |
75 |
160 |
75 |
310 |
38.71 |
310 |
38.71 |
160 |
75 |
| Gentamicin | nd | nd | 0.2 | nd | 0.2 | nd | 0.8 | nd | 0.4 | nd | 0.2 | nd | 1.56 | nd |
Mass in mg extracted from 1 g (ME).
Values in bold indicate MICs lower than 100 μg/mL and total activity higher than 1000 ml/g, nd: not determined.