Table 2.
Plant Part | Extraction Methods | Assay | Number of Test MOs | Most Inhibited Mos | MEIC | ZOI (mm or %) | Remarks | Reference |
---|---|---|---|---|---|---|---|---|
AeP | Chloroform | AWDM | 9 | Enterobacter faecalis | 250 μg/mL | 35 | Seven out of 9 pathogens were inhibited that were comparable with antibiotic, amikacin | [203] |
L | Water | DDM | 5 |
P. aeruginosa S. aureus MRSA |
2 µg/disc 1000 µg/disc 250 µg/disc |
8 ± 0.1 6 ± 0.1 8 ± 0.1 |
No activity against K. pneumoniae and E. coli. | [200] |
L | 70% Methanol | Two-fold broth MDM | 10 |
Edwardsiella tarda E. coli Flavobacterium sp. P. aeruginosa Vibrio cholerae |
31.5 mg/L | - | All the test MOs were inhibited | [204] |
WP | DCM | DDM | 12 |
E. faecalis
S. aureus S. saprophyticus |
1000 µg/disc | 21.33 ± 1.53 20.00 ± 1.50 19.33 ± 1.15 |
Gram-negative bacteria were more resistant. | [205] |
WP | Methanol |
E. faecalis
S. aureus S. saprophyticus |
1000 µg/disc | 24.00 ± 0.00 22.00 ± 0.00 22.00 ± 1.53 |
No activity observed against S. saprophyticus at 250 µg/disc | |||
WP | Aqueous |
M. luteus
S. pyogenes E. faecalis |
1000 µg/disc | 23.17 ± 0.76 22.67 ± 0.58 22.00 ± 1.00 |
No activity was observed against M. luteus, S. pyogenes, E. faecalis and K. pneumoniae at 250 µg/disc | |||
R | Hexane | Broth MDM | 4 |
B. pumilus
B. subtilis E. coli Proteus vulgaris |
100 mg/mL 100 mg/mL 200 mg/mL 200 mg/mL |
12 12 13 12 |
Hexane and methanolic extracts were more efficient against all tested MOs | [206] |
R | Methanol | Broth MDM | 4 |
E. coli
B. subtilis Proteus vulgaris |
100 mg/mL 200 mg/mL 200 mg/mL |
12 12 13 |
||
WP | Methanol | CPADM | 5 | S. aureus | 1000 μg/mL | 19.67 ± 0.76 | Gram-negative bacteria were more resistant to methanol extracts | [174] |
AeP | Ethanol | AWDM | 11 |
S. typhi
V. cholerae |
200 μg/mL | 14 13 |
The ethanol extract was efficient | [173] |
L | Methanol | AWDM | 6 | S. aureus | 50 mg/mL | 24 ± 0.2 | Inhibit both Gram-positive and negative bacteria, but gram-negative bacteria are less susceptible | [201] |
WP | DCM | DDM | 10 | S. aureus | 1000 μg/disc | 20 ± 1.50 | Aqueous extracts were more effective compared to the DCM and methanol extracts | [207] |
Methanol |
S. aureus
S.saprophyticus |
1000 μg/disc | 22 ± 0.00 22 ± 1.53 |
|||||
Aqueous | M. luteus | 1000 μg/disc | 23.17 ± 0.76 | |||||
WP | Methanol | CPADM | 5 |
S. aureus
M. luteus |
1000 μg/mL | 19.67 ± 0.76 18.50 ± 0.58 |
Effective against all test MOs | [175] |
L | Chloroform | AWDM | 6 | B. subtilis | 22 ± 0.071 | Chloroform extract of leaves was more efficient to inhibit all tested MOs than other extracts | [208] | |
Aqueous | 6 |
K. pneumoniae
S. aureus B. subtilis |
12 ± 0.344 12 ± 0.447 12 ± 0.084 |
|||||
Acetone | 6 | S. aureus | 13 ± 0.416 | |||||
Ethyl acetate | 6 | B. subtilis | 15 ± 0.152 | |||||
Petroleum ether | - | - | - | No inhibitory activity | ||||
R | Chloroform | AWDM | 6 | B. subtilis | 18 ± 0.055 | Chloroform extract of roots was more efficient to inhibit all tested MOs than other extracts | [208] | |
Aqueous | K. pneumoniae | 14 ± 0.297 | ||||||
Acetone | S. aureus | 15 ± 0.055 | ||||||
Ethyl acetate | B. subtilis | 10 ± 0.626 | ||||||
DMSO | S. aureus | 14 ± 0.187 | ||||||
Petroleum ether | - | - | - | No inhibitory activity | ||||
S | Ethyl acetate | AWDM | 6 |
S. aureus
B. subtilis |
8 ± 0.303 8 ± 0.327 |
Chloroform extract of stems was more efficient to inhibit all tested MOs than other extracts | [208] | |
DMSO | S. aureus | 16 ± 0.332 | ||||||
Acetone | S. aureus | 16 ± 0.374 | ||||||
Chloroform | B. subtilis | 24 ± 0.219 | ||||||
Aqueous | B. subtilis | 13 ± 0.373 | ||||||
Petroleum ether | - | - | - | No inhibitory activity |
AeP: Aerial part, L: Leaves, R: Root, S: Stem/bark, WP: Whole plant, AWDM: Agar Well Dilution Method, CPADM: Cup-plate Agar Diffusion Method, DCM: Dichloromethane, DDM: Disc Diffusion Method, MEIC: Most Effective Inhibitory Concentration, DMSO: Dimethyl Sulfoxide, FA: Fluorogenic Assay, MDM: Microdilution Method, MOs: Microorganisms, NA: No activity, ZOI: Zone of Inhibition.