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. 2021 Apr 16;11(4):348. doi: 10.3390/life11040348

Table 2.

Antibacterial activity of the different types of A. paniculata extracts.

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.