Chemical Profiling and Biological Activities on Nepalese Medicinal Plant Extracts and Isolation of Active Fraction of Nyctanthes arbor-tristis
Table 5
Antimicrobial activity of different plant extracts against pathogenic bacteria.
Plant extracts
Bacteria
ZOI (mm) shown by the extracts at a concentration of 100 mg/mL
ZOI (mm) shown by chloramphenicol as control at 100 mg/mL
Neolamarckia cadamba
E. coli
—
26
S. aureus
—
35
Desmostachya bipinnata
E. coli
—
26
S. aureus
—
35
Nyctanthes arbor-tristis
E. coli
22
26
S. aureus
26
35
Phoenix humilis
E. coli
11
26
S. aureus
12
35
Pogostemon benghalensis
E. coli
—
26
S. aureus
—
35
Equisetum debile
E. coli
9
26
S. aureus
12
35
Litsea monopetala
E. coli
11
26
S. aureus
14
35
Spilanthes uliginosa Swartz
E. coli
—
26
S. aureus
—
35
Mallotus philippensis (seed)
E. coli
—
26
S. aureus
—
35
Mallotus philippensis (seed cover)
E. coli
14
26
S. aureus
24
35
Negative control = DMSO (no effective antibacterial activity); ZOI = zone of inhibition; E. coli: Gram-negative organism; S. aureus: Gram-positive organism.