Table 1.

Antibacterial activity of crude extract and fractions of rhizomes (Imipenem was used as standard drug and all the readings were recorded on the basis of zone of inhibition (mm) as compared to standard).

Bacteria	Standard zone of inhibition	Crude extract zone (mm)	n-hexane zone (mm)	Chloroform zone (mm)	Ethyl acetate zone (mm)	n-butanol zone (mm)	Aqueous zone (mm)
E. coli	30	0	0	0	0	0	0
B. subtillis	31	14.33 ± 0.57	0	0	12.66 ± 1.15	0	0
S. flexenari	33	0	0	0	11.33 ± 1.15	0	0
S. aureus	44	14.33 ± 0.57	0	0	22.33 ± 0.57	0	0
P. auriginosa	26	14.33 ± 0.57	0	0	0	0	0
S. typhi	41	0	0	0	0	0	0

6–9 mm: no activity; 12–15 mm: low activity; 15–18 mm: good activity; above 18 mm: significant activity.