Table 3.

Antibacterial activity of p-HCAM obtained using PTAL (zone of inhibition in mm).

Bacterial cultures	1.0% p-HCAM	3.0% p-HCAM	5.0% p-HCAM
B. cereus	1 mm	5 mm	7 mm
S. aureus	–	1 mm	5 mm
E. coli	–	1 mm	6 mm
K. pneumoniae	–	1 mm	5 mm
P. vulgaris	4 mm	7 mm	8 mm
P. aeruginosa	–	–	–

–indicates, no significant antibacterial activity. The solvent in which p-HCAM was dissolved, ethanol, did not show antibacterial activity (no zone of inhibition was obtained). Standard antibiotic, Ampicillin, gave ∼9 mm zone of inhibition.