Antibacterial Activity of Fistulin: A Protease Inhibitor Purified from the Leaves of Cassia fistula

Table 2

Antibacterial activity of fistulin.

Bacterial species	Zone of inhibition (mm)
	Crude	Partially purified fistulin	Purified fistulin	Streptomycin sulphate
Bacillus subtilis	3 ± 0.12	14 ± 0.30	18 ± 0.4	18 ± 0.43
Staphylococcus aureus	4 ± 0.33	13 ± 0.50	18 ± 0.43	18 ± 0.33
Klebsiella pneumoniae	3 ± 0.50	10 ± 0.66	14 ± 0.33	14 ± 0.66
Pseudomonas aeruginosa	2 ± 1.20	7 ± 0.66	12 ± 0.12	14 ± 0.33
Escherichia coli	4 ± 0.33	11 ± 0.43	16 ± 0.66	17 ± 0.26

All the values expressed are Mean ± S.D.