Hemolysin, Protease, and EPS Producing Pathogenic Aeromonas hydrophila Strain An4 Shows Antibacterial Activity against Marine Bacterial Fish Pathogens

Table 1

Comparison of antibacterial activity of Aeromonas hydrophila strain An4 with commonly used antibiotics on indicator bacterial isolates.

Antibiotics	Concent-ration (𝜇g/mL)	Zone of inhibition (mm) Indicator bacteria
		Vibrio parahaemolyticus strain An3	Acinetobacter sp. strain An2	Alteromonas aurentia strain SE3	Staphylococcus arlettae strain An1
Ciprofloxacin-(Cf)	10	3	4	0	0
Cotrimazine-(Cm)	25	12	9	6	6
Kanamycin-(K)	30	4	6	10	11
Nitrofurantoin-(Nf)	300	2	7	0	0
Streptomycin-(S)	10	8	14	6	10
Tetracycline-(T)	30	6	14	2	1
Ampicillin-(A)	10	0	0	14	0
Cephalothin-(Ch)	5	0	0	13	3
Colistin methane sulphonate-(Cl)	25	1	1	7	9
Gentamycin-(G)	10	4	7	0	0
Streptomycin-(S)	10	3	5	2	3.5
Cotrimoxazol-(Co)	25	8	12	7	7
Cell-free supernatant	100 𝜇L	0	0	0	0
Bacterial crude extract	100 𝜇L	10	11	12	10.5
Ethyl acetate	100 𝜇L	0	0	0	0