are also found. The biochemical analysis was done to study the
virulence potential and confirmation of vibrio strains. All the 2
isolates of Vibrio sp are gramnegative short curved rods and they all
show darting type of motility. The breakdown of starch was rather
more complicated than that of sugars, because of their extensive
hydrolysis. In this study, the isolates showed positive for starch
hydrolysis. Casein is a milk protein composed of amino acid. The
hydrolysis of casein was mediated by the enzyme protease, which
clearly demonstrated by a clear envelop surroundings the bacterial
growth
The present study shows that the isolates were positive for
casein hydrolysis. Gelatin is a protein which can be attacked by
microorganisms, results from loss of its property to gel, by the
enzyme gelatinase. Lipid is the organic substances, which was hydrolyzed
by the enzyme, lipase. This shows a clear zone around the
growth. All the 2 isolates were positive for lipid hydrolysis.
V. cholerae and V. parahaemolyticus were fermented with sucrose,
dextrose, maltose and lactose which gives positive result for sucrose,
dextrose and maltose and gives negative result for lactose.
Indole is a putrefactive compound produced by the degradation of
the amino acid, tryptophan. In the present study, the Vibrio sp were
found positive for indole, which shows the ability of organisms to
degrade the amino acid to indole. The Vibrio strains show varying