Abstract:
The marine bacteria were isolated from Kemaman Mangrove soils in searching for the
antimicrobial properties. Out of 34 marine bacteria isolated from two mangrove samples
namely KMM I and KMM2 respectively, only five isolates or fifteen percent of all isolate
were shown to have positive antimicrobial activity. The isolates M4, M 16, M 17, N6 and
N8 showed moderate positive antimicrobial activities against six target bacteria and one
yeast target using modified agar diffusion method. Target bacteria that were used for
screening were obtained from Sultanah Nur Zahirah Hospital. Isolates M4 showed the
highest antimicrobial activity on Klebsiella pneumonia target bacteria with 22.5 mm
inhibition zone susceptibility. All positive isolates were characterized by biochemical
tests and identified using API kits except for isolate M4 which characterized by
biochemical tests. Furthermore, isolates N6 and M 17 were identified as Aeromonas
hydrophilalcaviae at 99.7 % confidence level and possible to be Vibrio fluvialis. Isolate
N8 was identified as Serratia spat 99.5% confident level. The isolate M 16 was identified
as Micrococcus spp at 99.9% confident level. From this study, there is potential on
antimicrobial activity showed from marine bacteria isolated from mangrove soil in order
to develop new antimicrobial compound. Results suggest that marine bacterium isolates
particularly gram positive bacteria, believe to produce antimicrobial compound and are
potentially useful for novel bioactive compound discovery.
