ANTIMICROBIAL ACTIVITY OF MARINE BACTERIA EXTRACT FROM THE COASTAL AREA OF SERDANG BEDAGAI NORTH SUMATERA

Screening of marine bacteria shown thirty six isolates had inhibition zone around colony. Three potential isolates
SB5, BG3 and BG4 extracted with methanol, ethyl acetate extract and n-hexane. Ethyl acetate extract had antimicrobial activity
againts Staphylococcus aureus, Eschericia coli, Bacillus subtilus, while, n-hexane extract did not show antimicrobial activity
againts S. aureus, E. coli, B. Subtilus. Antimicrobial activity againts C. albicans was showed by methanol extract of BG4, ethyl
acetate extract of SB5 and BG3, and n-hexane of SB5 at high concentration. Ethyl acetate extract of BG4 and methanol, ethyl
acetate, n-hexane extract of SB5 showed antimicrobial activity againts Vibrio sp. antimicrobial activity SB5 extracted ethyl
acetate had antimicrobial activity againts gram positive bacteria, gram negative bacteria and yeast.