Antimicrobial Activity of Marine Microorganisms Isolated from the Coast of the Arabian Gulf

ISSN: 0973-7510

E-ISSN: 2581-690X

Abdurahman H. Hirad¹, Ali H. Bahkali¹, Mohamed A. Khiyami², Abdallah M. Elgorban³ and Basheer A. Al-Sum¹

¹Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455 Riyadh – 11451, King Saud University, Saudi Arabia.

²King Abdulaziz City for Science and Technology, P.O. 6086, Riyadh – 11442, Saudi Arabia.

³Center of Excellence in Biotechnology Research, King Saud University, P.O. Box 2455, Riyadh – 11451, Saudi Arabia.

J Pure Appl Microbiol. 2013;7(2):1159-1164

Received: 20/03/2013 | Accepted: 10/05/2013 | Published: 30/06/2013

Abstract

Forty-seven isolates of marine microorganisms were isolated from water, sediment and leaf litter, analyzed using the halo zones on cross streak plate assay, agar-overlay plate assay, agar diffusion method and Liquid (turbidity) assay in terms of their general inhibition effects to test bacteria (Campylobacter jejuni, Bacillus cereus, Pseudomonas. aeroginosa ATCC 15442, Salmonella enteric ATCC 13311 and Haemophilus infuenzae). The results demonstrated that most isolates are effective against pathogens bacteria. Based on biochemical and physiological properties, they were classified as Bacillus licheniformis KSAWD3. This isolate exerted board spectrum antibiotic activities against pathogenic bacteria when compared with the commercial antibiotics used in this study.

Keywords

Antimicrobial, Marine microorganism, Pathogenic bacteria

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