Abstract

• Mangrove soil samples were collected from four different station of U-To Creek at Shwe thaung yan Township (Ma-Gyi), Ayeyawady Region. These samples were cultured on Nutrient Agar (NA) and American Type Culture Collection (ATCC) medium. A total of 26 bacterial colonies were obtained and 14 strains from Nutrient Agar (NA) and 12 isolates from (ATCC) medium. Isolated strains were designated as ZM 1 to 26. These isolated strains were tested by using ten different test organisms from one day to three days old culture. Five strains showed the antimicrobial activity. Among them, ZM-7 showed the highest antimicrobial activity (24.34 mm) on Escherichia coli and (22.63 mm) on Candida albicans. Therefore, ZM-7 was selected and characterized by morphological, microscopial, Gram staining and biochemical characteristics. In the colony morphology, ZM-7 was medium in size, entire, creamy, flat and creamy glistening. In the microscopical and biochemical characteristics, ZM-7 was Gram positive and short rod, catalase positive, aerobes and acid was produced in the sugar fermentation and gas did not produce. According to the results, ZM-7 was characterized as the possible genus Bacillus.