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http://dx.doi.org/10.5352/JLS.2009.19.3.366

Amylase Activity and Characterization of Microorganism Isolated from in Aquacultural Effluents Sediment Layer  

Kim, Man-Chul (Department of Aquatic Life Medicine, Faculty of Marine Science, Jeju National University)
Jang, Tae-Won (Department of Aquatic Life Medicine, Faculty of Marine Science, Jeju National University)
Harikrishnan, Ramasamy (Department of Aquatic Life Medicine, Faculty of Marine Science, Jeju National University)
Moon, Young-Gun (Department of Aquatic Life Medicine, Faculty of Marine Science, Jeju National University)
Song, Chang-Young (Department of Aquatic Life Medicine, Faculty of Marine Science, Jeju National University)
Kim, Gi-Young (Department of Marine Life Sciences, Jeju National University)
Heo, Moon-Soo (Department of Aquatic Life Medicine, Faculty of Marine Science, Jeju National University)
Publication Information
Journal of Life Science / v.19, no.3, 2009 , pp. 366-372 More about this Journal
Abstract
In the course of screening of useful enzyme-producing microorganisms from marine sedimentary layers, we isolated 2 amylase producing strains and tested their amylase producing activities. Analyses of 16S rDNA sequences and biochemical methods (BIOLOG) of two isolates showed that they were confirmed to be a gram positive Bacillus sp. and gram negative Pseudoalteromonas sp., respectively. Excellent amylase producing strains were termed Bacillus sp. ST-63 and Pseudoalteromonas sp. ST-140, and further studies were conducted on their amylase producing characteristics. Optimum conditions for cell growth in amylase activity were obtained when the isolate (Bacillus sp. ST-63 and Pseudoalteromonas sp. ST-140) was cultured at $30^{\circ}C$ and pH $7{\sim}8$.
Keywords
Amlyase; 16S rDNA; BIOLOG; Bacillus sp.; Pseudoalteromonas sp.;
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