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http://dx.doi.org/10.5187/JAST.2010.52.1.065

Isolation of Bacillus amyloliquefaciens ATC6 Producing Acidic Cellulase  

Lee, Se-Hyung (Department of Animal Resources Science, College of Bio-Resources Science, Dankook University)
Chae, Jong-Pyo (Department of Animal Resources Science, College of Bio-Resources Science, Dankook University)
Kim, Min-Jeong (Department of Animal Resources Science, College of Bio-Resources Science, Dankook University)
Kang, Dae-Kyung (Department of Animal Resources Science, College of Bio-Resources Science, Dankook University)
Publication Information
Journal of Animal Science and Technology / v.52, no.1, 2010 , pp. 65-70 More about this Journal
Abstract
A bacterium producing acidic cellulase was isolated from pig feces. The isolate, ATC6 strain, was found to be Gram-positive, non-motile, catalase-positive, and spore-forming stain. Under an electron microscope, the cells were observed to be rod-shaped. The isolate was identified as Bacillus amyloliquefaciens ATC6 on the basis of morphological and biochemical properties as well as 16S rRNA gene sequences. Optimum pH and temperature for the cellulase activity of the culture supernatant of B. amyloliquefaciens ATC6 were found to be pH 4.5 and $55^{\circ}C$, respectively. More than 80% of its maximum activity was maintained at pH 4.0. The cellulase activity was maintained at temperatures ranging from 35 to $55^{\circ}C$ after 2 h incubation at pH 4.5, whereas it's activity decreased rapidly at $65^{\circ}C$.
Keywords
Enzyme; Acidic cellulase; Bacillus amyloliquefaciens;
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