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Selection of a Mutant Strain with High Yield of Cellulose Production Derived from $Acetobacter$ sp. A9  

Lee, O-Mi (Korea Atomic Energy Reserch Institute, Advanced Radiation Technology Institute)
Son, Hong-Joo (Department of Life Science and Environmental Biochemistry, Pusan National University)
Lee, Sang-Joon (Department of Microbiology, Pusan National University)
Publication Information
Korean Journal of Environmental Biology / v.29, no.4, 2011 , pp. 321-325 More about this Journal
Abstract
The mutant strain M6 derived from Acetobacter sp. A9, which produces high levels of the bacterial cellulose derived by random mutagenesis with N-methyl-N'-nitro-N-nitrosoguanidine or UV treatment, was selected by a Hestrin and Schramm medium (HSB) plate assay. The characterization of the cellulose production was studied in flask culture to improve the productivity of bacterial cellulose by $Acetobacter$ sp. A9 and mutant strain M6. The yield of cellulose production was superior to mutant M6 than $Acetobacter$ sp. A9. Cellulose was produced 0.12 g $L^{-1}$ by $Acetobacter$ sp. A9 at HS medium and the mutant M6 produced the cellulose 6.95 g $L^{-1}$at HS medium. Strain M6 produced less amount of gluconic acid than A9, thus showing that cellulose production is negatively relted with the gluconic acid production.
Keywords
Acetobater sp.; bacterial cellulose; cellulose negative mutant; gluconic acid;
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