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KMID : 0613819970070020107
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Journal of Life Science
1997 Volume.7 No. 2 p.107 ~ p.111
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Isolation and Characterization of Ammonia Oxidizing Bacteria, Nitrosomonas sp. PK1
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Abstract
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To remove dissolved NH$_{4}$$^{+}$ in the aquaculture system, one ammonia oxidizing bacterium, Nitrsomonas sp. PK1, was isolated from samples collected in many aquacultural place and sludges of waste water. The stationary phase of this atrain was reached after 9 days, and the maximum NO$_{2}$ production was shown from 3 days to 9 days. In the selective medium, 0.1% of glucose was the good carbon source for growth. However, the NO$_{2}$productivity was repressed by the addition of glucose to the medium. When Zn$^{++}$ ion was supplemented to the medium, growth and the NO$_{2}$ productivity was increased, 10mM of ZnCl$_{2}$ was the optimal concentration for growth and 1 mM of ZnCl$_{2}$ was the optimal concentration for the production of NO$_{2}$, respectively
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KEYWORD
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