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Isolation and Nitrate Reduction Characteristics of Aerobic Denitrifier Pseudomonas sp. DN-9
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 Title & Authors
Isolation and Nitrate Reduction Characteristics of Aerobic Denitrifier Pseudomonas sp. DN-9
Cho Sun-Ja; Jung Yong-Ju; Lee Sang-Joon;
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 Abstract
From sludge of S municipal wastewater treatment plant in Busan, Korea, we isolated the denitrifier DN-9 which showed the ability of denitrification under aerobic conditionby the color change and gas formation in liquid culture with Giltay medium. The isolated strain was identified as Pseudomonas sp. DN-9 on the basis of the morphological, physiological, biochemical and nucleotide sequence analysis of l6S rRNA. The isolated strain, Pseudomonas sp. DN-9, has cytochrome , nirS of nitrite reductase. By the co-existance of additional ammonium and nitrate ion, the strain was not affected largely on growth in SL series broth. It seemed the result of denitrification. Although Pseudomonas sp. DN-9 has a good nitrate reduction activity under aerobic condition, the activity is less than Pseudomonas stutzeri in same cultivation condition. However, Escherichia coli had little the activity of aerobic denitrification and Pseudomonas putida showed lower activity of aerobic denitrification than Pseudomonas sp. DN-9 and Pseudomonas stutzeri in this study.
 Keywords
Aerobic denitrifier;Nitrate reduction;Pseudomonas sp.;
 Language
Korean
 Cited by
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