An aerobic formate-utilizing bacterium,Cupriavidus sp., isolated from activated sludge of wastewater treatment |
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| Authors: | Retno Wahyu Nurhayati Yoshihiro Ojima Saori Kitatsuji Prayoga Suryadarma Masahito Taya |
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| Affiliation: | 1. Division of Chemical Engineering, Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama-cho, Toyonaka, Osaka, 560-8531, Japan
2. Department of Agroindustrial Technology, Faculty of Agricultural Technology, Bogor Agricultural University, Jl. Raya Darmaga Kampus IPB Darmaga, Bogor, 16680, West Java, Indonesia
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| Abstract: | An aerobic formate-assimilating bacterium, denoted as strain FAB, was newly isolated from activated sludge of wastewater treatment. Phylogenetic analysis based on 16S rDNA sequence assigned the isolate to the genus Cupriavidus. Scanning electron micrography revealed that this bacterium has a coccal morphology, and from some physiological assays, the bacterium was characterized to be Gram-negative, nitrate-reduction-positive and catalase-positive. In addition to formate, strain FAB was able to utilize fructose, acetate or pyruvate as a preferred carbon source. Compared with a close relative, Cupriavidus necator, our isolate exhibited a greater growth rate on formate under an aerobic condition. |
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