Abstract
A helically shaped magnetic bacterium was isolated from freshwater sediment and a pure culture was obtained. The growth medium contained succinate, nitrate and ferric malate as the carbon, nitrogen and iron sources, respectively. The magnetic bacterium, designated AMB-1, was able to grow in free gaseous exchange with an air atmosphere. When cells were grown aerobically on agar, oxidase activity was present, and white non-magnetic colonies, which did not show catalase activity, were formed. The stationary phase of growth was reached 4-5 days later at a cell concentration of 1.4×109 cells/ml in liquid culture when an initial cell concentration of 105 cells/ml was employed. After ultrasonic disruption of harvested cells, 2.6 mg bacterial magnetite was obtained from a 11 culture.
Original language | English |
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Pages (from-to) | 651-655 |
Number of pages | 5 |
Journal | Applied Microbiology and Biotechnology |
Volume | 35 |
Issue number | 5 |
DOIs | |
Publication status | Published - 1991 Aug |
Externally published | Yes |
ASJC Scopus subject areas
- Microbiology (medical)
- Microbiology
- Bioengineering
- Biotechnology