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| Content Provider | Springer Nature Link |
|---|---|
| Author | Kefalogianni, I. Aggelis, G. |
| Copyright Year | 2001 |
| Abstract | An unstructured mathematical model was developed and used in the evaluation of biochemical activities of four Azospirillum spp. strains grown in batch cultures in a high C/N-ratio medium. The strains were evaluated for their ability to grow on fructose and produce exo-polysaccharide, and to sustain nitrogenase activity by using fructose or polysaccharides. Quantitative expression of the regulation of polysaccharide synthesis and nitrogenase (acetylene reduction) activity from the mineral nitrogen and sugar concentration in the culture medium was achieved. It was found that, during growth, Azospirillum spp. produced significant quantities of exo-cellular and capsular polysaccharide, whereas after depletion of the carbon source from the culture medium polysaccharides were consumed, especially in A. lipoferum strains. Significant nitrogenase activity was detected during polysaccharide degradation. Oxygen uptake was high during assimilation of fructose and low during polysaccharide degradation. |
| Starting Page | 352 |
| Ending Page | 357 |
| Page Count | 6 |
| File Format | |
| ISSN | 01757598 |
| Journal | Applied Microbiology and Biotechnology |
| Volume Number | 58 |
| Issue Number | 3 |
| e-ISSN | 14320614 |
| Language | English |
| Publisher | Springer-Verlag |
| Publisher Date | 2001-12-08 |
| Publisher Place | Berlin, Heidelberg |
| Access Restriction | Subscribed |
| Content Type | Text |
| Resource Type | Article |
| Subject | Medicine Applied Microbiology and Biotechnology Biotechnology |
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