The influence of centrifugation on Zymomonas mobilis aggregation

María de los Angeles Perez Fernandez Palha ^[1] ; Carlos Edison Lopes ^[1] ; Maria Alice Gomes de Andrade Lima ^[1] ; Nei Pereira Junior ^[2]
1. [1] Universidade Federal de Pernambuco
  
  Universidade Federal de Pernambuco
  
  Brasil
2. [2] Universidade Federal do Rio de Janeiro
  
  Universidade Federal do Rio de Janeiro
  
  Brasil
Localización: Electronic Journal of Biotechnology, ISSN-e 0717-3458, Vol. 5, Nº. 3, 2002, págs. 21-22
Idioma: inglés
Enlaces
- Texto completo
Resumen
- Flocculent Zymomonas mobilis breaks down in smaller flocs and individual cells when centrifuged. The main consequence of it is an increase in the dispersion of the sample, suggesting that the influence of the centrifugal force on the aggregation of cells is worth to study. The experiments showed that the degree of dispersion varied between 30% and 100% when the centrifugal acceleration changed from 25 g to 2500 g. Observation under the electronic microscope showed that a slimy material covered the cells recovered by gentle gravitational settling and, that the centrifuged cells presented a bare cell wall.