Biosurfactant Production by Rhodococcus erythropolis Grown on Glycerol As Sole Carbon Source
The production of biosurfactant by Rhodococcus erythropolis during the growth on glycerol was investigated. The process was carried out at 28°C in a 1.5-L bioreactor using glycerol as carbon source. The bioprocess was monitored through measurements of biosurfactant concentration and glycerol consumption. After 51 h of cultivation, 1.7 g/L of biosurfactant, surface, and interfacial tensions values (with n-hexadecane) of 43 and 15 mN/m, respectively, 67% of Emulsifying Index (E 24), and 94% of oil removal were obtained. The use of glycerol rather than what happens with hydrophobic carbon source allowed the release of the biosurfactant, originally associated to the cell wall.
Index EntriesBiosurfactant Rhodococcus oil removal
Unable to display preview. Download preview PDF.
- 6.Neu, T. R. and Poralla, K. (1990), Appl. Microbiol. Biotechnol. 32, 521–525.Google Scholar
- 9.Cooper, D. G. and Goldenberg, B. G. (1987), Appl. Environ. Microbiol. 53, 224–229.Google Scholar
- 12.Bicca, F. C., Fleck, L. C., and Ayub, M. Az. (1999), Revista de Microbiol. 30, 231–236.Google Scholar
- 14.Wagner, F. B., Behrendt, U., Bock, H., Kretschmer, A., Lang, S., and Syldatk, C. (1983), In: Microbial Enhanced Oil Recovery, Zajic, J. E., Cooper, D. G., Jack, T. R., and Kosaric, N. eds., Pennwell, Tulsa, Okla, pp. 55–60.Google Scholar