Effect of cultivation conditions on the adhesive activity of Rhodococcus cells towards n-Hexadecane

The effect of cultivation conditions (the composition, acidity, and salinity of the cultivation medium; temperature; and the hydrodynamic conditions of cultivation) on the adhesion of actinobacteria of the genus Rhodococcus to n-hexadecane has been investigated. A study performed showed that the adh...

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Bibliographic Details
Published in:Applied biochemistry and microbiology 2012-09, Vol.48 (5), p.452-459
Main Authors: Rubtsova, E. V, Kuyukina, M. S, Ivshina, I. B
Format: Article
Language:English
Subjects:
Acidity
Actinobacteria
Adhesion
Adhesives
Bacteria
Biochemistry
Biomedical and Life Sciences
Bioremediation
Cell adhesion & migration
Cultivation
Growth conditions
hexadecane
Hydrocarbons
Life Sciences
lipid content
Low temperature
Medical Microbiology
Microbiology
Rhodococcus
Salinity
Sodium chloride
Soil contamination
temperature
Water pollution
Zeta potential
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Summary:The effect of cultivation conditions (the composition, acidity, and salinity of the cultivation medium; temperature; and the hydrodynamic conditions of cultivation) on the adhesion of actinobacteria of the genus Rhodococcus to n-hexadecane has been investigated. A study performed showed that the adhesive activity of rhodococci depends on the composition of the cultivation medium and on the cultivation temperature. The possible mechanisms underlying the effect of growth conditions on the adhesion of rhodococci to liquid hydrocarbons and involving changes in the cell lipid content or the zeta potential of cells are addressed. Rhodococcal strains displaying high adhesive activity (80–90%) at a low temperature (18°C), high salinity (5.0% NaCl), and acidity (pH 6.0) of the cultivation medium have been selected as a result of the present work; these strains have a considerable potential for use in bioremediation of soil and water contaminated by hydrocarbons.
ISSN:0003-6838
1608-3024
DOI:10.1134/S0003683812050110