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Appl Environ Microbiol. 1989 November; 55(11): 3016-3019

Correlation of nitrogen metabolism with biosurfactant production by Pseudomonas aeruginosa.

Biotechnology Research Institute, National Research Council, Montreal, Quebec, Canada.

ABSTRACT

A direct relationship between increased glutamine synthetase activity and enhanced biosurfactant production was found in Pseudomonas aeruginosa grown in nitrate and Proteose Peptone media. A chloramphenicol-tolerant strain showed a twofold increase in biosurfactant production and glutamine synthetase activity. Increased ammonium and glutamine concentrations repressed both phenomena.

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