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Some Properites of Acinetobacter spp. Strains after Cultivation inDifferent Media


Authors: A. Hoštacká
Authors‘ workplace: Ústav preventívnej a klinickej medicíny, Bratislava
Published in: Epidemiol. Mikrobiol. Imunol. , 2003, č. 2, s. 72-75
Category:

Overview

Growth, surface properties, production of lipase, histamine and some signal molecules (N-acyl-homoserinelactones, AHLs) in four Acinetobacter baumannii strains, in one Acinetobacter lwoffii andin one Acinetobacter haemolyticus strain cultivated in three complex media were studied. Moreintensive growth of bacterial suspensions was observed inMueller-Hinton broth and in brain heartinfusion in comparison with growth in proteose peptone. Greater growth of bacterial strains (withthe exception of A. haemolyticus) in these two media was associated with more significant surfacehydrophobicity of bacteria manifested by their adherence to xylene. A higher level of lipase wasfound in all strains (with the exception of A. haemolyticus) after cultivation inMueller-Hinton broth.Composition of culture medium did not affect production of histamine. None of the studied strainsin any medium tested produced short-chained unsubstituted AHLs that can be ones of the signalmolecules shared with cell-to-cell communication.

Key words:
Acinetobacter spp. – growth medium – properties.

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Hygiene and epidemiology Medical virology Clinical microbiology
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