Reference : Effect of Temperature on Growth of Psychrophilic and Psychrotrophic Members of Rhodot...
Scientific journals : Article
Life sciences : Biotechnology
http://hdl.handle.net/2268/6388
Effect of Temperature on Growth of Psychrophilic and Psychrotrophic Members of Rhodotorula Aurantiaca
English
Sabri, Ahmed mailto [Université de Liège - ULg > > Centre Wallon de biologie industrielle >]
Jacques, Philippe [> > > >]
Weekers, Frederic [> > > >]
Bare, Ghislain [> > > >]
Hiligsmann, Serge [Université de Liège - ULg > Département des sciences de la vie > Biochimie et microbiologie industrielles >]
Moussaif, Mustapha [> > > >]
Thonart, Philippe mailto [Université de Liège - ULg > Département des sciences de la vie > Biochimie et microbiologie industrielles >]
2000
Applied Biochemistry and Biotechnology
84-86
Spring
391-9
Yes (verified by ORBi)
International
0273-2289
[en] Rhodotorula aurantiaca ; growth kinetics ; psychrophilic ; psychrotrophic ; cold adaptation
[en] The thermo-dependence of growth kinetic parameters was investigated for the Antarctic psychrophilic strain Rhodotorula aurantiaca and a psychrotrophic strain of the same species isolated in Belgium (Ardennes area). Cell production, maximum growth rate (mu max), and half-saturation constant for glucose uptake (Ks) of both yeasts were temperature dependent. For the two yeasts, a maximum cell production was observed at about 0 degree C, and cell production decreased when temperature increased. The mu max values for both strains increased with temperature up to a maximum of 10 degrees C for the psychrophilic strain and 17 degrees C for the psychrotrophic strain. For both yeasts, Ks for glucose was relatively constant at low temperatures. It increased at temperatures above 10 degrees C for the psychrophilic strain and 17 degrees C for the psychrotrophic strain. Although its glucose affinity was lower, the psychrotrophic strain grew more rapidly than the psychrophilic one. The difference in growth rate and substrate affinity was related to the origin of the strain and the adaptation strategy of R. aurantiaca to environmental conditions.
http://hdl.handle.net/2268/6388

File(s) associated to this reference

Fulltext file(s):

FileCommentaryVersionSizeAccess
Restricted access
Sabri ABB 2000,.pdfPublisher postprint1.24 MBRequest copy

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.