Article (Scientific journals)
Effect of Temperature on Growth of Psychrophilic and Psychrotrophic Members of Rhodotorula Aurantiaca
Sabri, Ahmed; Jacques, Philippe; Weekers, Frederic et al.
2000In Applied Biochemistry and Biotechnology, 84-86 (Spring), p. 391-9
Peer Reviewed verified by ORBi
 

Files


Full Text
Sabri ABB 2000,.pdf
Publisher postprint (1.27 MB)
Request a copy

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
Rhodotorula aurantiaca; growth kinetics; psychrophilic; psychrotrophic; cold adaptation
Abstract :
[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.
Disciplines :
Biotechnology
Author, co-author :
Sabri, Ahmed ;  Université de Liège - ULiège > Centre Wallon de biologie industrielle
Jacques, Philippe ;  Université de Liège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Bio-industries
Weekers, Frederic
Bare, Ghislain
Hiligsmann, Serge ;  Université de Liège - ULiège > Département des sciences de la vie > Biochimie et microbiologie industrielles
Moussaif, Mustapha
Thonart, Philippe ;  Université de Liège - ULiège > Département des sciences de la vie > Biochimie et microbiologie industrielles
Language :
English
Title :
Effect of Temperature on Growth of Psychrophilic and Psychrotrophic Members of Rhodotorula Aurantiaca
Publication date :
2000
Journal title :
Applied Biochemistry and Biotechnology
ISSN :
0273-2289
eISSN :
1559-0291
Publisher :
Humana Press, United States - New Jersey
Volume :
84-86
Issue :
Spring
Pages :
391-9
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 18 January 2010

Statistics


Number of views
314 (27 by ULiège)
Number of downloads
14 (13 by ULiège)

Scopus citations®
 
12
Scopus citations®
without self-citations
9
OpenCitations
 
11

Bibliography


Similar publications



Contact ORBi