Reference : Production of γ-Decalactone by a Psychrophilic and a Mesophilic Strain of the Yeast
Scientific journals : Article
Life sciences : Biotechnology
Life sciences : Microbiology
http://hdl.handle.net/2268/16017
Production of γ-Decalactone by a Psychrophilic and a Mesophilic Strain of the Yeast
English
Alchihab, Mohamed [Université de Liège - ULg > > > Doct. sc. agro. & ingé. biol.]
Destain, Jacqueline [Université de Liège - ULg > Gembloux Agro-Bio Tech > Gembloux Agro-Bio Tech >]
Aguedo, Mario mailto [Université de Liège - ULg > Gembloux Agro-Bio Tech > Gembloux Agro-Bio Tech >]
Majad, Lamia [> >]
Ghalfi, Hakim [> >]
Wathelet, Jean-Paul mailto [Université de Liège - ULg > Gembloux Agro-Bio Tech > Gembloux Agro-Bio Tech >]
Thonart, Philippe mailto [Université de Liège - ULg > Gembloux Agro-Bio Tech > Gembloux Agro-Bio Tech - Biochimie et microbiologie industrielles >]
2009
Applied Biochemistry and Biotechnology
Humana Press
158
Yes (verified by ORBi)
International
0273-2289
Totowa
NJ
[en] Psychrophilic ; γ-Decalactone ; Castor oil ; Mesophilic ; Rhodotorula aurantiaca
[en] Among 18 psychrophilic strains isolated near the Antarctic Station, the psychrophilic
<br />strain Rhodotorula aurantiaca A19 was selected for its ability of growth and γ-
<br />decalactone production at low temperatures. The effects of temperature, initial pH, and castor
<br />oil concentration on the growth and γ-decalactone production by a psychrophilic and a
<br />mesophilic strain of R. aurantiaca were investigated. The highest γ-decalactone production
<br />in flasks (5.8 g/l) was obtained with the strain A19 at 14 °C and initial pH 7.0 in medium
<br />containing 20 g/l castor oil. On the other hand, these factors did not affect the production of
<br />γ-decalactone by the mesophilic strain. In fermentor, a γ-decalactone concentration of 6.6 g/l
<br />was reached with the strain A19, whereas a maximum of 0.1 g/l was obtained with the
<br />mesophilic strain. Our results suggest that the ability to synthesize γ-decalactone is a
<br />particularity of the strain A19, since the mesophilic strain (no. 30645) produced small amounts,
<br />and the other (no. 31354) did not exhibit this property. It is, to our knowledge, the first report of γ-decalactone production by R. aurantiaca and furthermore by a psychrophilic yeast strain.
<br />Moreover, the amount of γ-decalactone obtained in fermentor with the strain 19 was on the
<br />order of concentrations usually described in patents.
Researchers ; Students ; Others ; General public ; Professionals
http://hdl.handle.net/2268/16017
also: http://hdl.handle.net/2268/156543
10.1007/s12010-008-8297-x

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