Flavour sulphides are produced from methionine by two different pathways by Geotrichum candidum. - Normandie Université Accéder directement au contenu
Article Dans Une Revue Journal of Dairy Research Année : 2000

Flavour sulphides are produced from methionine by two different pathways by Geotrichum candidum.

Résumé

We have investigated the capacities of Geotrichum candidum strains to produce sulphides from methionine. This attribute is very important in cheese technology because of the flavouring potential of sulphur compounds. A spectrophotometric procedure using 5,5'-dithiobis(2-nitrobenzoic acid) to determine sulphides was tested on a collection of G. candidum strains, and confirmed by gas chromatography-mass spectrometry. The strains were distinguished on the basis of their ability to produce methanethiol. Gas chromatography-mass spectrometry also made it possible to identify other sulphides, such as dimethyl disulphide, dimethyl trisulphide and dimethyl sulphide. Using sonicated cells, the specific production of these four sulphides was studied in presence of L-[S-methyl-2H]methionine. Both methanethiol and dimethyl sulphide were produced from methionine, but two different pathways were used by G. candidum.
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Dates et versions

hal-02087619 , version 1 (02-04-2019)

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Yann Demarigny, Céline Berger, Nathalie N. Desmasures, Micheline Gueguen, H Spinnler. Flavour sulphides are produced from methionine by two different pathways by Geotrichum candidum.. Journal of Dairy Research, 2000, 67 (3), pp.371-380. ⟨10.1017/s0022029900004209⟩. ⟨hal-02087619⟩
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