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Université de Neuchâtel

Analytical development and traceability in food chemistry : examples of application to Swiss and foreign Emmental cheese = Développement analytique et traçabilité en chimie alimentaire : exemple d'application à des Emmental suisses et étrangers

Pillonel, Laurent ; Tabacchi, Raphaël (Dir.)

Thèse de doctorat : Université de Neuchâtel : 2004 ; 1766.

The current Ph.D. work is divided into four main parts. In the first one, the problematic of volatile compound preconcentration is dealt with to extend the application range of electronic noses (ENs). A review article highlights the advantages of portable equipments such as Solid Phase Micro-Extraction (SPME) and Solid Phase Dynamic Extraction (SPDE). Both showed comparable efficiencies when...

Université de Neuchâtel

Analyse de tannins inhibiteurs de la stilbène oxydase produite par Botrytis cinerea Pers.: Fr

Perret, Camille ; Tabacchi, Raphaël (Dir.)

Thèse de doctorat : Université de Neuchâtel : 2001 ; 1591.

Grey mould is one of the most important diseases of grapes. Flowering clusters are infected by the fungus Botrytis cinerea, but it does not develop until ripening. This latency is probably maintained by an unfavourable environment, corresponding to the production of phytoalexins (resveratrol (1), pterostilbene (2) and e-viniferin (3)). Some varieties, as Gamaret, are very resistant to the fungus...

Université de Neuchâtel

Synthèse de polyéthers linéaires cycliques substitués par des cyclodextrines : application en chromatographie gazeuse et électrophorèse capillaire

Tharin, Manuel ; Tabacchi, Raphaël (Dir.)

Thèse de doctorat : Université de Neuchâtel : 2002 ; 1645.

The univocal determination of enantiomeric compositions and absolute configurations proves to be a task of paramount importance. Indeed, in very many cases, the specific interactions between the receptors of living systems and the substrates considered are closely related to their chirality. Currently, nearly all developed chiral chromatographic selectors consist of a single cyclodextrin entity...