Process for the preparation of granules for the controlled...

Details Process for the preparation of granules for the controlled... Process for the preparation of granules for the controlled...

A - Human Necessities

23

L

A23L 1/22 (2006.01)

Patent

CA 2346948

We describe a process for shaping into a granular form a delivery system for the controlled release of flavour or fragrance compounds, which process comprises the steps of preparing a mixture of a continuous phase carrier containing a volatile flavour or fragrance compound or composition finely divided therein and having a low water content guaranteeing that the glass transition temperature of said mixture is the glass transition temperature of the final product; heating said mixture within a screw extruder to a temperature comprised between 90 and 130 ~C to form a molten mass; extruding the molten mass through a die and chopping the molten mass as it exits the die i.e. at a temperature above the glass transition temperature of the carrier.

L'invention concerne un procédé relatif à l'élaboration de granulés dans un système de délivrance de composés de saveurs ou de parfums en libération contrôlée, qui comprend les étapes suivantes: préparation d'un mélange de vecteur en phase continue contenant en fine division un composé ou une composition à saveur ou parfum de type volatil, à faible teneur en eau pour garantir que la température de transition vitreuse du mélange corresponde à celle du produit final; échauffement du mélange au moyen d'une extrudeuse à vis jusqu'à une température comprise entre 90 et 130 ·C pour former une masse fondue; extrusion de la masse fondue par une filière et découpage de la masse fondue à la sortie de la filière, c'est-à-dire à une température supérieure à la température de transition vitreuse du vecteur susmentionné.

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