Procedure related to the preparation of granules for the controlled release of volatile compounds (original) (raw)

2000

Abstract

A method for shaping in a granular form a delivery system allowing the controlled release of a compound or composition of the flavor or fragrance, consisting of: a) preparing a mixture of a continuous phase carrier containing a compound or composition of flavor or volatile fragrance finely divided therein and having a low water content, so that said mixture has a transition temperature above ambient temperature Tg glass; b) heating said mixture in a screw extruder to a temperature between 90 and 130 ° C to form a melt; c) extruding the melt through a die, d) dicing the melt on leaving the nozzle to obtain a product having a glass transition temperature Tg of which is essentially the same as that of the mixture.

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