Skw Trostberg Aktiengesellschaft

Andrea Simon

Heinz-Rudiger Vollbrecht

Jan Cully

Jurgen Heidlas

Ralf Kahleyss

A process to extract natural aromas from natural substances containing fat and oil with compressed gases, wherein the natural substances are extracted in two steps in which in the first step liquid propane and/or butane at a temperature of .ltoreq.70.degree. C. and at a pressure of &lt;500 bar and in the subsequent second step compressed carbon dioxide at a temperature of .ltoreq.50.degree. C. and at pressures between 70 and 500 bar are used as extraction agents.

Process for the extraction of natural aromas from natural substances

The present invention provides a process for the production of highly concentrated fruit aromas from condensed fruit vapours, wherein a) the fruit aromas in the fruit vapours are concentrated to a content of 0.05 to 1% by weight according to known methods, b) the concentrate from step a) is subjected to an extraction with compressed carbon dioxide at 60 to 180 bar and 10.degree. to 50.degree. C., and c) after decompression of the carbon dioxide and optionally after the addition of water, the aromarich oily phase is separated from the aroma-poor aqueous phase.

Growing community of inventors

Seebruck, Germany

Andrea Simon