Skw Trostberg Aktiengesellschaft

Skw Trotestberg Ak

Jurgen Heidlas

Jan Cully

Heinz-Rudiger Vollbrecht

Franz Michlbauer

Georg Huber

Martin Ober

Ralf Kahleyss

Utz Kohlrausch

Johann Wiesmuller

Andrea Simon

Disclosed is a process for the fractionation of wool wax acid mixtures by dissolving the starting material in a polar organic solvent (mixture). The dissolved wool wax acid mixture is treated at a temperature between -5 and 30.degree. C. and at a pressure between 10 and 70 bar with gaseous carbon dioxide and the hydroxy-fatty acids that accumulate as a solid are separated from the solution.

Process for the fractionation of wool wax acid mixtures

Process for the extraction of natural carotenoid dyes

Process for obtaining lipid fractions from egg products in powder form

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

For the extraction of carotenes, in particular of .beta.-carotene, from natural sources, these are stirred for several hours at at least 30.degree. C. in a solvent mixture composed of acetic esters of C.sub.1 -C.sub.4 alcohols as well as a portion of 1 to 25% by weight of an oil of biological origin. The natural colorant is in this way obtained in very high space-time yields and high purity.

Process for the extraction of carotenes from natural sources

A process is described for the purification of carbohydrate derivatives with surface-active properties in which an extraction process is used to liberate the solid or liquid starting material from undesired lipophilic by-products by the use of compressed propane or a proportionate mixture thereof with butane at pressures between 8 and 150 bar and a process temperature below 120.degree. C. In this way it is possible to isolate valuable raw materials in a gentle manner either batch-wise or continuously which meet the high purity requirements, for example in the field of cosmetics.

Process for the purification of carbohydrate derivatives with

In order to fractionate or/and refine natural lipid materials by extraction with compressed gases, the natural materials are used in a liquid form and they are extracted with a liquid mixture of 50 to 90% by weight propane and 10 to 50% by weight carbon dioxide which is in a subcritical state.

Process for fractionating and refining natural lipid substances

A process is described for the production of egg-based products in powder form with a reduced fat and cholesterol content in which the starting material in powder form is extracted with liquid propane at a pressure of .ltoreq.200 bar and at a temperature of .ltoreq.70.degree. C. In this way low-cholesterol and low-fat egg powder products with good sensory properties are produced without the phospholipids and in particular lecithin being removed to a substantial extent in this process.

Process for the production of egg-based products in a powder form with a

The present invention provides a process for the production of fat- and cholesterol-reduced powdered products based on eggs with a high content of phospholipids by extraction with compressed gases, wherein the powdered starting material is extracted with a solvent mixture consisting of propane and carbon dioxide with a mixing ratio of 95/5 to 5/95% by weight at a pressure of &lt;300 bar and at s temperature of &lt;70.degree. C.,

Process for the production of fat- and cholesterol-reduced powered

A process for the isolation of lipid fractions from egg products in powder form with a content of phospholipids is described in which the egg product is extracted

Process for the isolation of lipid fractions from EGG products in powder

A process for the extraction of fats and oils from natural substances using liquid propane as the solvent is described in which the extraction is carried out at a pressure of 10 to 30 bar and a temperature of 10.degree. to 55.degree. C. and the separation of the extracted fats and oils from the solvent is carried out by means of pressure reduction or/and temperature increase to .ltoreq.80.degree. C. High quality products are isolated in this way in a good yield and under mild conditions.

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Trostberg, Germany

Jurgen Heidlas