Abstract: The invention relates to a method for impregnating a support matrix with solid and/or liquid compounds using a compressed gas or a compressed mixture of gases at densities ranging from 0.15 to 1.3 kg/l and at least two unsymmetrical pressure changes (pulsations). The method is further characterized in that both a multitude of impregnating substances such as biologically active compounds, technical materials or metal-organic compounds, as well as support matrices of biological origin and organic or inorganic substances can be used that have large inner surfaces and/or inner surfaces that are difficult to access.

Abstract: A method for separating volatile flavorings from alcoholic liquids by extraction with a compressed C2-C4 hydrocarbon.

Abstract: The invention relates to a method for obtaining fruit wax from plant constituents, said method being carried out essentially using compressed C2-C4 hydrocarbons. Unlike previous extraction methods with supercritical CO2, the inventive method can be carried out at low pressures and with a reduced extraction means throughput. Residues from the fruit treatment, especially peel from the juicing process, are used as starting materials. Preferred extraction agents are ethane, propane, butane and the mixtures thereof, the extraction itself being carried out in batches at pressures of <50 mPa and temperatures of ?70° C., with an extraction agent throughput of between 4 and 20 kg/kg of starting materials. The extracted fruit wax is outstandingly suitable for cosmetic or pharmaceutical preparations, especially for the care and treatment of the skin.

Abstract: The invention relates to a method for obtaining natural oils from plant constituents, said method being essentially carried out using compressed C2-C4 hydrocarbons. Residues from the crop and fruit treatment, especially from the treatment of pips and berries, are used as starting materials. Unlike previous extraction methods using organic solvents, the inventive method can be economically carried out on the basis of low pressures and reduced extraction agent throughputs. Preferred extraction agents are ethane, propane, butane and the mixtures thereof, the extraction itself being carried out in batches at pressures of <50 mPa and temperatures of ?70° C., with an extraction agent throughput of between 4 and 20 kg/kg of starting materials. The extracted oils are outstandingly suitable for flavouring preparations and cosmetic formulations, especially for the care and treatment of the skin.

Abstract: The present invention relates to a method for the physical treatment of starch (derivatives) using densified gases, in which essentially the starting material is treated at process temperatures between 20 and 200° C. and at process pressures between 50 and 800° C. for at least one minute, the density of the densified gas (mixture) being >180 kg/m3. Suitable starting materials are, in particular, native plant starches, starch from genetically modified plants, or physically and/or chemically modified starches. The treatment with, in particular, densified carbon dioxide, can be carried out under defined pressure change sequences, for which, in particular, liquid aids, such as water or suitable organic solvents, can also be added.

Abstract: The invention relates to a method for the selective isolation of valuable substances with the aid of compressed C2 to C4 hydrocarbons, such as for example ethane, propane, and/or butane, according to which a starting material is used, which contains the valuable substances in an absorbed and/or adsorbed form. Activated carbon, alumina, silicic acids, zeoliths or polysaccharides, which are charged accordingly with the valuable materials, are used as the starting materials for said method, which is carried out preferably in a continuous operation at temperatures of </=120 DEG C. and pressures of <50 Mpa. The inventive method is particularly suitable for obtaining high-quality aromas and flavourings from starting materials that are derived from the production and/or preparation of foodstuffs and preferably from the preparation of flavourings, the production and processing of juices, wines and spirits, or the processing of meat, fruit and vegetables.

Abstract: The invention concerns a method for stably flavouring drinks by means of solid, solvent-inert, particulate carrier materials loaded with flavouring agents having a large specific surface in which inorganic silicon, aluminium and/or carbon-containing compounds from the group comprising silicates, aluminium oxides and activated carbons, which optionally contain portions of water, are used as carrier materials. Silica gels, kieselguhr, activated and/or calcined clays, ?-Al2O3 and alumina oxide xerogels are particularly suitable as carrier materials which should have a specific surface between 0.1 and 1000 m2/g and a particle size of ?10 ?m. Suitable pore sizes of the carrier materials are those between 0.3 and 5000 nm. Suitable flavouring agents are essential oils, citrus oils, fruit essences and flavour extracts, for the loading of which the carrier materials are introduced into liquids containing flavouring agents or are sprayed with these.

Abstract: The invention relates to a method for impregnating a support matrix with solid and/or liquid compounds using a compressed gas or a compressed mixture of gases at densities ranging from 0.15 to 1.3 kg/l and at least two unsymmetrical pressure changes (pulsations). The method is further characterized in that both a multitude of impregnating substances such as biologically active compounds, technical materials or metal-organic compounds, as well as support matrices of biological origin and organic or inorganic substances can be used that have large inner surfaces and/or inner surfaces that are difficult to access.

Abstract: Disclosed is a method for the selective separation of volatile flavorings from monophase, (semi)liquid starting materials having a fat content and/or oil content of =20 percent by weight, said method being preferably carried out at temperatures of =70 ° C. and at pressures of <50 MPa, especially by using compressed ethane, propane, butane, or any mixtures thereof. The starting materials can be pastes and purees having a fluid content of =10 percent by weight and water-containing and/or alcohol-containing liquids, especially juices and waters obtained during the production of juice, as well as alcoholic beverages and hard liquors. The inventive method makes it possible to obtain particularly separated natural, nature-identical, and/or artificial flavorings of high sensory qualities while undesired flavorings can be removed from the starting materials, i.e. said starting materials can be deodorized.

Abstract: The present invention relates to a method for the physical treatment of starch (derivatives) using densified gases, in which essentially the starting material is treated at process temperatures between 20 and 200° C. and at process pressures between 50 and 800° C. for at least one minute, the density of the densified gas (mixture) being >180 kg/M3. Suitable starting materials are, in particular, native plant starches, starch from genetically modified plants, or physically and/or chemically modified starches. The treatment with, in particular, densified carbon dioxide, can be carried out under defined pressure change sequences, for which, in particular, liquid aids, such as water or suitable organic solvents, can also be added.

Abstract: The invention relates to a method for impregnating a support matrix with solid and/or liquid compounds using a compressed gas or a compressed mixture of gases at densities ranging from 0.15 to 1.3 kg/l and at least two unsymmetrical pressure changes (pulsations). The method is further charcterized in that both a multitude of impregnating substances such as biologically active compounds, technical materials or metal-organic compounds, as well as support matrices of biological origin and organic or inorganic substances can be used that have large inner surfaces and/or inner surfaces that are difficult to access.

Abstract: For the preparation of pulverulent particle-reduced formulations with the aid of compressed gases, the solid compound to be formulated, a poorly soluble and usually bioactive active compound, is homogeneously ground together with 10-99% by weight (based on the formulation) of a carrier material which is essentially soluble in the compressed gas mixture, in the presence of compressed gas or mixtures thereof in a stirred autoclave having a mechanical grinding device at process temperatures between 10 and 200° C. and at process pressures between 5 and 500 bar, and in a second process stage the compressed gas mixture, usually dimethyl ether, pure propane and/or carbon dioxide, is expanded by lowering the pressure and separated off from the homogenate, which can also be present as a melt.

Abstract: This invention relates to homogeneous, anhydrous formulations which contain glycerophospholipids and polar or lipophilic substances (eg, physiologically active ingredients) in a molar ratio of 1:0.001 to 1:2, and maybe anhydrous formulation aids, eg, in the form of glycerol, in a molar ratio of 1:0.001 to 1:1, expressed in terms of the glycerophospholipids, the components forming such stable aggregates with one another as to render the formulations ideal for the preparation of dispersions, emulsions and/or suspensions in many fields of application, these including the food-processing sector, biotechnology, and the pharmaceuticals industry. The formulations are produced in an extraction column using compressed hydrocarbons, and are obtained from the column as a melt.

Abstract: The invention relates to oil-free glycerophospholipid formulations which contain a homogeneous mixture of glycerophospholipids and an anhydrous, liquid polyol compound such as glycerol in a molar ratio of 1:0.1 to 1. These formulations are produced, eg, by extracting a starting material consisting of an oil-containing glycerophospholipid (mixture) and the polyol component with a compressed hydrocarbon (mixture) in a rectifying column. The oil-free formulation can be obtained from the melt at the bottom of the column in the form of free-flowing powder, which is ideally suited for stabilising oil-in-water emulsions.

Abstract: A process for the extraction of carotenoid dyes from pre-dried natural starting materials is described using compressed gases such as propane and/or butane in which organic entraining agents can be additionally added in order to facilitate and complete the extraction process. With the aid of this process highly concentrated carotenoid dyes are obtained in high yield.

Abstract: Cholesterol and cholesterol esters are removed from egg yolk by a process whereina) optionally after the addition of an emulsion-breaking agent to the egg yolk, the egg yolk plasma is separated from the LDL-granula fraction,b) cholesterol and cholesterol esters which are contained in the egg yolk plasma are adsorbed on a solid adsorption agent andc) the solid material loaded with cholesterol and/or cholesterol esters is separated from the liquid plasma phase and optionally the egg yolk plasma and the separated granula fraction are again mixed together.