Nateco2 Gmbh + Co. Kg

Hopfen-extraktion Hvg Bart, Raiser & Co.

Hopfenextraktion Hvg Barth, Raiser & Co.

Josef Schulmeyr

Andreas Wuzik

Manfred Gehrig

Stefan Geyer

Adrian Forster

Roland Schmidt

Birgit Forchhammer

Karin Simon

Martin Ketterer

A pressure vessel arrangement comprises an external pressure vessel and at least one insert basket in the pressure vessel for receiving a substance to be treated which is exposable to a pressure fluid which is feedable to the pressure vessel and the insert basket. There is provided a control device for the internal pressure prevailing in the insert basket, in particular in the form of a switchable pressure compensation line connecting the interior of the insert basket directly to the surroundings, i.e. not via the pressure vessel.

Pressure vessel arrangement comprising an external pressure vessel and at least one insert basket

The invention relates to a method for decaffeinating tea (). The method involves of using, as an extraction agent, a carbon dioxide which is compressed of a pressure greater than 50 and up to 100 MPa.

Method for decaffeinating tea

Moistened black tea is decaffeinated using carbon dioxide as a solvent. The mixture consisting of caffeine, water, aroma constituents and gaseous carbon dioxide obtained in the course of the purification of the carbon dioxide (prior to recirculation of the latter) is removed from the separation tank and separated by raising the temperature at atmospheric pressure into an aqueous caffeine solution and a gaseous aroma fraction. The emanating carbon dioxide transports the aroma components, after a dew point depression by lowering the temperature, to decaffeinated, dried tea, to which the aroma constituents are impregnated.

Process for aromatization of treated tea

This invention relates to a process for extracting nonpolar constituents from natural substances such as hops with simultaneous separation of residues of nonpolar plant protectives (fungicides/insecticides). In a first step, the plant protective as well as other ingredients that are soluble under the chosen conditions is extracted with compressed gases, and in a subsequent stage, the dissolved mixture is passed through an adsorbent and the plant protective is selectively removed from the mixture.

Process for the extraction of nonpolar constituents from plant material

The invention relates to a process for extracting nonpolar constituents from hops with simultaneous separation of residues of nonpolar plant protectives. In a first step the plant protective as well as other ingredients that are soluble under the chosen conditions are extracted with compressed gases, and in a subsequent stage the dissolved mixture is passed through an adsorbent and the plant protective is selectively removed from the mixture.

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Wolnzach, Germany

Josef Schulmeyr