Abstract: A coating method is provided with the steps of dipping of containers filled with the parts to be coated, having a pierced container wall, into a section of a reservoir filled with a coating liquid, lifting the containers filled with the parts to be coated out from the coating liquid and dispersing and/or spinning off the excess coating liquid remaining on the parts being coated after they are lifted out. During dispersing and/or spinning, the container filled with the parts being coated is rotated about an axis of rotation situated inside the container filled with the parts being coated and at least for a time about an axis of rotation situated outside the container and running parallel to the axis of rotation situated inside the container.

Abstract: In a method of producing a xanthohumol-concentrated hop extract, the xanthohumol-containing hop extract is extracted from a xanthohumol-containing hop raw material by highly compressed CO2 as a solvent at pressures above 500 bar and temperatures above 60° C.

Abstract: 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.

Abstract: By the extraction with CO.sub.2 at 60 to 150 bar and 20.degree. to 70.degree. C., an aroma enriched fraction is taken from the moistened black tea, said fraction being added again to already decaffeinated and dried tea. Decaffeination starts after the aroma fraction has been obtained by pumping carbon dioxide at a pressure of between 150 to 500 bar and a temperature of between 10.degree. to 100.degree. C. through a bulk moistened tea. The solvent charged with caffeine is passed over an adsorber or purified by reduction of density.

Abstract: 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.

Abstract: There is provided a novel procedure for the extraction of a high proportion of the potential bitterness resins from hops by extracting the hops with super critical carbon dioxide at pressures of about 100 to 300 bar temperatures above 100.degree. C.