Process for the extraction of nonpolar constituents of hops

US4842878A · kind A · utility

Assignee

• Hopfenextraktion HVG Barth, Raiser & Co. · DE

Inventors

• Adrian Forster · Wolnzach, DE
• Stefan Geyer · Dresden, DE
• Josef Schulmeyr · Wolnzach, DE
• Roland Schmidt · Lakewood, US
• Manfred Gehrig · Wolnzach, DE

Key dates

• Filing date: Sep 24, 1987
• Grant date: Jun 27, 1989
• Expiry date: Sep 24, 2007

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C12C3/10
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

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.