Process for the extraction of hop substances

US4640841A · kind A · utility

Assignee

• Hopfenextraktion HVG Barth, Raiser & Co. · DE

Inventors

• Adrian Forster · Wolnzach, DE
• Manfred Gehrig · Wolnzach, DE

Key dates

• Filing date: Dec 18, 1984
• Grant date: Feb 3, 1987
• Expiry date: Dec 18, 2004

Classification

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

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.