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1. AU1983011046 - EXTRACTION DEVICE AND METHOD

Office
Australia
Application Number 11046/83
Application Date 18.01.1983
Publication Number 1983011046
Publication Date 29.08.1985
Publication Kind A
IPC
A23F 5/24
AHUMAN NECESSITIES
23FOODS OR FOODSTUFFS; THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
FCOFFEE; TEA; THEIR SUBSTITUTES; MANUFACTURE, PREPARATION, OR INFUSION THEREOF
5Coffee; Coffee substitutes; Preparations thereof
24Extraction of coffee; Coffee extracts; Making instant coffee
A23F 5/26
AHUMAN NECESSITIES
23FOODS OR FOODSTUFFS; THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
FCOFFEE; TEA; THEIR SUBSTITUTES; MANUFACTURE, PREPARATION, OR INFUSION THEREOF
5Coffee; Coffee substitutes; Preparations thereof
24Extraction of coffee; Coffee extracts; Making instant coffee
26Extraction of water soluble constituents
B01D 11/02
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
11Solvent extraction
02of solids
B01D 11/00
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
11Solvent extraction
CPC
B01D 11/02
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
11Solvent extraction
02of solids
A23F 5/26
AHUMAN NECESSITIES
23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
FCOFFEE; TEA; THEIR SUBSTITUTES; MANUFACTURE, PREPARATION, OR INFUSION THEREOF
5Coffee; Coffee substitutes; Preparations thereof
24Extraction of coffee; Coffee extracts
26Extraction of water-soluble constituents
Applicants Mittex A.G.
Inventors Hussmann, P.
Agents Pizzeys Patent and Trade Mark Attorneys Pty Ltd
Priority Data 3203100 30.01.1982 DE
Title
(EN) EXTRACTION DEVICE AND METHOD
Abstract
(EN) The extractive materials are extracted in counter-current, from a finally pulverized substance in an extractive phase with extraction solutions having different concentrations in a flat filtering bed extractor (2). In an additional cold extraction phase, the solution with the highest concentration obtained in the main extraction phase is further concentrated by passing it on the ground extraction substance (21). The extraction residue obtained in the additional extraction phase is finally pulverized (7) in presence of a high concentration extraction solution obtained in the main extraction phase. The main extraction phase is followed by a final extraction phase wherein the counter-current extraction is continued, after a previous heating (16) or after a prolonged resting period, by means of relatively low concentration solutions. This extraction method is essentially used to obtain highly flavoured extracts from natural aromatic substances such as coffee, and the cold extraction phase allows to obtain an improvement of the yield while preserving the aroma to its highest level.