GB1286288A - Process for the preparation of freeze-dried products from liquids - Google Patents

Process for the preparation of freeze-dried products from liquids

Info

Publication number
GB1286288A
GB1286288A GB5201469A GB5201469A GB1286288A GB 1286288 A GB1286288 A GB 1286288A GB 5201469 A GB5201469 A GB 5201469A GB 5201469 A GB5201469 A GB 5201469A GB 1286288 A GB1286288 A GB 1286288A
Authority
GB
United Kingdom
Prior art keywords
liquid
coffee
dried product
freezing
mixture
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB5201469A
Inventor
Wilhelm Roselius
Klaus Sylla
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hag AG
Original Assignee
Hag AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hag AG filed Critical Hag AG
Priority to GB5201469A priority Critical patent/GB1286288A/en
Publication of GB1286288A publication Critical patent/GB1286288A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23F—COFFEE; TEA; THEIR SUBSTITUTES; MANUFACTURE, PREPARATION, OR INFUSION THEREOF
    • A23F5/00—Coffee; Coffee substitutes; Preparations thereof
    • A23F5/24—Extraction of coffee; Coffee extracts; Making instant coffee
    • A23F5/28—Drying or concentrating coffee extract
    • A23F5/32—Drying or concentrating coffee extract by lyophilisation
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L2/00—Non-alcoholic beverages; Dry compositions or concentrates therefor; Their preparation
    • A23L2/02—Non-alcoholic beverages; Dry compositions or concentrates therefor; Their preparation containing fruit or vegetable juices
    • A23L2/08—Concentrating or drying of juices
    • A23L2/12—Concentrating or drying of juices by freezing
    • A23L2/14—Concentrating or drying of juices by freezing and sublimation

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Health & Medical Sciences (AREA)
  • Nutrition Science (AREA)
  • Tea And Coffee (AREA)

Abstract

1286288 Coffee; tea; and substitutes HAG AG 23 Oct 1969 52014/69 Heading A2B [Also in Division F4] In freeze-drying aqueous extracts of coffee, coffee substitute, or black or herb tea, initially the liquid is rapidly wholly or partially frozen (up to 50%, e.g. 10%-30%) by direct contact with cooling surfaces or agents having temperatures below the eutectic freezing point of the liquid, the resulting ice-liquid mixture is allowed to thaw partially at a temperature (e.g. 0‹C) exceeding the eutectic freezing point so that the unfrozen liquid droplets increase in size to give a natural colour to the dried product, and the mixture then is slowly totally frozen (e.g. at -30‹C) in a stream of cold air and dehydrated and crushed. It is stated that the colour of the dried product is determined, the fineness of its structure and hence by the freezing speed. To decrease the apparent density of the dried product resulting from a concentrated liquid, the liquid is foamed before or during the initial freezing by means of air, or an inert gas, or a gas mixture. The initial freezing is in a carbon dioxide atmosphere.
GB5201469A 1969-10-23 1969-10-23 Process for the preparation of freeze-dried products from liquids Expired GB1286288A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5201469A GB1286288A (en) 1969-10-23 1969-10-23 Process for the preparation of freeze-dried products from liquids

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5201469A GB1286288A (en) 1969-10-23 1969-10-23 Process for the preparation of freeze-dried products from liquids

Publications (1)

Publication Number Publication Date
GB1286288A true GB1286288A (en) 1972-08-23

Family

ID=10462307

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5201469A Expired GB1286288A (en) 1969-10-23 1969-10-23 Process for the preparation of freeze-dried products from liquids

Country Status (1)

Country Link
GB (1) GB1286288A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0088532A1 (en) * 1982-03-01 1983-09-14 General Foods Corporation Dark-colored freeze dried coffee
GB2119625A (en) * 1982-03-30 1983-11-23 Gen Foods Corp Freeze-dried coffee with a roast and ground appearance
WO1994028736A1 (en) * 1993-06-04 1994-12-22 Unilever Plc Hot soluble extractable food product and process for preparing same
US5979165A (en) * 1995-11-20 1999-11-09 Good Humor-Breyers Ice Cream Process for supercooling
WO2013135826A1 (en) * 2012-03-14 2013-09-19 Project Pharmaceutics Gmbh Improved lyophilization method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0088532A1 (en) * 1982-03-01 1983-09-14 General Foods Corporation Dark-colored freeze dried coffee
GB2119625A (en) * 1982-03-30 1983-11-23 Gen Foods Corp Freeze-dried coffee with a roast and ground appearance
WO1994028736A1 (en) * 1993-06-04 1994-12-22 Unilever Plc Hot soluble extractable food product and process for preparing same
US5979165A (en) * 1995-11-20 1999-11-09 Good Humor-Breyers Ice Cream Process for supercooling
WO2013135826A1 (en) * 2012-03-14 2013-09-19 Project Pharmaceutics Gmbh Improved lyophilization method

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees