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GB1333362A - Method of producing caffeine-free black tea - Google Patents

Method of producing caffeine-free black tea

Info

Publication number
GB1333362A
GB1333362A GB2593972A GB2593972A GB1333362A GB 1333362 A GB1333362 A GB 1333362A GB 2593972 A GB2593972 A GB 2593972A GB 2593972 A GB2593972 A GB 2593972A GB 1333362 A GB1333362 A GB 1333362A
Authority
GB
United Kingdom
Prior art keywords
tea
black tea
free black
extracted
caffeine
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
GB2593972A
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
Publication of GB1333362A publication Critical patent/GB1333362A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D11/00—Solvent extraction
    • B01D11/02—Solvent extraction of solids
    • B01D11/0203—Solvent extraction of solids with a supercritical fluid
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23F—COFFEE; TEA; THEIR SUBSTITUTES; MANUFACTURE, PREPARATION, OR INFUSION THEREOF
    • A23F3/00—Tea; Tea substitutes; Preparations thereof
    • A23F3/36—Reducing or removing alkaloid content; Preparations produced thereby; Extracts or infusions thereof
    • A23F3/366—Reducing or removing alkaloid content; Preparations produced thereby; Extracts or infusions thereof by extraction of the leaves with selective solvents
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23F—COFFEE; TEA; THEIR SUBSTITUTES; MANUFACTURE, PREPARATION, OR INFUSION THEREOF
    • A23F3/00—Tea; Tea substitutes; Preparations thereof
    • A23F3/40—Tea flavour; Tea oil; Flavouring of tea or tea extract
    • A23F3/42—Isolation or recuperation of tea flavour or tea oil
    • A23F3/423—Isolation or recuperation of tea flavour or tea oil by solvent extraction; Tea flavour from tea oil

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Tea And Coffee (AREA)

Abstract

1333362 Decaffeinated black tea HAG AG 2 June 1972 [3 June 1971] 25939/72 Heading A2B Aroma substances are extracted from leaf tea in a first step by a dry supercritical gas, the caffeine is extracted therefrom by a wet supercritical gas in a second step, and either the tea from the second step is dried and the aroma substances restored thereto or the tea is extracted with water and the extract combined with the aroma substances.
GB2593972A 1971-06-03 1972-06-02 Method of producing caffeine-free black tea Expired GB1333362A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712127642 DE2127642C3 (en) 1971-06-03 1971-06-03 Process for making caffeine-free, full-flavored black tea

Publications (1)

Publication Number Publication Date
GB1333362A true GB1333362A (en) 1973-10-10

Family

ID=5809756

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2593972A Expired GB1333362A (en) 1971-06-03 1972-06-02 Method of producing caffeine-free black tea

Country Status (8)

Country Link
JP (1) JPS5910775B1 (en)
BE (1) BE784226A (en)
CH (1) CH570773A5 (en)
DE (1) DE2127642C3 (en)
FR (1) FR2140098B1 (en)
GB (1) GB1333362A (en)
IT (1) IT1048925B (en)
NL (1) NL179334C (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7410319A (en) * 1973-08-10 1975-02-12 Siegfried Peter Prof Dr PROCEDURE FOR SEPARATING MIXTURES OF SUBSTANCES BY AN EXTRAHIVE DISTILLATION.
FR2505616A1 (en) * 1981-05-14 1982-11-19 Rhone Poulenc Sa Flavour extn. from fermented fruit drinks - with supercritical gas esp. carbon di:oxide
FR2505868A1 (en) * 1981-05-14 1982-11-19 Rhone Poulenc Sa Reducing the alcohol content of fermented fruit drinks - by extn. with supercritical gas
EP0280934A2 (en) * 1987-02-28 1988-09-07 Messer Griesheim Gmbh Process for extracting organic substances from solids
WO2007039018A1 (en) * 2005-09-19 2007-04-12 Unilever Plc Improved process for tea manufacture
US7799364B2 (en) 2006-01-12 2010-09-21 Conopco Inc. Method for the manufacture of a green tea product
WO2019154554A1 (en) 2018-02-08 2019-08-15 Unilever Plc Decaffeinated beverage precursor
CN113068752A (en) * 2021-05-05 2021-07-06 深圳市花密鸟生物科技有限公司 Preparation method of tea powder and tea powder freeze-dried tablets and instant tea powder and tea powder freeze-dried tablets

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AR204886A1 (en) * 1974-11-27 1976-03-05 Nestle Sa PROCEDURE FOR THE DECAFFEINATION OF VEGETABLE MATTERS
DE2634535C3 (en) * 1976-07-31 1982-04-22 Kaffee-Veredelungs-Werk Koffeinfrei Kaffee Gmbh & Co, 2000 Hamburg Process for decaffeinating green coffee
DE2846976C3 (en) * 1978-10-28 1982-05-06 Fried. Krupp Gmbh, 4300 Essen Process for decaffeinating green coffee
US4251559A (en) * 1978-11-06 1981-02-17 Societe D'assistance Technique Pour Produits Nestle S.A. Decaffeination process
US4276315A (en) 1979-02-12 1981-06-30 General Foods Corporation Method for decaffeinating coffee
AU530961B2 (en) * 1980-10-16 1983-08-04 A.G. (Patents) Limited Production of decaffinated tea
EP0151202A1 (en) * 1984-02-08 1985-08-14 Hag Gf Aktiengesellschaft Process for preparing decaffeinated and soluble coffee or tea extract powder
DE3413869A1 (en) * 1984-04-12 1985-10-17 Hopfenextraktion HVG Barth, Raiser & Co, 8069 Wolnzach Process for the decaffeination of black tea
DE3414767A1 (en) * 1984-04-18 1985-11-07 Hopfenextraktion HVG Barth, Raiser & Co, 8069 Wolnzach Process for producing decaffeinated black or green tea
DE3415844C2 (en) * 1984-04-27 1994-02-03 Sueddeutsche Kalkstickstoff Process for the production of decaffeinated tea
DE3515740A1 (en) * 1985-05-02 1986-11-06 Skw Trostberg Ag, 8223 Trostberg METHOD FOR DECAFFINATING TEA
ATE49697T1 (en) * 1986-10-23 1990-02-15 Koffeinfrei Kaffee Gmbh PROCESS FOR DECAFEINERING NATURAL PRODUCTS, ESPECIALLY RAW COFFEE OR TEA.
ATE46086T1 (en) * 1986-10-23 1989-09-15 Koffeinfrei Kaffee Gmbh METHOD OF DECAFEINERING COFFEE.
DE3640333C3 (en) * 1986-11-26 1994-08-11 Barth Raiser Hopfenextraktion Process and apparatus for the preparation of flavored, decaffeinated tea
DE3640967A1 (en) * 1986-11-29 1988-06-09 Sueddeutsche Kalkstickstoff METHOD FOR DEAROMATIZING AND THEN REAROMATIZING TEA
JPS63183979U (en) * 1987-05-15 1988-11-28
DE3719991A1 (en) * 1987-06-15 1988-12-29 Barth Raiser Hopfenextraktion Process for the recovery of carbon dioxide used as solvent for caffeine
DE3838952A1 (en) * 1988-11-17 1990-05-23 Barth Raiser Hopfenextraktion Process for aromatising (flavouring) treated tea
DE4400096C2 (en) * 1994-01-04 1997-06-12 Barth Raiser Hopfenextraktion Process for decaffeinating black tea
DE19524481C2 (en) * 1995-07-05 2000-03-02 Hopfenextraktion Hvg Barth, Raiser & Co Procedure for decaffeinating black tea
DE10018606A1 (en) * 2000-04-14 2001-10-25 Sueddeutsche Kalkstickstoff Production of food or animal feed, especially cereal, cocoa or egg yolk product, involves extracting and separating lipids and mixing lipophilic constituents with extracted matrix using supercritical and compressed carbon dioxide
EP1778018B1 (en) 2004-07-09 2010-12-22 NATECO2 GmbH & Co. KG Method for decaffinating tea
EP2515665B1 (en) * 2009-12-22 2013-08-14 Unilever NV A process for preparing a tea product
CN109077149B (en) * 2018-04-23 2021-10-29 江西师范大学 A kind of pure instant tea and preparation method thereof
CN112471277A (en) * 2020-12-17 2021-03-12 江西阳际峰茶业有限公司 Preparation method of tea with low caffeine

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3477856A (en) * 1965-11-10 1969-11-11 Us Agriculture Process for extraction of flavors
CH535543A (en) * 1970-02-05 1973-04-15 Studiengesellschaft Kohle Mbh Process for decaffeinating green coffee

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7410319A (en) * 1973-08-10 1975-02-12 Siegfried Peter Prof Dr PROCEDURE FOR SEPARATING MIXTURES OF SUBSTANCES BY AN EXTRAHIVE DISTILLATION.
FR2505616A1 (en) * 1981-05-14 1982-11-19 Rhone Poulenc Sa Flavour extn. from fermented fruit drinks - with supercritical gas esp. carbon di:oxide
FR2505868A1 (en) * 1981-05-14 1982-11-19 Rhone Poulenc Sa Reducing the alcohol content of fermented fruit drinks - by extn. with supercritical gas
EP0280934A2 (en) * 1987-02-28 1988-09-07 Messer Griesheim Gmbh Process for extracting organic substances from solids
EP0280934A3 (en) * 1987-02-28 1989-03-29 Messer Griesheim Gmbh Process for extracting organic substances from solids
WO2007039018A1 (en) * 2005-09-19 2007-04-12 Unilever Plc Improved process for tea manufacture
AU2006299268B2 (en) * 2005-09-19 2010-07-22 Ekaterra Research and Development UK Limited Improved process for tea manufacture
US7799364B2 (en) 2006-01-12 2010-09-21 Conopco Inc. Method for the manufacture of a green tea product
WO2019154554A1 (en) 2018-02-08 2019-08-15 Unilever Plc Decaffeinated beverage precursor
CN113068752A (en) * 2021-05-05 2021-07-06 深圳市花密鸟生物科技有限公司 Preparation method of tea powder and tea powder freeze-dried tablets and instant tea powder and tea powder freeze-dried tablets

Also Published As

Publication number Publication date
FR2140098A1 (en) 1973-01-12
NL179334C (en) 1986-09-01
DE2127642C3 (en) 1975-10-16
CH570773A5 (en) 1975-12-31
DE2127642B2 (en) 1975-03-13
NL179334B (en) 1986-04-01
FR2140098B1 (en) 1977-12-23
NL7207534A (en) 1972-12-05
DE2127642A1 (en) 1973-01-04
BE784226A (en) 1972-11-30
JPS5910775B1 (en) 1984-03-12
IT1048925B (en) 1980-12-20

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Legal Events

Date Code Title Description
PS Patent sealed
PLE Entries relating assignments, transmissions, licences in the register of patents
PE20 Patent expired after termination of 20 years