CA2572995A1 - Method for decaffeinating tea - Google Patents
Method for decaffeinating tea Download PDFInfo
- Publication number
- CA2572995A1 CA2572995A1 CA002572995A CA2572995A CA2572995A1 CA 2572995 A1 CA2572995 A1 CA 2572995A1 CA 002572995 A CA002572995 A CA 002572995A CA 2572995 A CA2572995 A CA 2572995A CA 2572995 A1 CA2572995 A1 CA 2572995A1
- Authority
- CA
- Canada
- Prior art keywords
- process according
- carbon dioxide
- tea
- mpa
- extraction
- 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.)
- Granted
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
- 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
Abstract
The invention relates to a method for decaffinating tea (Camellia sinensis).
The method consists of using, as an extraction agent, a carbon dioxide which is compressed of a pressure greater than 50 and upto 100 Mpa.
The method consists of using, as an extraction agent, a carbon dioxide which is compressed of a pressure greater than 50 and upto 100 Mpa.
Claims (7)
1 Process for the decaffeination of tea of the plant Camellia sinensis by extraction with carbon dioxide and subsequent separation of the caffeine from the carbon dioxide charged therewith, characterized in that the extraction is carried out at a pressure of from 60 to 100 MPa and a temperature of from 10 to 80 °C.
2 Process according to claim 1, characterized in that the extraction is carried out at a pressure of from 70 to 95 MPa.
3. Process according to claim 1, characterized in that the tea is adjusted for the decaffeination to a humidity of 12 to 50%.
4. Process according to claim 1, characterized in that the caffeine is separated from the carbon dioxide by reducing the pressure to a value of 15 MPa or below.
5. Process according to claim 1, characterized in that the caffeine is separated from the carbon dioxide by adsorption.
6 Decaffeinated green tea of the plant Camellia sinensis, obtained by a process according to one or more of the claims 1 to 5.
7
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004033382.3 | 2004-07-09 | ||
DE102004033382 | 2004-07-09 | ||
PCT/EP2005/007407 WO2006005537A1 (en) | 2004-07-09 | 2005-07-08 | Method for decaffinating tea |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2572995A1 true CA2572995A1 (en) | 2006-01-19 |
CA2572995C CA2572995C (en) | 2010-12-07 |
Family
ID=34981442
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA2572995A Expired - Fee Related CA2572995C (en) | 2004-07-09 | 2005-07-08 | Method for decaffeinating tea |
Country Status (5)
Country | Link |
---|---|
US (1) | US7858138B2 (en) |
EP (1) | EP1778018B1 (en) |
CA (1) | CA2572995C (en) |
DE (1) | DE502005010720D1 (en) |
WO (1) | WO2006005537A1 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006055710A1 (en) * | 2006-11-23 | 2008-05-29 | Uhde High Pressure Technologies Gmbh | Process for the selective extraction and separation of organic substances by means of high pressure |
EA201070566A1 (en) * | 2007-11-05 | 2010-10-29 | Унилевер Н.В. | METHOD OF CLEANING TEA CONNECTIONS |
PT2207431E (en) * | 2007-11-05 | 2011-07-01 | Unilever Nv | Process for manufacturing tea products and products obtainable thereby |
AU2008324316B2 (en) * | 2007-11-05 | 2012-02-16 | Unilever Plc | Process for manufacturing tea products |
US20090202676A1 (en) * | 2008-02-07 | 2009-08-13 | Conopco, Inc. D/B/A Unilever | Process for manufacturing a tea product |
CN102170788A (en) * | 2008-10-02 | 2011-08-31 | 荷兰联合利华有限公司 | Process for manufacturing tea products |
PL2334193T3 (en) * | 2008-10-02 | 2012-12-31 | Unilever Nv | Process for manufacturing tea products |
CN108024655B (en) * | 2015-04-08 | 2020-10-09 | 班奥麦迪克公司 | Beverage brewing systems and methods |
Family Cites Families (39)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH535543A (en) * | 1970-02-05 | 1973-04-15 | Studiengesellschaft Kohle Mbh | Process for decaffeinating green coffee |
DE2106133C3 (en) * | 1971-02-10 | 1978-12-14 | Studiengesellschaft Kohle Mbh, 4330 Muelheim | Process for obtaining coffee oil containing aroma components from roasted coffee |
DE2119678C3 (en) * | 1971-04-22 | 1975-10-30 | Studiengesellschaft Kohle Mbh, 4330 Muelheim | Process for the production of decaffeinated coffee extract |
DE2127642C3 (en) | 1971-06-03 | 1975-10-16 | Studiengesellschaft Kohle Mbh, 4330 Muelheim | Process for making caffeine-free, full-flavored black tea |
US4167589A (en) * | 1971-06-03 | 1979-09-11 | Otto Vitzthum | Method for the manufacture of caffeine free black tea |
DE2212281C3 (en) * | 1972-03-14 | 1978-11-18 | Hag Ag | PROCESS FOR DECOFFEINATING RAW COFFEE |
DE2637197C2 (en) * | 1976-08-18 | 1983-01-27 | Hag Ag, 2800 Bremen | Process for the removal of caffeine from natural substances containing caffeine with a supercritical extractant |
DE2727191B2 (en) | 1977-06-16 | 1980-07-03 | Hag Ag, 2800 Bremen | Process for the selective extraction of caffeine from plant materials |
US4322445A (en) * | 1978-08-14 | 1982-03-30 | Siegfried Peter | Process for decaffeinating 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 |
US4341804A (en) * | 1979-03-26 | 1982-07-27 | General Foods Corporation | Decaffeination of aqueous roasted coffee extract |
US4255461A (en) * | 1979-11-13 | 1981-03-10 | General Foods Corporation | Preparation of a decaffeinated roasted coffee blend |
US4472442A (en) * | 1980-09-26 | 1984-09-18 | General Foods Corporation | Decaffeination process |
US4466923A (en) | 1982-04-01 | 1984-08-21 | The United States Of America As Represented By The Secretary Of Agriculture | Supercritical CO2 extraction of lipids from lipid-containing materials |
US4951557A (en) * | 1983-03-28 | 1990-08-28 | Chock Full O'nuts | Apparatus for decaffeination of aqueous extracts |
DE3339181A1 (en) * | 1983-10-28 | 1985-05-09 | Uhde Gmbh, 4600 Dortmund | METHOD AND DEVICE FOR DECAFFINATING TEA LEAVES |
US4728525A (en) * | 1983-12-13 | 1988-03-01 | Pablo Toro | Process for the decaffeination of green coffee |
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 |
DE3443390A1 (en) | 1984-11-28 | 1986-05-28 | Hopfenextraktion HVG Barth, Raiser & Co, 8069 Wolnzach | Process for separating off caffeine from liquefied or supercritical gases |
DE3515740A1 (en) * | 1985-05-02 | 1986-11-06 | Skw Trostberg Ag, 8223 Trostberg | METHOD FOR DECAFFINATING TEA |
US4767634A (en) * | 1986-06-03 | 1988-08-30 | General Foods Corporation | Coffee decaffeination with caffeic acid |
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 |
DE3719991A1 (en) * | 1987-06-15 | 1988-12-29 | Barth Raiser Hopfenextraktion | Process for the recovery of carbon dioxide used as solvent for caffeine |
US5135766A (en) * | 1987-11-14 | 1992-08-04 | Cr-Kaffeeveredelung M. Hermsen Gmbh & Co. | Process for the decaffeination of raw coffee |
JPH01289448A (en) | 1988-05-17 | 1989-11-21 | Ube Ind Ltd | Decaffeinating plant material |
US4911941A (en) * | 1988-08-05 | 1990-03-27 | General Foods Corporation | Method for decaffeinating coffee with a supercritical fluid |
US5266342A (en) * | 1988-08-05 | 1993-11-30 | Kraft General Foods, Inc. | Method for decaffeinating coffee materials including a reverse osmosis permeate recycle |
DE3838952A1 (en) * | 1988-11-17 | 1990-05-23 | Barth Raiser Hopfenextraktion | Process for aromatising (flavouring) treated tea |
US5338575A (en) * | 1990-01-10 | 1994-08-16 | Kohiensaure-werke Rud. Buse GmbH & Co. | Process for the quasi-continuous decaffeination of raw coffee |
DE4000474A1 (en) * | 1990-01-10 | 1990-11-15 | Ben Nasr Hedi Dr | METHOD FOR QUASICONTINUALLY DECOFFINATING RAW COFFEE |
US5288511A (en) * | 1990-08-23 | 1994-02-22 | Liquid Carbonic Corporation | Supercritical carbon dioxide decaffeination of acidified coffee |
DE4400096C2 (en) | 1994-01-04 | 1997-06-12 | Barth Raiser Hopfenextraktion | Process for decaffeinating black tea |
EP0666033B1 (en) * | 1994-02-03 | 1997-10-22 | Kraft Foods, Inc. | Process for decaffeinating aqueous caffeine-containing green coffee extracts |
DE19524481C2 (en) | 1995-07-05 | 2000-03-02 | Hopfenextraktion Hvg Barth, Raiser & Co | Procedure for decaffeinating black tea |
US5932101A (en) * | 1996-08-29 | 1999-08-03 | Eastman Chemical Company | Process for fluid/dense gas extraction under enhanced solubility conditions |
-
2005
- 2005-07-08 DE DE502005010720T patent/DE502005010720D1/en active Active
- 2005-07-08 CA CA2572995A patent/CA2572995C/en not_active Expired - Fee Related
- 2005-07-08 WO PCT/EP2005/007407 patent/WO2006005537A1/en active Application Filing
- 2005-07-08 EP EP05757354A patent/EP1778018B1/en not_active Expired - Fee Related
- 2005-07-08 US US11/631,887 patent/US7858138B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CA2572995C (en) | 2010-12-07 |
WO2006005537A1 (en) | 2006-01-19 |
DE502005010720D1 (en) | 2011-02-03 |
US7858138B2 (en) | 2010-12-28 |
US20070231445A1 (en) | 2007-10-04 |
EP1778018B1 (en) | 2010-12-22 |
EP1778018A1 (en) | 2007-05-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |
Effective date: 20160708 |