US4680193A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solubilization of tea in cold water with catechin
Assignee: Nestec SA
•
Filing: 1986-04-04
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Granted: 1987-07-14
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Expires: 2006-04-04
Abstract
Abstract A process for the production of a cold-water soluble instant tea which comprises extracting black tea leaves with hot water, concentrating and cooling the hot-water extract of black tea leaves to precipitate substantially all the tea cream characterized in that the concentrated, cooled extract of black tea leaves is treated with an appropriate quantity of a catechin or mixture of catechins capable of rendering the tea cream soluble in cold water at from 10° C. to 30° C.
Inventors
- 👤 Tito-Livio Lunder
- 👤 Birgit Hoffmann
- 👤 Corine-Madeleine Nielsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:45
CPC Classifications
A; A23; A23F; A23F3/00; A23F3/16; A23F3/30
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
45 words
A process which comprises treating an extract of black tea containing tea cream with at least one catechin compound in an amount effective to render the tea cream in the extract soluble in cold water at a temperature of from 10° C. to 30° C.
Claim 2
Dependent Claim
45 words
A process which comprises treating an extract of black tea containing tea cream with at least one catechin compound in an amount effective to render the tea cream in the extract soluble in cold water at a temperature of from 10° C. to 30° C.
Claim 3
Dependent Claim
34 words
A process according to claim 1 wherein the extract has a solids content of from 6% to 11% and is cooled to a temperature of from 7.5° C. to 12.5° C. before being treated.
Claim 4
Dependent Claim
30 words
A process according to claim 1 wherein the at least one catechin compound is selected from the group consisting of catechin, epicatechin, gollocatechin, epigallocatechin, epicatechingallate and epigallocatechingallate and combinations thereof.
Claim 5
Dependent Claim
37 words
A process according to claim 1 wherein the extract is treated with 1.25 to 2 parts by weight of solids of at least one catechin compound per part by weight of tea cream present in the extract.
Claim 6
Dependent Claim
35 words
A process according to claim 4 wherein the extract is treated with 1.5 to 1.7 parts by weight of at least one catechin compound per part by weight of tea cream present in the extract.
Claim 7
Dependent Claim
27 words
A process according to claim 1 wherein the at least one catechin compound is in an aqueous solution having a solids content of from 10% to 30%.
Claim 8
Dependent Claim
24 words
A process according to claim 1 wherein the at least one catechin compound is obtained by extracting green tea leaves to obtain an extract.
Claim 9
Dependent Claim
30 words
A process according to claim 7 wherein the at least one catechin is obtained by treating the green tea extract with a salt of a strong acidic cationic exchange resin.
Claim 10
Dependent Claim
23 words
A process according to claim 8 wherein the salt is selected from the group consisting of a potassium salt and a sodium salt.
Claim 11
Dependent Claim
41 words
A process according to claim 8 wherein the amount of resin used to treat the green tea extract is from 30% to 70% by weight based on the weight of dry green tea leaves used to obtain the green tea extract.
Claim 12
Dependent Claim
35 words
A process according to claim 10 wherein the amount of resin is from 40% to 60% by weight based upon the weight of the dry green tea leaves used to obtain the green tea extract.
Claim 13
Dependent Claim
18 words
A process according to claim 8 wherein the green tea extract is a cold-water extract of green tea.
Claim 14
Dependent Claim
20 words
A process according to claim 7 wherein the at least one catechin is obtained by extracting the green tea extract.
Claim 15
Dependent Claim
18 words
A process according to claim 1 wherein the at least one catechin compound is obtained from Catechu grambir.
References Cited (Backward Citations)
US2863775A
Cited
US3445236A
Cited
FR2268518A1
Cited
SU854353A1
Cited
SU856424A1
Cited
US4357361A
Cited
SU1102554A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-07-13 | 1991-01-12 | 1991-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-07-13 | 1995-01-12 | 1995-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-07-13 | 1999-01-12 | 1999-07-14 | $7700.00 | Window Closed / Lapsed |