Patent US4474822A successfully refreshed from Google Patents.
US4474822A
Expired / Lapsed
US
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Process for the preparation of instant tea
Assignee: Sato Foods Industries Co Ltd
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Filing: 1982-08-10
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Granted: 1984-10-02
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Expires: 2002-08-10
Abstract
Abstract Tea leaves are extracted with a cyclic dextrin-containing liquid and this extract is dried to obtain an instant beverage. According to this process, valuable components of tea leaves or the like are effectively extracted by the cyclic dextrin-containing liquid, and extracted soluble and aromatic components are effectively protected by the cyclic dextrin when the extract is dried to form an instant beverage. The obtained instant beverage such as instant tea has excellent fragrance and flavor.
Inventors
- 👤 Jinichi Sato
- 👤 Toshiro Kurusu
- 👤 Naoyoshi Kondo
- 👤 Makoto Tamaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:27
CPC Classifications
A; A23; A23G; A23G1/00; A23G1/30; A23G1/56; A23F; A23F3/00; A23F3/16; A23F3/18; A23F3/34; A23F5/00; A23F5/24; A23F5/26; A23F5/267; A23F5/36; A23F5/40; A23F5/44; A23G1/04; A23G1/042
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
76 words
A process for the preparation of instant beverages, which comprises extracting one part by weight of tea leaves with 4 to 15 parts by weight of an aqueous solution containing cyclic dextrin having a cyclic dextrin content of 1.5 to 6.0%, whereby the fragrance peculiar to tea is extracted and held by the cyclic dextrin in such a way that when hot water is added to the extract the fragrance is released, and spray-drying the extract.
Claim 2
Dependent Claim
76 words
A process for the preparation of instant beverages, which comprises extracting one part by weight of tea leaves with 4 to 15 parts by weight of an aqueous solution containing cyclic dextrin having a cyclic dextrin content of 1.5 to 6.0%, whereby the fragrance peculiar to tea is extracted and held by the cyclic dextrin in such a way that when hot water is added to the extract the fragrance is released, and spray-drying the extract.
Claim 3
Dependent Claim
23 words
A process according to claim 1, wherein the tea is selected from the group consisting of green tea, oolong tea and black tea.
Claim 4
Dependent Claim
40 words
A process according to claim 1, wherein the aqueous solution containing cyclic dextrin is a member selected from the group consisting of (a) an aqueous solution containing cyclic dextrin, and (b) an aqueous solution containing cyclic dextrin and acyclic dextrin.
References Cited (Backward Citations)
US2827452A
Cited
US3022173A
Cited
US3140184A
Cited
US3061444A
Cited
US3425910A
Cited
US3459731A
Cited
US3528819A
Cited
US3453259A
Cited
US3459732A
Cited
US4001438A
Cited
US4317881A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-10-02 | 1988-04-02 | 1988-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-02 | 1992-04-02 | 1992-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-02 | 1996-04-02 | 1996-10-02 | $7700.00 | Window Closed / Lapsed |