US4483876A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Enzymatic method for production of instant tea
Assignee: Novozymes AS
•
Filing: 1983-05-03
•
Granted: 1984-11-20
•
Expires: 2003-05-03
Abstract
Abstract Enzymatic method for production of instant tea, comprising treating tea leaves with an SPS-ase preparation, whereby the extract yield is improved, and instant tea made with the extract exhibits superior clarity.
Inventors
- 👤 Bent R. Petersen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:25
CPC Classifications
A; A23; A23F; A23F3/00; A23F3/06; A23F3/08; A23F3/10; A23F3/16; A23F3/166; A23F3/18
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
47 words
In a process for the enzymatic production of instant tea, the improvement which comprises treating the tea leaves with an SPS-ase preparation in concentration effective to improve the tea extract yield said SPS-ase being characterized as capable of degrading the water-soluble polysaccharide which binds to soy protein.
Claim 2
Dependent Claim
47 words
In a process for the enzymatic production of instant tea, the improvement which comprises treating the tea leaves with an SPS-ase preparation in concentration effective to improve the tea extract yield said SPS-ase being characterized as capable of degrading the water-soluble polysaccharide which binds to soy protein.
Claim 3
Dependent Claim
16 words
The method according to claim 1 wherein the SPS-ase preparation is from Aspergillus aculeatus CBS 101.43.
Claim 4
Dependent Claim
22 words
The method according to claim 1 wherein the concentration of the SPS-ase preparation comprises at least 10 -3 SPSU/g of tea leaves.
Claim 5
Dependent Claim
27 words
The method according to claim 3 wherein the concentration of the SPS-ase is an SPS-ase activity of between 0.5×10 -1 and 5×10 -1 SPSU/g of tea leaves.
Claim 6
Dependent Claim
22 words
The method according to claim 1 wherein treatment with the SPS-ase is carried out at a temperature between 40° and 70° C.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-11-20 | 1988-05-21 | 1988-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-20 | 1992-05-21 | 1992-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-20 | 1996-05-21 | 1996-11-20 | $7700.00 | Window Closed / Lapsed |