Patent EP0201000A2 successfully refreshed from Google Patents.
EP0201000A2
Expired / Lapsed
EP
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Stabilisation of tea in cold water
Assignee: Societe des Produits Nestle SA
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Filing: 1986-04-24
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Granted: —
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Expires: 2006-04-24
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 characterised in that the concentrated, cooled extract of black tea leaves is treated with an appropriate quantity of an catechin or mixture of catechins capable of rendering the tea cream soluble in cold water at from 10 °C to 30 °C.
Inventors
- 👤 Brigit Hoffmann
- 👤 Tito Livio Lunder
- 👤 Corine Madeleine Nielsen
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 21:14
CPC Classifications
A; A23; A23F; A23F3/00; A23F3/16; A23F3/30
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
76 words
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 characterised 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.
Claim 2
Dependent Claim
76 words
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 characterised 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.
Claim 3
Dependent Claim
43 words
A process according to claim 1 characterised in that the hot-water extract of the black tea leaves is concentrated to a solids content of from 6% to 11% and cooled to a temperature from 7.5°C to 12.5°C before being treated with the catechin.
Claim 4
Dependent Claim
27 words
A process according to claim 1 characterised in that the catechin may be catechin, epicatechin, gallocatechin, epigallocatechin, epicatechingallate or epigallocatechin- gallate or any mixture of these compounds.
Claim 5
Dependent Claim
40 words
A process according to claim 1 characterised in that the quantity of catechin used is from 1.5 to 1.7 parts by weight of solids per part by weight of tea cream present in the hot-water extract of black tea leaves.
Claim 6
Dependent Claim
17 words
A process according to claim 1 characterised in that the catechin is extracted from green tea leaves.
Claim 7
Dependent Claim
31 words
A process according to claim 5 characterised in that the amount of green tea leaves used is from three to four parts by weight per part by weight of black tea.
Claim 8
Dependent Claim
26 words
A process according to claim 1 characterised in that the catechin is used as an aqueous solution having a solids content of from 10% to 30%.
Claim 9
Dependent Claim
32 words
A process according to claim 1 characterised in that the catechin is used as a cold water extract of green tea treated with a salt of a strong acidic cationic exchange resin.
Claim 10
Dependent Claim
16 words
A process according to claim 8 characterised in that the salt used is the sodium salt.
Claim 11
Dependent Claim
30 words
A process according to claim 8 characterised in that the amount of resin used is from 40 to 60% by weight based on the weight of dry green tea leaves.
References Cited (Backward Citations)
No citation records indexed.
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