GB1485362A - Process for obtaining a tea extract - Google Patents

Process for obtaining a tea extract

Info

Publication number
GB1485362A
GB1485362A GB4164973A GB4164973A GB1485362A GB 1485362 A GB1485362 A GB 1485362A GB 4164973 A GB4164973 A GB 4164973A GB 4164973 A GB4164973 A GB 4164973A GB 1485362 A GB1485362 A GB 1485362A
Authority
GB
United Kingdom
Prior art keywords
ammonium bicarbonate
obtaining
tea extract
sept
ammonia
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.)
Expired
Application number
GB4164973A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Unilever PLC
Original Assignee
Unilever PLC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Unilever PLC filed Critical Unilever PLC
Priority to GB4164973A priority Critical patent/GB1485362A/en
Priority to US05/501,955 priority patent/US3971858A/en
Priority to IN1965/CAL/1974A priority patent/IN143108B/en
Priority to CH1199474A priority patent/CH589420A5/xx
Priority to CA208,433A priority patent/CA1030804A/en
Publication of GB1485362A publication Critical patent/GB1485362A/en
Expired legal-status Critical Current

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
    • A23F3/16—Tea extraction; Tea extracts; Treating tea extract; Making instant tea
    • A23F3/18—Extraction of water soluble tea constituents

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Tea And Coffee (AREA)

Abstract

1485362 Extracting tea leaves UNILEVER Ltd 2 Sept 1974 [5 Sept 1973 26 Oct 1973] 41649/73 and 50085/73 Heading A2B Tea leaves are extracted with an aqueous solution of ammonium bicarbonate or of ammonia. Preferably a solution containing between 0.1 and 3.0% of ammonium bicarbonate is used, alternatively between 1% and 30% by w.t. of the tea solids may be used. The extract obtained may be heat treated at a pH of 3.5 to 8.5 by adding hydrogen peroxide thereto at a temperature greater than 70‹C. In a multi-stage extraction the ammonia or ammonium bicarbonate is added towards the end of the process.
GB4164973A 1973-09-05 1973-09-05 Process for obtaining a tea extract Expired GB1485362A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB4164973A GB1485362A (en) 1973-09-05 1973-09-05 Process for obtaining a tea extract
US05/501,955 US3971858A (en) 1973-09-05 1974-08-30 Extracting tea using an aqueous solution of ammonium bicarbonate or ammonia
IN1965/CAL/1974A IN143108B (en) 1973-09-05 1974-09-02
CH1199474A CH589420A5 (en) 1973-09-05 1974-09-04
CA208,433A CA1030804A (en) 1973-09-05 1974-09-04 Extraction of tea leaves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4164973A GB1485362A (en) 1973-09-05 1973-09-05 Process for obtaining a tea extract

Publications (1)

Publication Number Publication Date
GB1485362A true GB1485362A (en) 1977-09-08

Family

ID=10420667

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4164973A Expired GB1485362A (en) 1973-09-05 1973-09-05 Process for obtaining a tea extract

Country Status (1)

Country Link
GB (1) GB1485362A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6348224B1 (en) 2000-03-16 2002-02-19 Lipton, Division Of Conopco, Inc. Black tea manufacture

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6348224B1 (en) 2000-03-16 2002-02-19 Lipton, Division Of Conopco, Inc. Black tea manufacture

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee