Patent
Tea manufacturing process
Takanobu Takihara,Hitoshi Kinugasa,Hitoshi Niino,Sagesaka Yuko,Toshio Kawasaki,Nobuo Matsumoto,Kenji Shimaoka,Masami Sasame,Takashi Yamamoto +8 more
- 08 Dec 1997
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TL;DR: In this article, a cation exchange resin ionically bonded to a potassium ion is used to remove metal ions that cause muddiness or precipitation from the tea extract, and the natural flavor and quality of the tea are maintained more certainly.
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Abstract: Tea leaves are extracted in warm or hot water, and the obtained extract is contacted with a cation exchange resin ionically bonded to potassium ion. The potassium ion is ionically bonded to the cation exchange resin in advance. Divalent ions in the tea beverage are replaced with the potassium ions from the cation exchange resin. The electrical conductivity of the extract is controlled in this whole process. The natural flavor and quality of the tea are thereby maintained more certainly, since metal ions that cause muddiness or precipitation are effectively removed.
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References
Patent
Green tea extract subjected to cation exchange treatment and nanofiltration to improve clarity and color
Athula Ekanayake,John Robert Bunger,Marvin Joseph Mohlenkamp +2 more
- 21 Feb 1997
TL;DR: In this article, the green tea extract is treated with an amount of a food grade cation exchange resin effective to remove metal cations present in the extract and then contacted with a nanofiltration membrane while the treated extract is at a temperature of from about 100° to about 140 °F (from about 37.8° to approximately 60 °C).
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Patent
Tea concentrate having freeze thaw stability and enhanced cold water solubility
Scott William Syfert,Lora L. Spangler,Lowen Robert Morrison +2 more
- 18 Jun 1987
TL;DR: A tea concentrate which is stable against flake formation during cyclic freezing and thawing and which has enhanced solubility in cold water is disclosed in this article, which comprises from about 0.4 to about 8% by weight tea solids, an edible gum selected from xanthan gum, cellulose gums, locust bean gum, guar gum and mixtures thereof in specified amounts, and optionally a solubilizer selected from the sugars, the polyols and mixture thereof.
58
Patent
Solubilization of tea in cold water with catechin
Tito-Livio Lunder,Birgit Hoffmann,Corine-Madeleine Nielsen +2 more
- 04 Apr 1986
TL;DR: 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 leaf to precipitate substantially all the tea cream characterized in that the concentrated, cooled extract is treated with an appropriate quantity of a catechin or mixture of catechins capable of rendering the coffee cream soluble in cold water at from 10° C. to 30° C as discussed by the authors.
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Patent
Enzymatic clarification of tea extracts
Francis Agbo,Joseph Edgar Spradlin +1 more
- 12 May 1994
TL;DR: In this paper, a process for producing a tea extract which forms little or no haze when stored at refrigeration temperatures is described, where the process comprises incubating a mixture of oxidase, tannase and tea extract, and then separating insoluble solids from the tea extract.
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