Method for producing purified tea extract

A technology of tea extract and manufacturing method, applied in the field of manufacturing refined tea extract, capable of solving problems such as damage to commodity value

Active Publication Date: 2014-08-27
KAO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Tea beverages are usually produced by mixing functional substances such as non-polymer catechins in a dissolved state with tea extracts, etc. Bitterness or turbidity that impairs commodity value

Method used

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  • Method for producing purified tea extract
  • Method for producing purified tea extract
  • Method for producing purified tea extract

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0078] 1. Determination of non-polymeric catechins

[0079] Dilute the tea extract, tea extract 1, tea extract 1-3, and refined tea extract 1-16 with distilled water respectively, filter with a filter (0.45 μm), and use a high-performance liquid chromatograph (model SCL- 10AVP, manufactured by Shimadzu Corporation), installed with a packed column for octadecyl introduction liquid chromatography (L-Column TM ODS, 4.6 mmφ × 250 mm, manufactured by the Chemical Substance Evaluation Research Institute), and the column temperature was 35°C The following is carried out by gradient method. A product manufactured by Mitsui Norin was used as a standard product of catechins, and quantified by the calibration curve method. The distilled aqueous solution containing 0.1 mol / L acetic acid was used for the mobile phase A, the acetonitrile solution containing 0.1 mol / L acetic acid was used for the B liquid, the sample injection volume was 20 μL, and the wavelength of the UV detector was 280 ...

manufacture example 1

[0091] Manufacture of Cation Exchange Resins

[0092] 1) Manufacture of magnesium type cation exchange resin

[0093] 10 g of strongly acidic cation exchange resin (Type H, SK1BH, manufactured by Mitsubishi Chemical Corporation) was taken and stirred in 400 g of ion exchanged water containing 20 g of magnesium hydroxide for 40 hours. Next, after filtration, water washing was performed 3 times with 1200 g of ion-exchanged water to manufacture a magnesium type (Mg type) cation exchange resin.

[0094] 2) Manufacture of lithium type cation exchange resin

[0095] 10 g of strongly acidic cation exchange resin (Type H, SK1BH, manufactured by Mitsubishi Chemical Corporation) was taken and stirred in 500 g of 2M lithium hydroxide for 1 hour, and this operation was performed three times. Next, after filtration, water washing was performed 3 times with 1200 g of ion-exchange water, and lithium type (Li type) cation exchange resin was manufactured.

[0096] 3) Manufacture of potassiu...

manufacture example 2

[0101] Preparation of tea extract 1

[0102] 3.23 g of tea extract (32.9% by mass of non-polymer catechins) was taken and dissolved in 967.7 g of ion-exchanged water to prepare tea extract 1 containing 1.0% by mass of non-polymer catechins.

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PUM

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Abstract

The present invention provides a method for producing a purified tea extract with which solubility of non-polymer catechins in solvents has been increased. This method for producing a purified tea extract involves bringing a tea extract into contact with a magnesium or lithium cation exchange resin.

Description

technical field [0001] The present invention relates to a manufacturing method of refined tea extract. Background technique [0002] Due to the diversification of consumers' preferences and the improvement of health awareness, various beverages are on the market. Among them, tea beverages containing functional substances such as non-polymer catechins have attracted attention. Tea beverages are usually produced by mixing functional substances such as non-polymer catechins in a dissolved state with tea extracts, etc. Bitter taste or turbidity damages the commodity value. [0003] Therefore, in order to solve such a problem, various studies have been made on the purification method of the tea extract to be blended in the tea beverage. For example, it has been proposed that the color will not be deteriorated by dispersing green tea extract in a mixed solution having an organic solvent-water weight ratio of 91 / 9 to 97 / 3, and bringing it into contact with activated carbon and a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23F3/16
CPCA23F3/20A23F3/205
Inventor 四方健一大南英雄佐藤仁
Owner KAO CORP
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