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Production of non-polymerized katechin composition

A technology of catechins and manufacturing methods, which can be used in tea extraction and other fields, and can solve problems such as difficulty in removing smoke and odor

Inactive Publication Date: 2005-12-28
KAO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the by-product gallic acid produces sour and astringent taste, it may not be an effective method
[0008] In addition, the non-polymer catechin composition produced by frying tea leaves in a pot needs to be heated at a higher temperature than the non-polymer catechin composition produced by steaming tea leaves, so it is difficult to remove the smoke odor generated.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] The present invention 1

[0076] 1,200 g of green tea produced by the steaming method was extracted with 24,000 g of deionized water at 95° C. for 10 minutes, cooled, squeezed, and filtered through a wire mesh to obtain 18,810 g of an extract with a pH of 5.57. The concentration of non-polymer catechins in the extract was 711.9 mg / 100 mL, containing 133.9 g of non-polymer catechins, the gallate rate was 70.2%, and the gallate rate was 70.0%. In addition, the caffeine concentration is 88.3mg / 100mL, contains 16.6g of caffeine, and the ratio of caffeine / non-polymer catechins is 0.124(—). The concentration of gallic acid is 0.47mg / 100mL, containing 0.89g of gallic acid.

[0077] All the obtained water-soluble compositions were put into a stainless steel container, and 4.0 g (relative to non-polymer catechins 3.0%) Kikkoman tannase KTFH ( Industrial grade, above 500U / g) solution, the enzymatic reaction ends when the pH drops to 4.98 after 40 minutes. Then pass the liquid ...

Embodiment 2

[0100] Invention 5

[0101] 1200 g of pot-fried green tea from Yunnan Province, China was extracted with 24000 g of 95° C. deionized water for 10 minutes, cooled, squeezed, and filtered with a wire mesh to obtain 19630 g of an extract with a pH of 5.43. The concentration of non-polymer catechins in the extract was 709.1 mg / 100 mL, containing 139.2 g of non-polymer catechins, the gallate rate was 63.5%, and the gallate rate was 66.0%. In addition, the caffeine concentration was 136.2 mg / 100 mL, containing 26.6 g of caffeine, and the ratio of caffeine / non-polymer catechins was 0.191 (—).

[0102] Then, maintaining a temperature of 20°C, the particulate component was removed with a Laval type centrifuge. Next, 5192 mL of synthetic adsorbent Sepabeads SP-207 (manufactured by Mitsubishi Chemical Co., Ltd.) packed in a stainless steel column (inner diameter 72.3 mm × height 1600 mm, volume 5745 mL) was preliminarily charged with SV=6.9 [h -1 ] of 95% (v / v) ethanol 25960mL to wash,...

Embodiment 3

[0122] The present invention 10

[0123] 100 g of Miyazaki green tea No. 2 was extracted with 1500 g of 85° C. deionized water for 30 minutes, cooled, squeezed, and filtered with No. 2 filter paper to obtain 1200 g of an extract of Brix3.4. Next, 300 mL of synthetic adsorbent Sepabeads SP-207 (manufactured by Mitsubishi Chemical Co., Ltd.) packed in a glass column (inner diameter 40 mm×height 400 mm) was prepared in advance with SV=3 [h -1 ] of 95% (v / v) ethanol 900mL to wash, with SV=3[h -1 ] with 600mL of water. Then, with SV=3[h -1 ] 1200 g of the obtained extract was passed through, and the pass through was discarded. After absorbing the tea extract, with SV=3[h -1 ] Pass into 12% (v / v) ethanol water 1800mL after the SP-207 in the column, then with SV=3[h -1 ] into 1200 mL of 17% (v / v) ethanol water. The obtained eluate was concentrated to Brix20 under reduced pressure using a rotary evaporator to obtain 100.1 g of a non-polymer catechin composition.

[0124] The pr...

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PUM

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Abstract

The present invention relates to a method for making the non-polymeric catechin composition which comprises reduced non-polymeric catechin gallate ration and increased non-polymeric gallnut catechin ratio in the non-polymeric catechin and increased caffeinum amount and is highly prepared. The method adds the water-soluble composition extracted from the green tea by water into the column filled with synthetic adsorbent with a solution amount 0.5 to 20 (v / v) relative to the synthetic adsorbent, leads to the non-polymeric catechin in the water-soluble composition adsorb and is executed with washing with water 1 to 10 (v / v) times relative to the synthetic adsorbent, and then is executed by 10 to 95vol 5.675405e-307thanol water with 0.5 to 20 (v / v) times of the filling volume amount of the synthetic adsorbent.

Description

technical field [0001] The present invention relates to highly refined non-polymer catechins with reduced caffeine content without impairing the non-polymer catechin components contained in a water-soluble composition extracted with water from green tea leaves A method for the manufacture of a class composition. Background technique [0002] It is known that catechin has an action of inhibiting α-amylase activity and the like (Patent Document 1: JP-A-3-133928). In order to achieve this physiological effect, an adult needs to drink 4 to 5 cups of tea a day, so in order to more easily ingest a large amount of catechins, a technology of blending catechins in a high concentration in beverages is expected. [0003] One of such methods is a method of adding catechin in a dissolved state to beverages using a water-soluble composition such as a green tea extract concentrate. However, it is known that, depending on the type of beverages to which catechins are compounded at a high c...

Claims

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Application Information

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IPC IPC(8): A23F3/18
Inventor 福田昌弘高桥宏和小西敦
Owner KAO CORP
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