Production method for composition which contains non-polymer catechin

Patent metadata

Field	Value
Publication number	US-11812759-B2
Application number	US-201716464550-A
Country	US
Kind code	B2
Filing date	Oct 30, 2017
Priority date	Nov 29, 2016
Publication date	Nov 14, 2023
Grant date	Nov 14, 2023

Abstract

Provided is a production method for a composition containing non-polymer catechins, including the following step (A): (A) a step of bringing tea leaves into contact with an aqueous solution having a Brix of from 0.2% to 1.0% at from 80° C. to 100° C.

First claim

The invention claimed is:

1. A production method for a composition comprising non-polymer catechins, the method comprising:
(A) bringing tea leaves into contact with a tea extract solution having a Brix of from 0.2% to 1.0% at from 83° C. to 100° C.; and
(B) extracting the tea leaves after step (A) with water at a temperature of from 50° C. to 100° C.

2. The production method according to claim 1 , wherein the tea extract solution in step (A) has a Brix of from 0.2% to 0.8%.

3. The production method according to claim 1 , wherein a period of time for which the contact of the tea leaves with the tea extract solution in step (A) is performed is from 3 minutes to 7 minutes.

4. The production method according to claim 1 , wherein the production method does not comprise drying the tea leaves after step (A) and before step (B).

5. The production method according to claim 1 , wherein, before step (B), the tea leaves after step (A) are cut.

6. The production method according to claim 1 , further comprising, after step (B), subjecting the tea extract solution obtained through step (B) to solid-liquid separation.

7. The production method according claim 1 , wherein a period of time for which the extracting is performed is from 5 minutes to 120 minutes.

8. The production method according to claim 1 , wherein in step (A) the tea leaves comprise full leaves.

9. The production method according to claim 1 , wherein the bringing the tea leaves into contact with the tea extract solution comprises immersing the tea leaves in the tea extract solution, or feeding the tea extract solution in a shower form to the tea leaves.

10. The production method according to claim 1 , wherein in step (A) the tea extract solution is present in an amount of from 3 times by mass to 100 times by mass with respect to the tea leaves.

11. The production method according to claim 1 , wherein the tea extract solution in step (A) comprises a green tea extract solution.

12. The production method according to claim 5 , wherein the tea leaves each have a size of from 1 mm to 20 mm after the cutting.

13. The production method according to claim 1 , wherein the extracting comprises at least one selected from the group consisting of stirring extraction, column extraction, and drip extraction.

14. The production method according to claim 1 , wherein in step (B) water is present in an amount of 1 time by mass to 20 times by mass with respect to the tea leaves.

15. The production method according to claim 1 , wherein the bringing the tea leaves into contact with the tea extract, solution having the Brix of from 0.2% to 1.0% is conducted at from 85° C. to 100° C.

Assignees

• Kao Corp

Inventors

• Yamawaki Kenji
• Sugiyama Yukiteru

Classifications

• A23F3/38 Primary

  Reducing or removing alkaloid content from tea extract · CPC title

• A23F3/12

  Rolling or shredding tea leaves · CPC title

• A23F3/18

  Extraction of water soluble tea constituents ({A23F3/166 takes precedence; } isolation of tea flavour or tea oil A23F3/42) · CPC title

• A23F3/20

  Removing unwanted substances ({A23F3/166 takes precedence; } reducing or removing alkaloid content A23F3/38) · CPC title

• A23F3/163 Primary

  Liquid or semi-liquid tea extract preparations, e.g. gels or liquid extracts in solid capsules · CPC title