JPS5695182A - Production of catechin - Google Patents
Production of catechinInfo
- Publication number
- JPS5695182A JPS5695182A JP17807680A JP17807680A JPS5695182A JP S5695182 A JPS5695182 A JP S5695182A JP 17807680 A JP17807680 A JP 17807680A JP 17807680 A JP17807680 A JP 17807680A JP S5695182 A JPS5695182 A JP S5695182A
- Authority
- JP
- Japan
- Prior art keywords
- catechin
- aqueous solution
- formula
- type
- caffeine
- 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.)
- Granted
Links
Abstract
PURPOSE: An aqueous solution of caffeine is added to an aqueous solution of tannins obtained from tea leaves to separate into the free-type and ester-type catechins, then, they are fractionated into each component, thus obtaining economically in a short time the titled substance controlling the viral diseases in plants.
CONSTITUTION: Tea leaves are extracted with warm water or an organic solvent to give an aqueous solution of tannins, to which is added an aqueous solution containing a more amount than the tannins of caffeine to separate into the free-type catechin groups such as epicatechin of formula I and epigallocatechin of formula II and the ester-type catechin such as epicatechin gallate of formula III or epigallocatechin gallate of formula IV and the caffeine is removed. Then, they are fractionated with a column filled with, e.g., Sephadex LH20 using a fractionation solvent, preferably a 4:1:2 mixture of n-butanol, acetone and water, when necessary, each fraction is recrystallized to give each catechin. Each catechin can be obtained simultaneously and the use of toxic substances is unnecessary.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17807680A JPS5695182A (en) | 1980-12-18 | 1980-12-18 | Production of catechin |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17807680A JPS5695182A (en) | 1980-12-18 | 1980-12-18 | Production of catechin |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1221279A Division JPS55105677A (en) | 1979-02-07 | 1979-02-07 | Production of catechins |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5695182A true JPS5695182A (en) | 1981-08-01 |
JPS576428B2 JPS576428B2 (en) | 1982-02-04 |
Family
ID=16042194
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17807680A Granted JPS5695182A (en) | 1980-12-18 | 1980-12-18 | Production of catechin |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5695182A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60190719A (en) * | 1984-03-09 | 1985-09-28 | Mitsui Norin Kk | Antitumor agent |
WO1994029404A1 (en) * | 1993-06-14 | 1994-12-22 | Berkem | Polyphenol derivative compositions and preparation thereof |
KR20030060723A (en) * | 2002-01-09 | 2003-07-16 | 박근형 | Separation and production methods of caffeine, epigallocatechin, epicatechin, epigallocatechingallate, and epicatechingallate from tea leaves |
WO2007041891A1 (en) * | 2005-10-08 | 2007-04-19 | The Hong Kong Polytechnic University | Methods of separating catechins from green tea leaves |
US8465782B2 (en) * | 2006-09-21 | 2013-06-18 | Immune Guard, LLC | Methods and materials for reducing risk of cold and/or flu |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2727471B2 (en) * | 1989-09-14 | 1998-03-11 | 三井農林株式会社 | Influenza virus infection prevention agent |
JP2888554B2 (en) * | 1989-09-20 | 1999-05-10 | 三井農林株式会社 | Mycoplasma infection preventive agent |
-
1980
- 1980-12-18 JP JP17807680A patent/JPS5695182A/en active Granted
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60190719A (en) * | 1984-03-09 | 1985-09-28 | Mitsui Norin Kk | Antitumor agent |
WO1994029404A1 (en) * | 1993-06-14 | 1994-12-22 | Berkem | Polyphenol derivative compositions and preparation thereof |
FR2706478A1 (en) * | 1993-06-14 | 1994-12-23 | Ovi Sa | Compositions of phenolic derivatives, their preparation and their applications as antioxidants. |
KR20030060723A (en) * | 2002-01-09 | 2003-07-16 | 박근형 | Separation and production methods of caffeine, epigallocatechin, epicatechin, epigallocatechingallate, and epicatechingallate from tea leaves |
WO2007041891A1 (en) * | 2005-10-08 | 2007-04-19 | The Hong Kong Polytechnic University | Methods of separating catechins from green tea leaves |
US8465782B2 (en) * | 2006-09-21 | 2013-06-18 | Immune Guard, LLC | Methods and materials for reducing risk of cold and/or flu |
Also Published As
Publication number | Publication date |
---|---|
JPS576428B2 (en) | 1982-02-04 |
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