JPS5651497A - Preparation of highly pure high-polymer tannin - Google Patents
Preparation of highly pure high-polymer tanninInfo
- Publication number
- JPS5651497A JPS5651497A JP12714779A JP12714779A JPS5651497A JP S5651497 A JPS5651497 A JP S5651497A JP 12714779 A JP12714779 A JP 12714779A JP 12714779 A JP12714779 A JP 12714779A JP S5651497 A JPS5651497 A JP S5651497A
- Authority
- JP
- Japan
- Prior art keywords
- tannin
- polymer
- precipitate
- aqueous solution
- lower alkanol
- 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
Landscapes
- Compounds Of Unknown Constitution (AREA)
Abstract
PURPOSE: To obtain the titled substance useful as a deprotenizing agent industrially and advantageously, by extracting a high-polymer tannin with a lower alkanol, precipitating the tannin with an aqueous solution of dipotassium hydrogenphosphate, dissolving the tannin with an aqueous solution of an alkaloid, and separating through gel filtration and dialyzing the tannin.
CONSTITUTION: A plant material containing high-polymer tannin, e.g. a young astringent persimmon, is brought into contact with a lower alkanol, e.g. methanol, to extract the high-polymer tannin in the lower alkanol phase. The lower alkanol phase containing the high-polymer tannin is brought into contact with an aqueous solution of dipotassium hydrogenphosphate to give a precipitate containing the high-polymer tannin. The precipitate is then dissolved in an aqueous solvent and brought into contact with an aqueous solution of an alkaloid capable of forming a precipitate with the tannin to give a precipitate containing the high-polymer tannin. The resultant precipitate is dissolved in a solvent and separated from the alkaloid by gel filtration and then purified by dialysis to afford the aimed substance.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12714779A JPS5651497A (en) | 1979-10-02 | 1979-10-02 | Preparation of highly pure high-polymer tannin |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12714779A JPS5651497A (en) | 1979-10-02 | 1979-10-02 | Preparation of highly pure high-polymer tannin |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5651497A true JPS5651497A (en) | 1981-05-09 |
JPS6225167B2 JPS6225167B2 (en) | 1987-06-02 |
Family
ID=14952771
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12714779A Granted JPS5651497A (en) | 1979-10-02 | 1979-10-02 | Preparation of highly pure high-polymer tannin |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5651497A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1090606C (en) * | 1996-12-27 | 2002-09-11 | 化学工业部北京化工研究院 | Method for purifying tannic acid |
EP1245613A2 (en) * | 2001-03-30 | 2002-10-02 | Kabushiki Kaisha Juken Sangyo | A method for the production of tannin and its use |
KR20030067082A (en) * | 2002-02-06 | 2003-08-14 | 김고정 | Method of tannin manufacture from unripe persimmon |
JP2003290603A (en) * | 2002-03-29 | 2003-10-14 | National Institute Of Advanced Industrial & Technology | Recovery method for polyflavonoid from woody bark |
CN105218834A (en) * | 2015-11-10 | 2016-01-06 | 桂林茗兴生物科技有限公司 | The method of high molecular tannin is extracted from persimmon |
-
1979
- 1979-10-02 JP JP12714779A patent/JPS5651497A/en active Granted
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1090606C (en) * | 1996-12-27 | 2002-09-11 | 化学工业部北京化工研究院 | Method for purifying tannic acid |
EP1245613A2 (en) * | 2001-03-30 | 2002-10-02 | Kabushiki Kaisha Juken Sangyo | A method for the production of tannin and its use |
EP1245613A3 (en) * | 2001-03-30 | 2002-12-04 | Kabushiki Kaisha Juken Sangyo | A method for the production of tannin and its use |
AU783264B2 (en) * | 2001-03-30 | 2005-10-06 | Kabushiki Kaisha Wood One (A/T/A Wood One Co., Ltd.) | A process for the production of tannin and its use |
KR20030067082A (en) * | 2002-02-06 | 2003-08-14 | 김고정 | Method of tannin manufacture from unripe persimmon |
JP2003290603A (en) * | 2002-03-29 | 2003-10-14 | National Institute Of Advanced Industrial & Technology | Recovery method for polyflavonoid from woody bark |
CN105218834A (en) * | 2015-11-10 | 2016-01-06 | 桂林茗兴生物科技有限公司 | The method of high molecular tannin is extracted from persimmon |
Also Published As
Publication number | Publication date |
---|---|
JPS6225167B2 (en) | 1987-06-02 |
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