CN1051072C - Process for extracting tea polyphenol from tea leaves - Google Patents
Process for extracting tea polyphenol from tea leaves Download PDFInfo
- Publication number
- CN1051072C CN1051072C CN93105511A CN93105511A CN1051072C CN 1051072 C CN1051072 C CN 1051072C CN 93105511 A CN93105511 A CN 93105511A CN 93105511 A CN93105511 A CN 93105511A CN 1051072 C CN1051072 C CN 1051072C
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- China
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- tea
- polyphenol
- extraction
- tealeaves
- tea leaves
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- 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.)
- Expired - Fee Related
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- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Medicines Containing Plant Substances (AREA)
Abstract
The present invention relates to a method for extracting tea polyphenol from tea leaves, and belongs to the field of deep processing of agricultural and sideline products. Tea leaves are used as raw material, and are extracted by solvent to produce tea polyphenol. The present invention is characterized in that before the tea leaves are extracted, the compounds which are contained in the tea leaves and hinder the extraction of the tea polyphenol are removed by a preprocessing agent; the preprocessing agent can be ethane, chloroform, isoamyl alcohol, 120<#> gasoline, ether, petroleum oil and benzene or mixed solvent which is combined by any two compounds according to the volume ratio of 1 to 1. The tea polyphenol extracted by the present invention has the advantages of high output, good quality, low cost and high economic benefits.
Description
The present invention relates to agricultural byproducts deep process technology field, exactly is a kind of method of extracting tea-polyphenol from tealeaves.
Tea-polyphenol is the natural radical scavenger of a kind of ideal, as food antioxidant, can stop or delay the greasy oxidation of food.Studies show that oxidized food grease can directly cause human body diseases, aging, immunologic function decline and cancer etc.Therefore, current domestic and international food science and technology work is classified the development and use natural antioxidants as the emphasis problem.Pick up the Suo Xianyou document, from tealeaves, extract the method for tea-polyphenol natural antioxidants, mainly contain following weak point:
1, high yield low-quality.Quality product is relatively poor, the foreign matter content height, thereby Application Areas is restricted.
2, high-quality low yield.Production unit and material expensive, operation control difficulty is big, and the cost height is difficult to apply.
The objective of the invention is to overcome the deficiency of prior art, aim to provide a kind of before the extraction tea-polyphenol, adopt the compound that hinders tea-polyphenol to be extracted out in the pre-treatment solvent removal tealeaves earlier, thereby obtain the productive rate height, the measured a kind of method of from tealeaves, extracting tea-polyphenol of matter.The object of the present invention is achieved like this:
A kind of method of from tealeaves, extracting tea-polyphenol, with tealeaves is raw material, adopt solvent extraction to produce tea-polyphenol, it is characterized in that contained compound in the tealeaves that tealeaves earlier is extracted out with pre-treatment solvent removal obstruction tea-polyphenol before extraction, described pre-treatment solvent is a hexane, pre-treatment take off assorted condition be temperature in 10-80 ℃ of scope, the time was at 10 minutes to 10 hours, the temperature height is the time weak point then, and the low then time of temperature is long.
The step that described solvent method is produced tea-polyphenol is, process pre-treatment solvent takes off the tea raw material after mixing, with 1-20 times of weight 30-90% methanol extraction after-filtration, vacuum concentration is to 5-20 times, concentrated solution with 0.5-5 times of chloroform extraction after, raffinate is again with 0.5-10 times of ethyl acetate extraction, acetic acid ethyl acetate extract through vacuum concentration 5-10 doubly after, through vacuum-drying, pulverize the tea-polyphenol pulvis.Advantage of the present invention is:
1, extract the output height of tea-polyphenol, quality is good, thereby the economic benefit height;
2, adopt general extraction equipment production, can a tractor serves several purposes, cost is low, is beneficial to apply;
3, by product has chlorophyll, caffeine and animal concentrated feed, and tea raw material is fully utilized, the added value height.
Embodiment:
100 gram low-grade green tea powder add 10 times of hexanes, in 60 ℃ of water-baths, stir extraction 4 hours, filter; Filter residue adds 1000ml, 90% methyl alcohol, in 60 ℃ of water-baths, stirs extraction 4 hours, filters; Methanol extraction liquid is concentrated in vacuo to 100ml under 60 ℃, concentrated solution is with 3 times of volume chloroforms shaking out 1 hour, separatory; Raffinate 500ml ethyl acetate shaking out 2 hours, separatory; Acetic acid ethyl acetate extract is concentrated in vacuo to 100ml under 60 ℃; Concentrated solution becomes dry product in 40 ℃ of vacuum-dryings, again through pulverize the tea-polyphenol pulvis.
Handle through the present invention, tea-polyphenol pulvis productive rate reaches more than 8%, and content reaches more than 85%, and the catechin yield reaches more than 60%.
Claims (1)
1, a kind of method of from tealeaves, extracting tea-polyphenol, with tealeaves is raw material, adopt solvent extraction to produce tea-polyphenol, it is characterized in that contained compound in the tealeaves that tealeaves earlier is extracted out with pre-treatment solvent removal obstruction tea-polyphenol before extraction, described pre-treatment solvent is a hexane, it is that temperature is in 10-80 ℃ of scope that the pre-treatment solvent takes off assorted condition, time was at 10 minutes to 10 hours, take off assorted tea raw material through the pre-treatment solvent, with 1-20 doubly, 30-90% methanol extraction after-filtration, vacuum concentrated filtrate 5-20 doubly, with 0.5-5 times of volume chloroform extraction, with 0.5-10 times of ethyl acetate extraction, acetic acid ethyl acetate extract is behind vacuum concentration 5-10 times volume, through vacuum-drying again for raffinate, pulverize and promptly get the tea-polyphenol pulvis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93105511A CN1051072C (en) | 1993-05-08 | 1993-05-08 | Process for extracting tea polyphenol from tea leaves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93105511A CN1051072C (en) | 1993-05-08 | 1993-05-08 | Process for extracting tea polyphenol from tea leaves |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1094706A CN1094706A (en) | 1994-11-09 |
| CN1051072C true CN1051072C (en) | 2000-04-05 |
Family
ID=4985759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN93105511A Expired - Fee Related CN1051072C (en) | 1993-05-08 | 1993-05-08 | Process for extracting tea polyphenol from tea leaves |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1051072C (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1053693C (en) * | 1996-04-10 | 2000-06-21 | 济南啤酒(集团)股份有限公司白马山啤酒厂 | Tech. for brewing beer containing SOD, hedgehogt polysaccharide and theaflavin |
| CN1107075C (en) * | 2000-07-07 | 2003-04-30 | 刘征涛 | Microwave process of extracting polysaccharides and polyphenols from tea |
| CN104096382B (en) * | 2014-07-23 | 2016-03-16 | 安徽红星药业股份有限公司 | The extraction system of tea |
| CN105746786B (en) * | 2016-03-21 | 2019-08-06 | 信阳农林学院 | A kind of preparation method of low-caffeine, high dissolubility sugar wing Eurya plant tea |
| CN105693781A (en) * | 2016-03-25 | 2016-06-22 | 贵州黔商生态农业科技有限公司 | Technology for extracting tea polyphenol in tea leaves |
| CN106690320B (en) * | 2017-01-03 | 2020-10-16 | 武汉轻工大学 | Preparation method of high-purity tea polyphenol |
| CN107050249A (en) * | 2017-05-08 | 2017-08-18 | 山东省农业科学院农产品研究所 | The extracting method of plant polyphenol in a kind of purple Chinese yam |
| CN107468823A (en) * | 2017-08-16 | 2017-12-15 | 广西克鲁尼茶叶生物科技有限公司 | A kind of method of safe and efficient extraction Tea Polyphenols |
| CN109696503A (en) * | 2019-02-26 | 2019-04-30 | 中国农业科学院作物科学研究所 | The detection method and its application of metabolin in a kind of plant leaf blade |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1034947A (en) * | 1988-02-12 | 1989-08-23 | 中国农业科学院茶叶研究所 | Preparation process for natural tea antioxiant |
| CN1067895A (en) * | 1992-08-06 | 1993-01-13 | 重庆华康生物化工厂 | From tealeaves, extract the production technique of natural caffeine |
-
1993
- 1993-05-08 CN CN93105511A patent/CN1051072C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1034947A (en) * | 1988-02-12 | 1989-08-23 | 中国农业科学院茶叶研究所 | Preparation process for natural tea antioxiant |
| CN1067895A (en) * | 1992-08-06 | 1993-01-13 | 重庆华康生物化工厂 | From tealeaves, extract the production technique of natural caffeine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1094706A (en) | 1994-11-09 |
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