CN106046003B - A method of from Extraction of Caffeine From Tea - Google Patents
A method of from Extraction of Caffeine From Tea Download PDFInfo
- Publication number
- CN106046003B CN106046003B CN201610394609.0A CN201610394609A CN106046003B CN 106046003 B CN106046003 B CN 106046003B CN 201610394609 A CN201610394609 A CN 201610394609A CN 106046003 B CN106046003 B CN 106046003B
- Authority
- CN
- China
- Prior art keywords
- caffeine
- solution
- extraction
- tea
- boiling condition
- 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.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D473/00—Heterocyclic compounds containing purine ring systems
- C07D473/02—Heterocyclic compounds containing purine ring systems with oxygen, sulphur, or nitrogen atoms directly attached in positions 2 and 6
- C07D473/04—Heterocyclic compounds containing purine ring systems with oxygen, sulphur, or nitrogen atoms directly attached in positions 2 and 6 two oxygen atoms
- C07D473/06—Heterocyclic compounds containing purine ring systems with oxygen, sulphur, or nitrogen atoms directly attached in positions 2 and 6 two oxygen atoms with radicals containing only hydrogen and carbon atoms, attached in position 1 or 3
- C07D473/12—Heterocyclic compounds containing purine ring systems with oxygen, sulphur, or nitrogen atoms directly attached in positions 2 and 6 two oxygen atoms with radicals containing only hydrogen and carbon atoms, attached in position 1 or 3 with methyl radicals in positions 1, 3, and 7, e.g. caffeine
Abstract
The invention discloses a kind of methods from Extraction of Caffeine From Tea, include the following steps：Mixing in solution A is added in tealeaves, is heated to slight boiling condition, 15 30min of slight boiling condition is kept, filtrate is obtained by filtration；By concentrating filter liquor, roast, distilling obtains caffeine, wherein solution A is one kind in alkaline aqueous solution or inorganic salt solution.The present invention is at low cost, be avoided that roast and sublimation process in generate due to there are problems that for organic solvent carbonization or burn, extraction time can be greatly shortened, improve extraction efficiency, and easy to operate, high income, caffeine it is high-quality.
Description
Technical field
The present invention relates to Carbonado Diamond technical field more particularly to a kind of methods from Extraction of Caffeine From Tea.
Background technology
Caffeine is also known as caffeine, and its chemical name is 1,3,7- trimethyl -3,7- dihydro -1H- purine -2,6- diketone water
Close object, chemical formula C8H10N4O2, relative molecular weight 194.2, soluble easily in water, ether, chloroform, dichloromethane, for white knot
Crystalline flour end, odorless, bitter.Caffeine is a kind of xanthine alkaloid compound, is a kind of central nervous excitation agent, can be temporary
Drive away sleepiness and regain one's vigor.There are coffee, tea, soft drink and the energy drink of caffeine ingredient in very great demand, therefore, coffee
Because being also the psychotropic substances being most commonly used in the world.Contain alkaloid in tealeaves, alkaloid includes mainly caffeine, can
Theobromine and theophylline, wherein caffeine account for major part, and content 3-5% is the important sources of medical caffeine.Usually from tealeaves
Extraction obtains caffeine.
Currently, the method for extracting caffeine has：Solvent extraction method, supercritical CO2Extraction method, adsorbent and eluant, eluent extract
Method, wherein solvent extraction method is most common method.Solvent extraction method is mainly extracted by using organic solvent such as ethyl alcohol,
And combine Soxhlet extraction device to carry out the repeatedly extracting of continuous cycle, by concentrate, roast, distilling obtains caffeine.But solvent
Extraction method selects the organic solvents such as ethyl alcohol to do Extraction solvent, and the rate of recovery is relatively low, and cost is higher；Roast and sublimation process in by
Product is set to be easy carbonization or burn in the presence of the organic solvents such as ethyl alcohol；Continuous cycle extracting is carried out using Soxhlet extraction device
When, elapsed time is longer.
Invention content
Basic background technology, the present invention propose a kind of method from Extraction of Caffeine From Tea,
The present invention is at low cost, be avoided that roast and sublimation process in generate due to the presence of organic solvent carbonization or what is burnt ask
Topic, can greatly shorten extraction time, improve extraction efficiency, and easy to operate, high income, caffeine it is high-quality.
A kind of method from Extraction of Caffeine From Tea proposed by the present invention, includes the following steps：Solution A is added in tealeaves
Middle mixing is heated to slight boiling condition, keeps slight boiling condition 15-30min, filtrate is obtained by filtration；By concentrating filter liquor, roasts, rises
China obtains caffeine, wherein solution A is one kind in alkaline aqueous solution or inorganic salt solution.
Preferably, the bulking value (g/ml) of tealeaves and solution A is than being 1：6-10.
Preferably, the weight fraction of solute is 3-4wt% in solution A.
Preferably, solution A be calcium hydroxide aqueous solution, aqueous sodium carbonate, sodium-chloride water solution, magnesium chloride brine or
One kind in calcium chloride water.
Preferably, tealeaves is crushed, mixing in solution A is added after grinding, be heated to slight boiling condition, keep slight boiling condition
Filtrate is obtained by filtration in 15-30min；Filtrate is concentrated to give concentrate；Calcium oxide mixing is added into concentrate, roasts to obtain
Dried powder；Dried powder is taken to handle to obtain caffeine through distillation, wherein solution A is alkaline aqueous solution or inorganic salt solution
In one kind.
Preferably, the bulking value (g/ml) of calcium oxide and concentrate is than being 1：3-5.
Preferably, it takes dried powder to be warming up to 120 DEG C or more, handles to obtain caffeine through distillation.
Above-mentioned water is purified water.
The present invention selects water cheap and easy to get to replace organic solvent, can reduce cost, and be avoided that and roasting and rising
Carbonization is generated during China due to there are problems that for organic solvent or is burnt；Using directly heating cooperation inorganic salt solution
Or the extracting method of alkaline aqueous solution can greatly shorten extraction time compared to conventional solvent Soxhlet extraction, improve extraction effect
Rate, and it is easy to operate, equipment is convenient, is suitble to industrialized production；Select inorganic salt solution or alkaline aqueous solution to tealeaves into
Row extraction, can be obviously shortened extraction time, improve yield, and can improve the quality of product caffeine.
Specific implementation mode
In the following, technical scheme of the present invention is described in detail by specific embodiment.
Embodiment 1
A method of from Extraction of Caffeine From Tea, include the following steps：Mixing in alkaline aqueous solution is added in tealeaves,
It is heated to slight boiling condition, slight boiling condition 20min is kept, filtrate is obtained by filtration；By concentrating filter liquor, roast, distilling obtains coffee
Cause.
Embodiment 2
A method of from Extraction of Caffeine From Tea, include the following steps：Tealeaves is added in inorganic salt solution and is mixed
It is even, it is heated to slight boiling condition, slight boiling condition 15min is kept, filtrate is obtained by filtration；By concentrating filter liquor, roast, distilling obtains coffee
Coffee because.
Embodiment 3
A method of from Extraction of Caffeine From Tea, include the following steps：It is 3wt% chlorine that weight fraction, which is added, in tealeaves
Change mixing in calcium aqueous solution, be heated to slight boiling condition, keeps slight boiling condition 30min, filtrate is obtained by filtration；By concentrating filter liquor,
It roasts, distilling obtains caffeine, wherein the bulking value (g/ml) of tealeaves and calcium chloride water is than being 1：6.Caffeine it is pure
Degree is 99.1%, yield 2.16%.
Embodiment 4
A method of from Extraction of Caffeine From Tea, include the following steps：It is 4wt% chlorine that weight fraction, which is added, in tealeaves
Change mixing in magnesium aqueous solution, be heated to slight boiling condition, keeps slight boiling condition 20min, filtrate is obtained by filtration；By concentrating filter liquor,
It roasts, distilling obtains caffeine, wherein the bulking value (g/ml) of tealeaves and magnesium chloride brine is than being 1：10.Caffeine
Purity is 99.0%, yield 2.05%.
Embodiment 5
A method of from Extraction of Caffeine From Tea, include the following steps：Tealeaves is crushed, weight point is added after grinding
Number is mixing in 3.5wt% sodium-chloride water solutions, is heated to slight boiling condition, keeps slight boiling condition 25min, filtrate is obtained by filtration；
Filtrate is concentrated to give concentrate；Calcium oxide mixing is added into concentrate, roasts to obtain dried powder；Dried powder is taken to heat up
It to 120 DEG C or more, handles to obtain caffeine through distillation, wherein bulking value (g/ml) ratio of tealeaves and sodium-chloride water solution is
1：7, the bulking value (g/ml) of calcium oxide and concentrate is than being 1：5.The purity of caffeine is 99.3%, yield 1.93%.
Embodiment 6
A method of from Extraction of Caffeine From Tea, include the following steps：Tealeaves is crushed, weight point is added after grinding
Number is mixing in 3.8wt% aqueous sodium carbonates, is heated to slight boiling condition, keeps slight boiling condition 20min, filtrate is obtained by filtration；
Filtrate is concentrated to give concentrate；Calcium oxide mixing is added into concentrate, roasts to obtain dried powder；Dried powder is taken to heat up
It to 120 DEG C or more, handles to obtain caffeine through distillation, wherein bulking value (g/ml) ratio of tealeaves and aqueous sodium carbonate is
1：9, the bulking value (g/ml) of calcium oxide and concentrate is than being 1：3.The purity of caffeine is 99.1%, yield 2.57%.
Embodiment 7
A method of from Extraction of Caffeine From Tea, include the following steps：Tealeaves is crushed, weight point is added after grinding
Number is mixing in 3.2wt% calcium hydroxide aqueous solutions, is heated to slight boiling condition, keeps slight boiling condition 15min, filter is obtained by filtration
Liquid；Filtrate is concentrated to give concentrate；Calcium oxide mixing is added into concentrate, roasts to obtain dried powder；Take dried powder
120 DEG C or more are warming up to, handles to obtain caffeine through distillation, wherein the bulking value (g/ of tealeaves and calcium hydroxide aqueous solution
Ml) than being 1：6, the bulking value (g/ml) of calcium oxide and concentrate is than being 1：4.The purity of caffeine is 99.4%, and yield is
3.60%.
Test example 1
Compare 1 group：Make calcium hydroxide aqueous solution into purified water, other modes of operation are the same as embodiment 7.
Compare 2 groups：Make calcium hydroxide aqueous solution into tap water, other modes of operation are the same as embodiment 7.
Compare 3 groups：Take tealeaves according to solvent extraction method extracting caffeine.
Detect embodiment 7,1 group of control, 2 groups of control, 3 groups of caffeine purity extracted of control and calculated yield, knot
Fruit such as following table：
| Group | Yield % | Caffeine purity % |
| Embodiment 7 | 3.60 | 99.4 |
| Compare 1 group | 0 | --- |
| Compare 2 groups | 0.5 | 98.3 |
| Compare 3 groups | 1.48 | 97.9 |
As can be seen from the above table, individual purified water extraction is less than caffeine；Simple tap water can only extract on a small quantity
Caffeine, yield are too low；The caffeine purity that solvent extraction method obtains is relatively low, and yield is also far below the present invention；The present invention extracts
Obtained caffeine is high-quality, high income.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (4)
1. a kind of method from Extraction of Caffeine From Tea, which is characterized in that include the following steps：Tealeaves is added in solution A
Mixing is heated to slight boiling condition, keeps slight boiling condition 15-25min, filtrate is obtained by filtration；Filtrate is concentrated to give concentrate；To
Calcium oxide mixing is added in concentrate, roasts, distilling obtains caffeine, wherein solution A is calcium hydroxide aqueous solution, sodium carbonate
One kind in aqueous solution, sodium-chloride water solution, magnesium chloride brine or calcium chloride water；
The weight fraction of solute is 3-4wt% in solution A；
Tealeaves and the w/v of solution A are 1g：6-10ml.
2. according to claim 1 from the method for Extraction of Caffeine From Tea, which is characterized in that crush tealeaves, after grinding
Mixing in solution A is added, is heated to slight boiling condition, keeps slight boiling condition 15-25min, filtrate is obtained by filtration；Filtrate is concentrated to give
To concentrate；Calcium oxide mixing is added into concentrate, roasts to obtain dried powder；Dried powder is taken to handle to obtain coffee through distillation
Coffee because.
3. according to claim 2 from the method for Extraction of Caffeine From Tea, which is characterized in that the weight of calcium oxide and concentrate
Amount volume ratio is 1g：3-5ml.
4. according to claim 2 from the method for Extraction of Caffeine From Tea, which is characterized in that dried powder is taken to be warming up to
It 120 DEG C or more, handles to obtain caffeine through distillation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610394609.0A CN106046003B (en) | 2016-05-31 | 2016-05-31 | A method of from Extraction of Caffeine From Tea |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610394609.0A CN106046003B (en) | 2016-05-31 | 2016-05-31 | A method of from Extraction of Caffeine From Tea |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106046003A CN106046003A (en) | 2016-10-26 |
| CN106046003B true CN106046003B (en) | 2018-07-24 |
Family
ID=57169540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610394609.0A Active CN106046003B (en) | 2016-05-31 | 2016-05-31 | A method of from Extraction of Caffeine From Tea |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106046003B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109699662A (en) * | 2019-02-26 | 2019-05-03 | 廊坊市维金农业科技有限公司 | A kind of preparation method of the disease-resistant preparation of the plant anthelmintic containing caffeine |
| CN110859234A (en) * | 2019-11-29 | 2020-03-06 | 湖北工业大学 | High GABA low caffeine black tea dissolved bean and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1051481A (en) * | 1989-11-09 | 1991-05-22 | 石天齐 | From tealeaves, extract production method of natural caffeine |
| CN1097757A (en) * | 1993-07-23 | 1995-01-25 | 煤炭科学研究总院合肥研究所 | Process for preparing tea natural alkaloid-caffeine |
| CN102453031A (en) * | 2010-10-20 | 2012-05-16 | 曾科 | Method for extracting caffeine from tea leaf |
-
2016
- 2016-05-31 CN CN201610394609.0A patent/CN106046003B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1051481A (en) * | 1989-11-09 | 1991-05-22 | 石天齐 | From tealeaves, extract production method of natural caffeine |
| CN1097757A (en) * | 1993-07-23 | 1995-01-25 | 煤炭科学研究总院合肥研究所 | Process for preparing tea natural alkaloid-caffeine |
| CN102453031A (en) * | 2010-10-20 | 2012-05-16 | 曾科 | Method for extracting caffeine from tea leaf |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106046003A (en) | 2016-10-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101928639B (en) | Natural tea essence prepared by using tea and preparation method thereof | |
| WO2011162201A1 (en) | Green tea extract | |
| JP2007295921A (en) | Method for producing tea extract | |
| JP4679362B2 (en) | Preparation method of tea extract | |
| CN106046003B (en) | A method of from Extraction of Caffeine From Tea | |
| CN103705600B (en) | Method for producing green coffee bean extract | |
| CN104904918B (en) | A kind of functional instant tea and preparation process | |
| NO162262B (en) | PROCEDURE FOR PREPARING COFFEE EXTRACTS. | |
| JP2012005419A (en) | Method of producing tea extract | |
| CN101292695B (en) | Method for preparing coffee condensed juice | |
| JP5213832B2 (en) | Method for reducing acetic acid in roasted plant raw material aqueous extract | |
| CN102422959B (en) | Method for preparing instant coffee by ultrasonic-assisted extraction | |
| JP2520287B2 (en) | Method for producing barley tea extract with excellent flavor | |
| JPS6052785B2 (en) | Soy milk production method | |
| CN101928643B (en) | Preparation method for compound with flavor of Xinyang maojian tea | |
| JP2007117006A (en) | Method for producing tea beverage | |
| CN103652158A (en) | Instant molecular herbal tea of lotus leaf-mulberry leaf-chrysanthemum tea | |
| CN106720701A (en) | A kind of preparation method and application of instant lotus leaf tea powder | |
| CN107879913B (en) | Preparation method of natural benzaldehyde | |
| CN107674764A (en) | The carbon dioxide method for extracting of galic essential oil | |
| CN103859092A (en) | Instant ginger garlic tea and preparation method thereof | |
| CN113973955A (en) | Tea concentrated solution and preparation method thereof | |
| CN104130260A (en) | Caffeine extraction method | |
| CN1029723C (en) | Production method of natural caffeine extracted from tea | |
| JPH0212550B2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210121 Address after: 242700 No.59, Meilin Avenue, Huangshan Economic Development Zone, Huangshan City, Anhui Province Patentee after: SINOPHARM BIOTECHNOLOGY (HUANGSHAN) Co.,Ltd. Address before: No. 1688, Lianhua Road, Jing Kai District, Hefei, Anhui Patentee before: HEFEI NORMAL University |