CN102178012A - Method for preparing low-caffeine tea leaves - Google Patents
Method for preparing low-caffeine tea leaves Download PDFInfo
- Publication number
- CN102178012A CN102178012A CN2011100827928A CN201110082792A CN102178012A CN 102178012 A CN102178012 A CN 102178012A CN 2011100827928 A CN2011100827928 A CN 2011100827928A CN 201110082792 A CN201110082792 A CN 201110082792A CN 102178012 A CN102178012 A CN 102178012A
- Authority
- CN
- China
- Prior art keywords
- tea
- caffeine
- solution
- low
- instant
- 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
- Medicines Containing Plant Substances (AREA)
- Tea And Coffee (AREA)
Abstract
The invention discloses a method for preparing low-caffeine tea leaves, which is to remove caffeine from fresh tea leaves or dry tea leaves by leaching in solution of tea polyphenol or low-caffeine instant tea powder and comprises the steps of: adding water into tea polyphenol or low-caffeine instant tea powder containing less than 0.5 percent of caffeine to prepare the tea polyphenol or low-caffeine instant tea powder solution at a concentration of 2 to 20 percent; placing the fresh tea leaves or dry tea leaves into the solution of tea polyphenol or low-caffeine instant tea powder to remove caffeine by leaching, wherein the weight-volume ratio of the fresh tea leaves to the solution is 1:4 to 1:8, and the weight-volume ratio of the dry tea leaves to the solution is 1:10 to 1:20; and taking the tea leaves out, centrifugally dewatering, drying and refining to obtain low-caffeine tea. When the method is used, the removal rate of the caffeine from the tea leaves reaches 95 percent, the tea polyphenol loss is prevented, and 90 percent of other effective ingredients can be retained, and pollution is prevented in a preparation process; and the equipment used in the invention is simple and requires small investment, the operation is convenient, and industrial batch production is convenient.
Description
Technical field
The present invention relates to a kind of preparation method of low caffeine tealeaves, belong to field of deep tea processing technology.
Background technology
Tealeaves has anti-ageing, antitumor, radioresistance, antifatigue, reduction cholesterol, prevents plurality of health care functions such as artery sclerosis human body, is to be subjected to one of beverage that the consumer likes most.But owing to contain the caffeine of excited brain and cardiac stimulus simultaneously in the tealeaves, the crowd that partial nerve is languisher and pregnant woman, children and cardiac function are weak after the high tealeaves of long-term drinking caffeine content, can cause uncomfortable or other side effect.Low caffeine tealeaves both can satisfy the demand of these consumer groups to drinking tea, and can segment tea market again, improved the level that becomes more meticulous of Tea Processing, had good market prospects.
The tea beverage of at present low caffeine and instant tea powder technology are ripe, enter the suitability for industrialized production stage.But the research of low caffeine traditional tea also not deeply, does not have simple and effective production method.Existing method mainly contains following several:
1. hot water extraction.Be soluble in the character of hot water according to caffeine, remove caffeine in the primary processing of tea stage with the hot water lixiviate and finish simultaneously and complete.The manufacture method of patent CN200610097734.1 low caffeinum green tea promptly is the patent about the method.Though the method is simple relatively, but the removal efficiency of caffeine is not high, can only make that the removal efficiency of caffeine reaches about 65% in the tealeaves, caffeine content is reduced to about 1% of tealeaves dry, and only be fit to produce green tea, the wastewater treatment load is big, and in caffein-free, also causes a large amount of losses of functional components such as Tea Polyphenols simultaneously.
2. the decompression sublimed method is to utilize the sublimable character of caffeine, reduce the sublimation temperature of caffeine under reduced pressure, thereby selectivity is removed caffeine from tealeaves.About the research of the method also seldom, and the result of existing research shows that the removal efficiency of caffeine is lower, only about 50%.
3. supercritical CO
2 extractionsMethod, the method can effectively remove the caffeine in the tealeaves, makes into that the content of caffeine is lower than 0.5% of tealeaves dry in the tea.Existing a lot of about the patent of the method, but become the tea fragrance loss serious, and present supercritical CO
2The extraction equipment costliness, treating capacity is little, is difficult in the domestic medium-sized and small enterprises to use.
Summary of the invention
The objective of the invention is at above-mentioned that several to produce finished tea caffeine removal efficiency not high, and other functional components loss serious situation of tealeaves, providing a kind of easy and simple to handle, cost is low, and is pollution-free, is easy to the preparation method of the low caffeine tea of suitability for industrialized production.
For reaching above purpose, the present invention by the following technical solutions:
The preparation method of described low caffeine tea is to remove caffeine in fresh tea passes or the stem tea with Tea Polyphenols or low caffeine instant tea powder aqueous solution extraction, and its step is as follows:
(1) Tea Polyphenols or instant tea powder solution preparation
Less than 1.0% Tea Polyphenols or instant tea powder, add water preparation mass fraction and be 2%～20% Tea Polyphenols or instant tea powder solution with low caffeine content;
(2) complete and caffein-free
Bright leaf of tea or stem tea are put into above-mentioned Tea Polyphenols or instant tea powder solution, and processing requirements is: 90 ℃～100 ℃ of temperature, time 2min～15min, and bright leaf of tea and above-mentioned solution weight volume ratio are 1: 4～1: 8, dipping completes, caffein-free; Stem tea and above-mentioned solution weight volume ratio are 1: 10～1: 20, dipping, caffein-free;
(3) dewatered drying
Take out the tealeaves after the lixiviate centrifugal or drain dehydration, oven dry, make with extra care low caffeine tea.
In the above-mentioned steps, when caffeine content is greater than 3mg/ml in Tea Polyphenols or the instant tea powder solution, recycle after removing wherein caffeine with lignocellulosic or macroporous resin chromatography.
The process conditions of dewatered drying are: vacuum for-0.08Mpa～-0.1Mpa, temperature is below 60 ℃.
Adopt the prepared low caffeine tea of the present invention, can make that the removal efficiency of caffeine reaches 95% in the tealeaves, the Tea Polyphenols free of losses, other effective ingredient can keep more than 90%, and low caffeine tealeaves still has the style of traditional tea; The more important thing is in preparation process pollution-freely, guaranteed the safety that becomes to sample tea.Device therefor of the present invention is simple, investment is little, easy to operate, applied widely, is the new method of producing low caffeine tea.
The specific embodiment
Below by specific embodiment technical scheme of the present invention and the effect that reaches thereof are further described.
Embodiment 1
1) Tea Polyphenols solution preparation: be lower than 0.5% with caffeine content, purity is greater than 98% Tea Polyphenols, is mixed with mass fraction and is 5% the Tea Polyphenols aqueous solution.
2) complete and caffein-free: the bright leaf 1Kg of tea is put into the above-mentioned Tea Polyphenols solution dipping of 8L complete treatment conditions, 95 ℃ of temperature, time 4min.Centrifugation or drain the back and take out tealeaves, solution 7.8L after the processing, the content that detects caffeine in the solution is 1.52mg/ml, add the 0.9Kg fresh tea passes once more, treatment conditions, 100 ℃ of temperature, time 5min, after processing finished, the content of caffeine was 3.21mg/ml (this solution can recycle after lignocellulosic or macroporous resin chromatography are deviate from caffeine) in the solution.
3), by traditional tea making method, knead, dry, refining become tea with the tealeaves centrifugal dehydration after the above-mentioned lixiviate or drain.
4) for the superiority of the method is described, replace Tea Polyphenols solution, the identical control treatment of doing of other condition with deionized water.Testing result sees Table 1
Each component content of table 1 tea sample (in butt)
Embodiment 2,
1) instant tea powder solution preparation: be lower than 0.5% instant tea powder with caffeine content, be mixed with mass fraction and be 15% the instant tea powder aqueous solution.
2) caffein-free: the dried green tea of 0.5Kg fried green is put into the above-mentioned instant tea powder solution of 10L, treatment conditions, 95 ℃ of temperature, time 7min, centrifugation or drain the back and take out tealeaves.Leach
Can reuse in the solution,, after lignocellulosic or macroporous resin chromatography are deviate from caffeine, can recycle when the content of caffeine wherein during greater than 3.0mg/ml.
3) with the tealeaves centrifugal dehydration after the lixiviate, at-0.98MPa, dry under 60 ℃ low caffeine tea.
4) for the superiority of the method is described, replace low caffeine instant tea powder solution, the identical control treatment of doing of other condition with deionized water.Testing result sees Table 2
Each component content of table 2 tea sample (in butt)
Embodiment 3,
1) Tea Polyphenols solution preparation: be lower than 1.0% with caffeine content, purity is mixed with the Tea Polyphenols solution of mass fraction 15% greater than 95% Tea Polyphenols.
2) the 0.5Kg roasted green tea is put into the above-mentioned instant tea powder solution of 10L, treatment conditions are 100 ℃ of temperature, time 5min.
3) with the tealeaves centrifugal dehydration after the lixiviate, at-0.98Mpa, dry under 60 ℃ low caffeine tea.
4) handle tealeaves after solution can reuse, when the content of caffeine wherein during, after lignocellulosic or macroporous resin chromatography are deviate from caffeine, can recycle greater than 3.0mg/ml.
5) solution after the processing is 9.5L, to wherein putting into the 0.45Kg roasted green tea, under 100 ℃, handles 7min.
6) take out the tealeaves centrifugal dehydration, at-0.98Mpa, dry under 60 ℃ low caffeine tea 2.Testing result sees Table 3.
Each component content of table 3 tea sample (in butt)
Claims (3)
1. the preparation method of a low caffeine tealeaves is characterized in that: this method is to remove caffeine in fresh tea passes or the stem tea with Tea Polyphenols or low caffeine instant tea powder aqueous solution extraction, and its step is as follows:
(1) Tea Polyphenols or instant tea powder solution preparation
Less than 1.0% Tea Polyphenols or instant tea powder, add water preparation mass fraction and be 2%～20% Tea Polyphenols or instant tea powder solution with low caffeine content;
(2) complete and caffein-free
Bright leaf of tea or stem tea are put into above-mentioned Tea Polyphenols or instant tea powder solution, and processing requirements is: 90 ℃～100 ℃ of temperature, time 2min～15min, and bright leaf of tea and above-mentioned solution weight volume ratio are 1: 4～1: 8, dipping completes, caffein-free; Stem tea and above-mentioned solution weight volume ratio are 1: 10～1: 20, dipping, caffein-free;
(3) dewatered drying
Take out the tealeaves after the lixiviate centrifugal or drain dehydration, oven dry, make with extra care low caffeine tea.
2. the preparation method of low caffeine tealeaves according to claim 1 is characterized in that: when caffeine content is greater than 3mg/ml in Tea Polyphenols or the instant tea powder solution, recycle after removing wherein caffeine with lignocellulosic or macroporous resin chromatography.
3. the preparation method of low caffeine tealeaves according to claim 1 is characterized in that: the process conditions of dewatered drying are: vacuum for-0.08Mpa～-0.1Mpa, temperature is below 60 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110082792 CN102178012B (en) | 2011-03-31 | 2011-03-31 | Method for preparing low-caffeine tea leaves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110082792 CN102178012B (en) | 2011-03-31 | 2011-03-31 | Method for preparing low-caffeine tea leaves |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102178012A true CN102178012A (en) | 2011-09-14 |
| CN102178012B CN102178012B (en) | 2013-08-21 |
Family
ID=44564428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110082792 Active CN102178012B (en) | 2011-03-31 | 2011-03-31 | Method for preparing low-caffeine tea leaves |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102178012B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102771614A (en) * | 2012-08-10 | 2012-11-14 | 福建农林大学 | Processing technology of black tea with low caffeine |
| CN107183263A (en) * | 2017-06-26 | 2017-09-22 | 俞惠英 | A kind of green tea powder and preparation method thereof |
| CN107319079A (en) * | 2017-08-10 | 2017-11-07 | 安徽省天旭茶业有限公司 | The preparation method of the low packed pulverizing tea of caffeine fruity |
| CN107518113A (en) * | 2017-08-10 | 2017-12-29 | 安徽省天旭茶业有限公司 | The low packed pulverizing tea of caffeine fruity |
| CN110292162A (en) * | 2019-07-10 | 2019-10-01 | 江西省蚕桑茶叶研究所(江西省经济作物研究所) | A kind of low caffeine super fine tea powder jam and preparation method thereof |
| US10426178B2 (en) | 2014-03-26 | 2019-10-01 | Infré Sa | Decaffeination methods and systems |
| CN112889949A (en) * | 2021-03-16 | 2021-06-04 | 信阳市文新茶叶有限责任公司 | Manufacturing process of Xinyang Maojian tea |
| CN112956551A (en) * | 2021-03-16 | 2021-06-15 | 信阳市文新茶叶有限责任公司 | Old tea processing method |
| CN115428849A (en) * | 2022-10-21 | 2022-12-06 | 泉州汇乐贸易有限公司 | Tea processing method with low caffeine content |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001245591A (en) * | 2000-03-07 | 2001-09-11 | Saitama Prefecture | Granule of green tea essence with reduced amount of caffeine |
| JP2004222682A (en) * | 2003-01-27 | 2004-08-12 | Bio Oriented Technol Res Advancement Inst | Anti-allergic component-containing functional beverage or food obtained from low caffeine-containing tea leaf |
| CN1911061A (en) * | 2006-08-29 | 2007-02-14 | 浙江大学 | Method for producing instant tea power contg. low content of caffeine and crude caffeine product by using fresh tea tree leaves |
| CN101189991A (en) * | 2006-11-20 | 2008-06-04 | 尹福生 | Preparation method of low-caffeine green tea |
-
2011
- 2011-03-31 CN CN 201110082792 patent/CN102178012B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001245591A (en) * | 2000-03-07 | 2001-09-11 | Saitama Prefecture | Granule of green tea essence with reduced amount of caffeine |
| JP2004222682A (en) * | 2003-01-27 | 2004-08-12 | Bio Oriented Technol Res Advancement Inst | Anti-allergic component-containing functional beverage or food obtained from low caffeine-containing tea leaf |
| CN1911061A (en) * | 2006-08-29 | 2007-02-14 | 浙江大学 | Method for producing instant tea power contg. low content of caffeine and crude caffeine product by using fresh tea tree leaves |
| CN101189991A (en) * | 2006-11-20 | 2008-06-04 | 尹福生 | Preparation method of low-caffeine green tea |
Non-Patent Citations (3)
| Title |
|---|
| 严赞开等: "凤凰茶中咖啡因的脱除工艺", 《食品科技》, vol. 35, no. 6, 20 June 2010 (2010-06-20), pages 126 - 128 * |
| 吴小崇: "热水浸提法生产低咖啡因绿茶", 《中国茶叶》, no. 2, 15 April 1994 (1994-04-15), pages 2 - 3 * |
| 许勇泉等: "茶叶脱咖啡因技术研究进展", 《茶叶科学》, vol. 28, no. 1, 15 February 2008 (2008-02-15), pages 1 - 8 * |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102771614A (en) * | 2012-08-10 | 2012-11-14 | 福建农林大学 | Processing technology of black tea with low caffeine |
| US10426178B2 (en) | 2014-03-26 | 2019-10-01 | Infré Sa | Decaffeination methods and systems |
| EP3122191B1 (en) * | 2014-03-26 | 2020-12-09 | Infré S.A. | Decaffeination methods and systems |
| US11083207B2 (en) | 2014-03-26 | 2021-08-10 | Infré Sa | Decaffeination methods and systems |
| CN107183263A (en) * | 2017-06-26 | 2017-09-22 | 俞惠英 | A kind of green tea powder and preparation method thereof |
| CN107319079A (en) * | 2017-08-10 | 2017-11-07 | 安徽省天旭茶业有限公司 | The preparation method of the low packed pulverizing tea of caffeine fruity |
| CN107518113A (en) * | 2017-08-10 | 2017-12-29 | 安徽省天旭茶业有限公司 | The low packed pulverizing tea of caffeine fruity |
| CN110292162A (en) * | 2019-07-10 | 2019-10-01 | 江西省蚕桑茶叶研究所(江西省经济作物研究所) | A kind of low caffeine super fine tea powder jam and preparation method thereof |
| CN112889949A (en) * | 2021-03-16 | 2021-06-04 | 信阳市文新茶叶有限责任公司 | Manufacturing process of Xinyang Maojian tea |
| CN112956551A (en) * | 2021-03-16 | 2021-06-15 | 信阳市文新茶叶有限责任公司 | Old tea processing method |
| CN115428849A (en) * | 2022-10-21 | 2022-12-06 | 泉州汇乐贸易有限公司 | Tea processing method with low caffeine content |
| CN115428849B (en) * | 2022-10-21 | 2023-10-20 | 泉州汇乐贸易有限公司 | Tea processing method with low caffeine content |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102178012B (en) | 2013-08-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102178012B (en) | Method for preparing low-caffeine tea leaves | |
| CN103013650B (en) | Process for preparing sesame oil | |
| CN101189991A (en) | Preparation method of low-caffeine green tea | |
| CN103030993A (en) | Process method for extracting coreopsis tinctoria nutt food colorant | |
| CN101914097A (en) | Technological method for extracting caffeine and tea polyphenol mixture from tea step by step | |
| CN102972557A (en) | Method for producing instant tea powder by using steam explosion technology to treat tea raw materials | |
| CN103952232B (en) | The method of Rice pollard oil is extracted in a kind of rice bran | |
| CN102228101B (en) | Method for preparing selenium-enriched healthy tea with high tea polyphenol and theanine | |
| CN103766531B (en) | Prepare the method for high gamma-aminobutyric acid instant tea | |
| CN102696783A (en) | Walnut oil and processing method thereof | |
| CN101467576A (en) | Method for processing instant green tea powder | |
| CN103666933A (en) | Golden camellia fermentation wine making method | |
| CN102875508A (en) | Process for extracting flavonoids of lotus leaves | |
| CN102120790B (en) | Methods for preparing high-hydrophilcity macroporous absorption resin and removing caffeine in crude tea extracts | |
| CN105950277B (en) | A kind of mountain almond oil extraction refinery practice | |
| CN110423292A (en) | It is a kind of to continue to exceed filtering method for what inulin extracted | |
| CN106690320B (en) | Preparation method of high-purity tea polyphenol | |
| CN108740089A (en) | A kind of preparation method of black tea | |
| CN102885178B (en) | Cordyceps militaris instant tea and preparation method thereof | |
| CN105878518A (en) | Separation and purification method of litchi polyphenol | |
| CN108142590A (en) | A kind of black tea processing method | |
| CN103704422B (en) | Method for preparing and extracting theabrownin by using tea leaves as raw material | |
| CN105614761A (en) | Kelp deep-processing method | |
| CN105412258B (en) | method for extracting tartary buckwheat flavone extract and tartary buckwheat wine obtained by same | |
| CN107361180A (en) | A kind of Mulberry leaf deodorizing takes away the puckery taste handling process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151102 Address after: 100020, No. 22 Guanghua Road, Beijing, 13, unit 2, 1611, Chaoyang District Patentee after: Huayuan Leasing Company Limited Address before: 564100 No. 2, green food industrial park, Meitan County, Guizhou Province Patentee before: Zunyi Lusheng Health-Source & Technology Development Co., Ltd. |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151221 Address after: 564100 green food industrial park, Meitan County, Guizhou, Zunyi Patentee after: Zunyi Lusheng Health-Source & Technology Development Co., Ltd. Address before: 100020, No. 22 Guanghua Road, Beijing, 13, unit 2, 1611, Chaoyang District Patentee before: Huayuan Leasing Company Limited |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20220104 Address after: 563000 floor 2, Lu Shengkangyuan office building, No. 12, Xieyu Road, Meijiang street, Meitan County, Zunyi City, Guizhou Province Patentee after: Guizhou Zunyi Quanxing Tea Co.,Ltd. Address before: Meitan Green Food Industrial Park Patentee before: ZUNYI LUSHENG HEALTH-SOURCE & TECHNOLOGY DEVELOPMENT Co.,Ltd. |
|
| TR01 | Transfer of patent right |