CN102318714A - Method for preparing decaffeinated instant tea powder by using condensed tannic acid - Google Patents
Method for preparing decaffeinated instant tea powder by using condensed tannic acid Download PDFInfo
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- CN102318714A CN102318714A CN 201110220716 CN201110220716A CN102318714A CN 102318714 A CN102318714 A CN 102318714A CN 201110220716 CN201110220716 CN 201110220716 CN 201110220716 A CN201110220716 A CN 201110220716A CN 102318714 A CN102318714 A CN 102318714A
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Abstract
The invention discloses a method for preparing decaffeinated instant tea powder by using condensed tannic acid. The method comprises the following steps of: adjusting pH value of ultra-filtered and purified tea by using food-grade NaOH, and separating out mixed solution of protein, pectin and tea polysaccharide in the tea in the absence of oxygen by using an ultra-filtration membrane; adding a condensed tannic acid solution into the tea, and separating out the tea by using the ultra-filtration membrane after rough filtration; regulating the pH value of the ultra-filtration membrane separated mixed solution of protein, pectin and tea polysaccharide by using food-grade HCl, filtering the mixed solution by using the ultra-filtration membrane, merging the intercepted solution and the tea, concentrating the intercepted solution and the tea together by using a reverse osmosis membrane, drying, and thus obtaining the decaffeinated instant tea powder. By inspection, the decaffeinated instant tea powder does not contain any organic solvent residue, the content of caffeine is less than 0.3 percent, the content of tea polyphenol is more than 20.55 percent; the color of the powder, the color of the aqueous solution, the aroma and the flavor of the decaffeinated instant tea powder are as same as those of common instant tea powder; and the method is low in production equipment investment and good in product quality, and totally meets the requirements of foreign markets for quality and cost of the decaffeinated instant tea powder.
Description
Technical field
The invention belongs to solid beverage manufacturing technology field, concrete is the method that the decaffeination instant tea powder is produced in a kind of condensed tannin acid.
Background technology
Mainly contain active ingredients such as Tea Polyphenols class, Tea Pigment, tea polysaccharide, tea albumen and theanine in the tealeaves.So far, mainly contained by the medical treatment of the tea that modern science confirmed, health-care efficacy: antitumor, anti-sudden change, anti-ageing, antifatigue, radioresistance, anti-carious tooth, eliminate that heavy metallic poison, metabolism adjusting and physiology are regulated, beauty treatment, suppress harmful microorganism, enhance memory and improve cerebral function etc.Yet, containing alkaloid components such as caffeine in the tealeaves again, high dose is taken in caffeine can be stimulated nervous centralis, influence sleep, increase blood pressure, improve illness rate, the mutagenesis of rheumatoid arthritis and cause baby's premature labor etc.Content of caffeine is generally 6%～10% in the existing common instant tea powder.Because caffeine is more harm than good to human body, so the decaffeination instant tea powder enjoys consumer's favor.At present, the domestic and international market is to the major requirement of decaffeination instant tea powder:
1, the content of caffeine in the decaffeination instant tea powder is lower than 0.4%.
2, any harmful organic solvent residual must not be arranged in the decaffeination instant tea powder, that is must not use any organic solvent in the instant tea powder decaffeination process.
3, the decaffeination instant tea powder keeps all components except that caffeine in the common instant tea powder.
4, decaffeination instant tea powder ash content and common instant tea powder ash content are roughly the same.
5, the decaffeination instant tea powder is compared with common instant tea powder, and its aqueous solution clarity is as good as.
6, the decaffeination instant tea powder is compared with common instant tea powder, and its powder color and luster and aqueous solution color and luster thereof all are as good as.
7, the decaffeination instant tea powder is compared with common instant tea powder, and its local flavor is except that the flavour that no longer includes caffeine, and all the other are as good as.
Because the decaffeination instant tea powder has vast market prospect, the colleges and universities of numerous domestic, tealeaves research institute (institute), manufacturer etc. competitively organize the scientific worker to carry out removing caffeine Study on Technology in the instant tea powder.What up to the present, successively propose has " water removes caffeine ", " organic solvent extraction removes caffeine ", " the precipitation by metallic ion method removes caffeine ", " a supercritical CO
2Extraction removes caffeine ", " adsorbing separation removes caffeine ", " microbes for degrading caffeine ", " enzymic degradation caffeine " and a series of technical methods that remove caffeine in the instant tea powder such as " cultivation low-caffeine tree plants ".But; These remove the technical method of caffeine in the instant tea powder; Or because of the end product residual harmful substance or because of the process equipment costliness and production cost is too high or because of the content of caffeine that can't make end product is lower than 0.4% or the like, all can not satisfy quality requirement or the cost requirement of domestic and international market to the decaffeination instant tea powder.
Summary of the invention
The object of the present invention is to provide a kind of powder color and luster, aqueous solution color and luster and fragrance, local flavor that can either keep common instant tea powder; Again can the effective elimination caffeine; And do not have any organic solvent residual, the method for decaffeination instant tea powder is produced in the condensed tannin acid that production cost is low.
Its technical scheme is: the method for decaffeination instant tea powder is produced in a kind of condensed tannin acid, it is characterized in that its processing step:
(1) common instant tea powder is pressed 1: after the part by weight of 50-300 drops into and dissolves in 50 ℃～70 ℃ pure water; Make the tea of purified treatment through the 100000Da ultrafiltration; NaOH transfers to pH8～pH11 with food-grade, isolates protein, pectin and tea polysaccharide mixed liquor with the 10000Da milipore filter under the oxygen free condition;
(2) with isolating the tea after protein, pectin and the tea polysaccharide mixed liquor with the 10000Da milipore filter in the step (1); HCL transfers to pH4～pH7 with food-grade; Normal temperature add down account for tea contain admittedly thing 10%～30%, concentration is 10%～30% condensed tannin acid solution; After coarse filtration; Separate complex compound and tea with the 10000Da milipore filter: its trapped fluid is the complex compound mixed liquor of caffeine, metal ion and tannic acid, sees through liquid and separates with the 1000Da milipore filter, and the 1000Da ultrafiltration membrane permeate liquid both had been a low-caffeine tea concentrate;
(3) step (1) is isolated protein, pectin and tea polysaccharide mixed liquor after the tea; HCL transfers to pH4～pH7 with food-grade; With the 2500Da ultrafiltration membrance filter, discard through liquid, trapped fluid is incorporated in the low-caffeine tea concentrate of step (2) acquisition; It is dry to concentrate the back with reverse osmosis membrane together, promptly gets the decaffeination instant tea powder.
Its technique effect is: the present invention adopts condensed tannin acid to produce the decaffeination instant tea powder, outside employed auxiliary material dewater, has only condensed tannin acid, NaOH, HCL.Wherein condensed tannin acid is the water extract of fruit, and final condensed tannin acid is removed from decaffeination tea; NaOH, HCL are food grade accessory ingredients, and the NaCL that the reaction back generates is removed in the process of tea decaffeination, so gained decaffeination instant tea powder does not contain any organic solvent residual.Product is the check of biology medicine company research and development centre through Wuhu: content of caffeine is lower than 0.3%, and polyphenol content is greater than 20.55%, and powder color and luster, aqueous solution color and luster and fragrance, local flavor and common instant tea powder are as good as; And the equipment investment of producing the decaffeination instant tea powder is low, and production cost is low, good product quality, and economic benefit is high, satisfies quality requirement and the cost requirement of overseas market to the decaffeination instant tea powder fully.
The specific embodiment
The method of decaffeination instant tea powder is produced in a kind of condensed tannin acid, is undertaken by following processing step:
(1) gets common instant tea powder 5kg (polyphenol content 40%, content of caffeine 7.5%), add 120kg50 ℃～70 ℃ dissolved in purified water.Get 30 ℃ of tea solution 125kg after the dissolving.Tea after purified treatment is made in the 100000Da ultrafiltration, NaOH transfers to pH10 with food-grade, isolates protein, pectin, the tea polysaccharide mixed liquor 25kg of 4% concentration under the oxygen free condition with the 10000Da milipore filter, after the separation the tea 200kg of 2% concentration;
(2) step (1) milipore filter is separated the tea of gained 2% concentration afterwards; HCL transfers to pH5.5 with food-grade; Be concentrated into concentration 4% with reverse osmosis membrane; Normal temperature adds 20% concentration condensed tannin acid (condensed tannin acid system water from fruit extracts and obtains) solution 5kg down, makes caffeine in the tea, metal ion and tannic acid complexing.After block complex compound is fallen in the mixed liquor coarse filtration of tea and condensed tannin acid solution; Separate complex compound and tea with the 10000Da milipore filter: the complex compound mixed liquor 30kg that its milipore filter trapped fluid is caffeine, metal ion and tannic acid; Seeing through liquid separates with the 1000Da milipore filter again; 1000Da ultrafiltration membrane permeate liquid water concentrates with reverse osmosis membrane, gets 20% concentration low-caffeine tea concentrate 15kg;
(3) step (1) is isolated protein, pectin, tea polysaccharide mixed liquor after the tea, HCL transfers to pH5.5 with food-grade, with the 2500Da ultrafiltration membrance filter; Discard and see through liquid; Incorporate in the 20% concentration low-caffeine tea concentrate of step (2) acquisition after the dialysis of trapped fluid pure water, it is dry to concentrate the back with reverse osmosis membrane together, promptly gets decaffeination instant tea powder 4kg; Yield is 80%, content of caffeine＜0.3%.
(4) with the trapped fluid that separates with the 10000Da milipore filter in the step (2); Be the complex compound mixed liquor of caffeine, metal ion and tannic acid, NaOH transfers to pH10 with food-grade, and is heated to 65 ℃; Then be cooled to 35 ℃, separate tannic acid and caffeine with the 1000Da milipore filter.See through liquid (containing caffeine) and discard, trapped fluid (containing condensed tannin acid) is concentrated into 20% concentration and adds food-grade HCL and transfers to PH4, gets reusable condensed tannin acid solution.
Claims (2)
1. the method for decaffeination instant tea powder is produced in a condensed tannin acid, it is characterized in that its processing step:
(1) common instant tea powder is pressed 1: after the part by weight of 50-300 drops into and dissolves in 50 ℃～70 ℃ pure water; Make the tea of purified treatment through the 100000Da ultrafiltration; NaOH transfers to pH8～pH11 with food-grade, isolates protein, pectin and tea polysaccharide mixed liquor with the 10000Da milipore filter under the oxygen free condition;
(2) with isolating the tea after protein, pectin and the tea polysaccharide mixed liquor with the 10000Da milipore filter in the step (1); HCL transfers to pH4～pH7 with food-grade; Normal temperature add down account for tea contain admittedly thing 10%～30%, concentration is 10%～30% condensed tannin acid solution; After coarse filtration; Separate complex compound and tea with the 10000Da milipore filter: its trapped fluid is the complex compound mixed liquor of caffeine, metal ion and tannic acid, sees through liquid and separates with the 1000Da milipore filter, and the 1000Da ultrafiltration membrane permeate liquid both had been a low-caffeine tea concentrate;
(3) step (1) is isolated protein, pectin and tea polysaccharide mixed liquor after the tea; HCL transfers to pH4～pH7 with food-grade; With the 2500Da ultrafiltration membrance filter, discard through liquid, trapped fluid is incorporated in the low-caffeine tea concentrate of step (2) acquisition; It is dry to concentrate the back with reverse osmosis membrane together, promptly gets the decaffeination instant tea powder.
2. the method for decaffeination instant tea powder is produced in a kind of condensed tannin acid according to claim 1; It is characterized in that: the trapped fluid that separates with the 10000Da milipore filter in the said step (2); Be the complex compound mixed liquor of caffeine, metal ion and tannic acid, NaOH transfers to pH8～pH11 with food-grade, and is heated to 50 ℃～70 ℃; Then be cooled to 20 ℃～40 ℃; The trapped fluid that separates with the 1000Da milipore filter is through being concentrated into 10%～30% concentration, and adds food-grade HCL and transfer to pH4～pH7, reusable condensed tannin acid solution.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108740169A (en) * | 2018-07-16 | 2018-11-06 | 云南茶农生物产业有限责任公司 | A kind of low-caffeine protects fragrant instant tea powder and preparation method thereof |
| CN109170068A (en) * | 2018-07-16 | 2019-01-11 | 云南茶农生物产业有限责任公司 | A kind of method of UF membrane removing caffeine |
| CN109251252A (en) * | 2018-07-25 | 2019-01-22 | 云南茶农生物产业有限责任公司 | A kind of technique that membrane separation technique combines cooling precipitation method to prepare tea polysaccharide, tea polyphenols, caffeine and theanine |
| CN109259297A (en) * | 2018-09-25 | 2019-01-25 | 云南中烟工业有限责任公司 | A kind of coffee toasts fragrant electronics tobacco tar and its preparation method and application |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1726792A (en) * | 2005-07-25 | 2006-02-01 | 美晨集团股份有限公司 | Technique for removing caffeine in tea through supercritical carbon dioxide extraction method |
| CN101785517A (en) * | 2010-03-08 | 2010-07-28 | 贵州泰博生物科技有限责任公司 | Production process of decaffeination tea |
-
2011
- 2011-08-03 CN CN 201110220716 patent/CN102318714B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1726792A (en) * | 2005-07-25 | 2006-02-01 | 美晨集团股份有限公司 | Technique for removing caffeine in tea through supercritical carbon dioxide extraction method |
| CN101785517A (en) * | 2010-03-08 | 2010-07-28 | 贵州泰博生物科技有限责任公司 | Production process of decaffeination tea |
Non-Patent Citations (4)
| Title |
|---|
| 《中国茶叶加工》 20091231 朱跃进等 超临界CO_2脱咖啡因绿茶加工对茶内含成分影响的研究 第19-23页 1-2 , 第02期 * |
| 《江苏食品与发酵》 19990930 陈海霞等 茶多酚中脱咖啡因方法的研究 第13-14页 1-2 , 第03期 * |
| 《科技促进发展（应用版）》 20101231 郁军 茶多酚的提取纯化工艺研究进展 第50-51页 1-2 , 第10期 * |
| 《茶叶科学》 20081231 许勇泉等 茶叶脱咖啡因技术研究进展 第1-8页 1-2 第28卷, 第01期 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108740169A (en) * | 2018-07-16 | 2018-11-06 | 云南茶农生物产业有限责任公司 | A kind of low-caffeine protects fragrant instant tea powder and preparation method thereof |
| CN109170068A (en) * | 2018-07-16 | 2019-01-11 | 云南茶农生物产业有限责任公司 | A kind of method of UF membrane removing caffeine |
| CN109251252A (en) * | 2018-07-25 | 2019-01-22 | 云南茶农生物产业有限责任公司 | A kind of technique that membrane separation technique combines cooling precipitation method to prepare tea polysaccharide, tea polyphenols, caffeine and theanine |
| CN109259297A (en) * | 2018-09-25 | 2019-01-25 | 云南中烟工业有限责任公司 | A kind of coffee toasts fragrant electronics tobacco tar and its preparation method and application |
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| CN102318714B (en) | 2013-04-17 |
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