CN101971901A - Method for preparing high-tea-polyphenol instant tea - Google Patents
Method for preparing high-tea-polyphenol instant tea Download PDFInfo
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- CN101971901A CN101971901A CN 201010542626 CN201010542626A CN101971901A CN 101971901 A CN101971901 A CN 101971901A CN 201010542626 CN201010542626 CN 201010542626 CN 201010542626 A CN201010542626 A CN 201010542626A CN 101971901 A CN101971901 A CN 101971901A
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- tea
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- drying
- tea polyphenols
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- 235000020344 instant tea Nutrition 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 20
- 235000013616 tea Nutrition 0.000 claims abstract description 61
- 150000008442 polyphenolic compounds Chemical class 0.000 claims abstract description 49
- 235000013824 polyphenols Nutrition 0.000 claims abstract description 49
- 244000269722 Thea sinensis Species 0.000 claims abstract description 34
- 239000007788 liquid Substances 0.000 claims abstract description 25
- 239000012528 membrane Substances 0.000 claims abstract description 18
- 238000000605 extraction Methods 0.000 claims abstract description 10
- 235000009569 green tea Nutrition 0.000 claims abstract description 10
- 238000005374 membrane filtration Methods 0.000 claims abstract description 9
- 238000000926 separation method Methods 0.000 claims abstract description 6
- 238000001694 spray drying Methods 0.000 claims abstract description 5
- 238000004108 freeze drying Methods 0.000 claims abstract description 3
- 239000002994 raw material Substances 0.000 claims abstract description 3
- 239000012530 fluid Substances 0.000 claims description 15
- 239000012141 concentrate Substances 0.000 claims description 14
- 238000002360 preparation method Methods 0.000 claims description 14
- 235000008504 concentrate Nutrition 0.000 claims description 13
- 238000001035 drying Methods 0.000 claims description 12
- 239000000284 extract Substances 0.000 claims description 11
- 238000001914 filtration Methods 0.000 claims description 8
- 235000006468 Thea sinensis Nutrition 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 235000020333 oolong tea Nutrition 0.000 claims description 6
- 238000001223 reverse osmosis Methods 0.000 claims description 6
- 238000005352 clarification Methods 0.000 claims description 4
- 239000002893 slag Substances 0.000 claims description 4
- 230000006837 decompression Effects 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 2
- 235000014666 liquid concentrate Nutrition 0.000 claims description 2
- -1 membrane filtration Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 9
- 238000005119 centrifugation Methods 0.000 abstract 1
- 238000009776 industrial production Methods 0.000 abstract 1
- RYYVLZVUVIJVGH-UHFFFAOYSA-N caffeine Chemical compound CN1C(=O)N(C)C(=O)C2=C1N=CN2C RYYVLZVUVIJVGH-UHFFFAOYSA-N 0.000 description 14
- 238000005516 engineering process Methods 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 7
- LPHGQDQBBGAPDZ-UHFFFAOYSA-N Isocaffeine Natural products CN1C(=O)N(C)C(=O)C2=C1N(C)C=N2 LPHGQDQBBGAPDZ-UHFFFAOYSA-N 0.000 description 7
- 229960001948 caffeine Drugs 0.000 description 7
- VJEONQKOZGKCAK-UHFFFAOYSA-N caffeine Natural products CN1C(=O)N(C)C(=O)C2=C1C=CN2C VJEONQKOZGKCAK-UHFFFAOYSA-N 0.000 description 7
- 239000011347 resin Substances 0.000 description 7
- 229920005989 resin Polymers 0.000 description 7
- 150000004676 glycans Chemical class 0.000 description 6
- 229920001282 polysaccharide Polymers 0.000 description 6
- 239000005017 polysaccharide Substances 0.000 description 6
- 238000001179 sorption measurement Methods 0.000 description 5
- 238000000108 ultra-filtration Methods 0.000 description 4
- 239000000706 filtrate Substances 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000005377 adsorption chromatography Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000009777 vacuum freeze-drying Methods 0.000 description 2
- 238000003809 water extraction Methods 0.000 description 2
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
Landscapes
- Tea And Coffee (AREA)
- Medicines Containing Plant Substances (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a processing technique for preparing a high-tea-polyphenol instant tea. The instant green tea, which can be completely dissolved in water and of which the tea polyphenol content is more than 75 percent, is prepared from tea leaves serving as a raw material by extraction, dreg-liquid separation, centrifugation, membrane filtration, membrane separation, concentration and spray drying or freeze drying. The method for preparing the tea has a simple process, and is easy to implement and suitable for industrial production.
Description
Technical field
The present invention relates to a kind of preparation method of tea, particularly a kind of preparation method of high Tea Polyphenols instant tea.
Background technology
Instant tea is generally used flooding tealeaves, after filtration or centrifugal, concentrate and drying is made, can be water-soluble fast, do not have tea grounds and keep the pressed powder of the peculiar taste of tealeaves, instant-drink also can be used as the supplementary material of food and drink.Adopt conventional processing method, polyphenol content is relatively low in the instant tea of gained, normally can not surpass 65%, and the employing film separates, and can Tea Polyphenols be separated, thereby obtains the instant tea of high Tea Polyphenols.Because Tea Polyphenols is an active component important in the tealeaves, there is certain demand the domestic and international market to the high Tea Polyphenols instant tea that does not use solvent to handle in producing, and demand can be increasing.
In the existing technology, have and use milipore filter to filter clarification tea extract or concentrate in the production of instant tea, thereby obtain the technology of high clarity instant tea; The technology of using reverse osmosis membrane to concentrate tea extract is arranged, do not find the application of in production of instant tea, using specific film to improve the polyphenol content in the instant tea.The technology of using film to filter or concentrate is arranged in Tea Polyphenols production.Publication number is the manufacturing process that the Chinese patent application of CN1154798 discloses a kind of instant tea, this technology is to realize like this, tealeaves is put into cold distilled water to be soaked, through coarse filtration and smart filter, after separating its supernatant, after concentrating with the RO membrane technology again, carry out vacuum freeze drying again, promptly get a kind of instant tea.The main characteristics of the manufacturing process of this instant tea be still keep former tealeaves the health care pharmacologically active that had of intrinsic color and its main component.This method is to use film to filter and concentrated tea liquid, does not use film to separate the content that improves Tea Polyphenols in the instant tea.Publication number is that the Chinese patent application of CN101508690 discloses a kind of new method of extracting Tea Polyphenols, tea polysaccharide, caffeine from tealeaves simultaneously; Step comprises: enzymolysis and extraction, and ultrafiltration, resin adsorption Tea Polyphenols, caffeine, wash-out obtain caffeine and Tea Polyphenols, and counter-infiltration obtains tea polysaccharide.This invention be with enzymolysis and extraction, film separate, resin adsorption organically combines, need not any organic solvent (containing ethanol) interior, only with water sedimentation, wash-out.It also is filtration that this method is used film, is to use resin adsorption to improve the purity of Tea Polyphenols.Publication number is that the Chinese patent application of CN1973652 discloses a kind of method of extracting Tea Polyphenols from tealeaves, with the tea juice of pulverizing tea behind water extraction, successively through the film coarse filtration, the film ultrafiltration, membrane reverse osmosis concentrate carry dense, pass through nonpolar macroporous adsorption resin, ethanolic solution wash-out, the Tea Polyphenols solution that obtains purifying again; This solution is adsorbed by cellulose adsorbent again, remove caffeine, with Different concentrations of alcohol solution gradient wash-out, concentrate and reclaim ethanol, drying gets the Tea Polyphenols product.This method also is to use film to filter clarification tea liquid and concentrates, and is to use macroporous resin adsorption purification Tea Polyphenols, does not but use film to separate the content that improves Tea Polyphenols.Publication number is that the Chinese patent application of CN1699586 discloses a kind of Tea Polyphenols that extracts, the production technology of by-product caffeine and tea polysaccharide from tealeaves.Production technology is as follows successively: (A) adopt the active ingredients such as Tea Polyphenols, caffeine and tea polysaccharide in complex enzyme hydrolysis extraction and the water extraction tealeaves; (B) extract is through ultrafiltration membrance filter; (C) the film concentrate through precipitation with alcohol get thick polysaccharide, take off albumen after again through precipitation with alcohol, dry tea polysaccharide; (D) film sees through liquid through the separation and purification of second resin adsorption chromatography, produces Tea Polyphenols by-product caffeine.This method is to use film ultrafiltration tea liquid, uses the film concentrated extracting solution, uses the separation and purification of second resin adsorption chromatography, does not also use specific film to improve the content or the purity of Tea Polyphenols.
Summary of the invention
The present invention is for avoiding above-mentioned existing in prior technology weak point, a kind of preparation method of instant tea of high Tea Polyphenols being provided.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of preparation method of high Tea Polyphenols instant tea, with tealeaves is raw material, comprise extraction, the separation of slag liquid, membrane filtration, concentrate, drying steps, it is characterized in that: the clarification tea extract after handling through membrane filtration is carried out film earlier separate, the trapped fluid that separates of collection membrane and see through liquid respectively, then to the trapped fluid after separating with see through that liquid concentrates respectively, drying, described trapped fluid promptly gets high Tea Polyphenols instant tea after concentrated, drying; The described liquid that sees through promptly gets after concentrated, drying and hangs down the Tea Polyphenols instant tea.
It is that 20000～50000 daltonian films separate that described film separates the employing molecular cut off.
The amount that described extraction adds entry is 5～25 times of tealeaves weight, and extraction time is 1～3 time, each 10 minutes～100 minutes.
Described slag liquid separating method is centrifugal or strainer filtering.
Membrane filtration is hollow-fibre membrane or ceramic membrane filter.
Described method for concentration is reverse osmosis membrane concentration method or vacuum decompression concentration method, and the concentrate concentration of gained is 10～50 ° of Brix.
Described drying means is spray drying process or freeze-drying.
Described tealeaves is the mixture of any one or two kinds of green tea, oolong tea.
Compared with the prior art, beneficial effect of the present invention is embodied in:
1, the present invention is the tea extract of 20000～50000 daltonian membrane filtration separating clarifyings by using molecular cut off, Tea Polyphenols in the tea extract is separated, most Tea Polyphenols can't see through diffusion barrier, thereby obtain the trapped fluid of diffusion barrier and see through liquid, polyphenol content in the trapped fluid is significantly higher than through the polyphenol content in the liquid, concentrate respectively to trapped fluid with by liquid again, thereby obtain polyphenol content respectively greater than 75% instant tea and the low instant tea of polyphenol content.
2 preparation methods' of the present invention technology is simple, and is easy to operate, is suitable for industrialized production.
The specific embodiment
Below in conjunction with specific embodiment, further illustrate the present invention, should understand these embodiment only is used to the present invention is described and is not used in and limit the scope of the invention, after having read the present invention, those skilled in the art all fall within the application's claims institute restricted portion to the modification of the various equivalent form of values of the present invention.
Embodiment 1:
Get green tea 200kg, pulverize, the water that adds 1000kg, under 70 ℃ of conditions, extracted 100 minutes, remove tea grounds with strainer filtering then, obtain green tea extractive liquor, centrifugal with disk centrifugal separator, be 100000 membrane filtrations with molecular cut off again, obtain clarifying bright filtrate, above-mentioned film is seen through liquid separate, obtain the liquid that sees through of trapped fluid that the solid matter percentage composition is 4.2 ° of Brix and 2.3 ° of Brix, with above-mentioned trapped fluid with see through liquid to carry out reverse osmosis membrane respectively concentrated with 20000 daltonian milipore filters, carry out spray-drying at last respectively, obtaining the 12.1kg polyphenol content and be 75.2% instant green tea and 9.8kg polyphenol content is 22.8 instant green teas.
Embodiment 2:
Get broken oolong tea 200kg, the water that adds 5000kg, under 90 ℃ of conditions, extract 3 times each 10 minutes, use 3000Kg water the 1st time, the water of the 2nd 1000kg, the 3rd water with 1000kg, remove tea grounds with strainer filtering, merge and obtain the oolong tea extract, use disk centrifugal separator centrifugal then, be the ceramic membrane filter of 0.2 μ again with the aperture, obtain clarifying bright filtrate, above-mentioned ceramic membrane is seen through liquid separate, obtain the liquid that sees through of trapped fluid that the solid matter percentage composition is 2.3 ° of Brix and 1.6 ° of Brix, with above-mentioned trapped fluid with see through liquid to carry out reverse osmosis membrane respectively concentrated with 50000 daltonian milipore filters, carry out vacuum freeze drying at last respectively, obtain the 29.1kg polyphenol content and be 77.8% instant oolong tea and 26.3kg polyphenol content and be 32.7% instant oolong tea.
Embodiment 3:
Get broken green tea 100kg, 100 kilograms of broken oolongs, mix, the water that adds 3000kg, under 80 ℃ of conditions, extracted 50 minutes, remove tea grounds with horizontal spiral centrifuge, obtain tea extract, the ceramic membrane filter of 0.5 μ again, the filtrate that obtains clarifying sees through liquid with above-mentioned ceramic membrane and separates with 30000 daltonian milipore filters, obtain the liquid that sees through of trapped fluid that the solid matter percentage composition is 3.0 ° of Brix and 2.1 ° of Brix, with above-mentioned trapped fluid with see through liquid and carry out dense vacuum decompression respectively and concentrate, carry out spray-drying at last respectively, obtain the 26.5kg polyphenol content and be 77.8% instant green tea and 21.3kg polyphenol content and be 33.0% instant green tea.
Claims (8)
1. the preparation method of a high Tea Polyphenols instant tea, with tealeaves is raw material, comprise extraction, the separation of slag liquid, membrane filtration, concentrate, drying steps, it is characterized in that: the clarification tea extract after handling through membrane filtration is carried out film earlier separate, the trapped fluid that separates of collection membrane and see through liquid respectively, then to the trapped fluid after separating with see through that liquid concentrates respectively, drying, described trapped fluid promptly gets high Tea Polyphenols instant tea after concentrated, drying; The described liquid that sees through promptly gets after concentrated, drying and hangs down the Tea Polyphenols instant tea.
2. the preparation method of instant tea according to claim 1 is characterized in that: described film separates that to adopt molecular cut off be that 20000～50000 daltonian films separate.
3. according to the preparation method of claim 2 or 3 described a kind of high Tea Polyphenols instant tea, it is characterized in that: the amount that described extraction adds entry is 5～25 times of tealeaves weight, and extraction time is 1～3 time, each 10 minutes～100 minutes.
4. the preparation method of a kind of high Tea Polyphenols instant tea according to claim 1 is characterized in that: described slag liquid separating method is centrifugal or strainer filtering.
5. the preparation method of a kind of high Tea Polyphenols instant tea according to claim 1 is characterized in that: membrane filtration is hollow-fibre membrane or ceramic membrane filter.
6. the preparation method of a kind of high Tea Polyphenols instant tea according to claim 1 is characterized in that: described method for concentration is reverse osmosis membrane concentration method or vacuum decompression concentration method, and the concentrate concentration of gained is 10～50 ° of Brix.
7. the preparation method of a kind of high Tea Polyphenols instant tea according to claim 1 is characterized in that: described drying means is spray drying process or freeze-drying.
8. according to the preparation method of above-mentioned any described a kind of high Tea Polyphenols instant tea of claim, it is characterized in that: described tealeaves is the mixture of any one or two kinds of green tea, oolong tea.
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| CN 201010542626 CN101971901B (en) | 2010-11-12 | 2010-11-12 | Method for preparing high-tea-polyphenol instant tea |
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| CN 201010542626 CN101971901B (en) | 2010-11-12 | 2010-11-12 | Method for preparing high-tea-polyphenol instant tea |
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Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102204611A (en) * | 2011-03-31 | 2011-10-05 | 遵义陆圣康源科技开发有限责任公司 | Liquid beverage containing organic high-concentration tea polyphenol |
| CN102342338A (en) * | 2011-07-01 | 2012-02-08 | 广东正源华茶生物工程有限公司 | Method for separating and preparing instant tea by use of multilayer membranes |
| CN102362621A (en) * | 2011-07-01 | 2012-02-29 | 广东正源华茶生物工程有限公司 | Method for preparing instant tea through extraction by using supercritical carbon dioxide and separation by using multilayer membrane |
| CN102715307A (en) * | 2012-06-26 | 2012-10-10 | 南京融点食品科技有限公司 | Instant yellow tea preparation method |
| CN102919429A (en) * | 2012-10-29 | 2013-02-13 | 吴浩 | Primary taste instant black tea powder as well as preparation method and application thereof |
| CN103054126A (en) * | 2012-12-25 | 2013-04-24 | 浙江惠松制药有限公司 | Preparation method of chrysanthemum morifolium instant drink |
| CN103652081A (en) * | 2013-12-11 | 2014-03-26 | 贵州和泰春茶叶科技有限公司 | Preparation method of instant green tea |
| CN103768130A (en) * | 2014-01-08 | 2014-05-07 | 合肥康龄养生科技有限公司 | Extraction method of phyllanthus emblica polyphenol |
| CN103815078A (en) * | 2014-02-26 | 2014-05-28 | 成都华高生物制品有限公司 | Method for extracting low-caffeine low-content tea polyphenol from fresh tea |
| CN103833795A (en) * | 2014-02-26 | 2014-06-04 | 成都华高生物制品有限公司 | Method for extracting low-content tea polyphenol from fresh tea leaves |
| CN104206576A (en) * | 2014-08-14 | 2014-12-17 | 中国农业科学院茶叶研究所 | Preparation method of tea polyphenol-rich instant tea powder |
| CN104543150A (en) * | 2015-01-23 | 2015-04-29 | 安徽农业大学 | Preparation method of low-fluorine instant tea powder |
| CN104770507A (en) * | 2015-04-17 | 2015-07-15 | 福建师范大学 | Method for concentrating tealeaf extract by using wide-runner high-temperature-resistant reverse osmosis membrane |
| CN104782829A (en) * | 2015-04-22 | 2015-07-22 | 西华大学 | Cold soluble type instant green tea and preparation method thereof |
| CN105494765A (en) * | 2016-01-11 | 2016-04-20 | 福建省农业科学院茶叶研究所 | Instant tea and preparing method thereof |
| CN106035809A (en) * | 2016-06-24 | 2016-10-26 | 贵州凤冈雨生万物农业科技发展有限公司 | Processing method for instant green tea powder |
| CN106561894A (en) * | 2016-11-10 | 2017-04-19 | 婺源县聚芳永茶业有限公司 | Preparation method of high-tea-polyphenol-content instant green tea powder and instant green tea powder |
| CN106857898A (en) * | 2017-02-21 | 2017-06-20 | 中国科学院华南植物园 | A kind of method for being made homoamino acid, polyphenol high and high-quality slender joss stick gas instant tea powder using low-quality tea tree's old leaf |
| CN107125371A (en) * | 2017-06-05 | 2017-09-05 | 南京融点食品科技有限公司 | A kind of tealeaves high efficiency extraction and the technique utilized |
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| CN102204611A (en) * | 2011-03-31 | 2011-10-05 | 遵义陆圣康源科技开发有限责任公司 | Liquid beverage containing organic high-concentration tea polyphenol |
| CN102342338A (en) * | 2011-07-01 | 2012-02-08 | 广东正源华茶生物工程有限公司 | Method for separating and preparing instant tea by use of multilayer membranes |
| CN102362621A (en) * | 2011-07-01 | 2012-02-29 | 广东正源华茶生物工程有限公司 | Method for preparing instant tea through extraction by using supercritical carbon dioxide and separation by using multilayer membrane |
| CN102362621B (en) * | 2011-07-01 | 2013-08-21 | 广东正源华茶生物工程有限公司 | Method for preparing instant tea through extraction by using supercritical carbon dioxide and separation by using multilayer membrane |
| CN102715307B (en) * | 2012-06-26 | 2013-08-07 | 南京融点食品科技有限公司 | Instant yellow tea preparation method |
| CN102715307A (en) * | 2012-06-26 | 2012-10-10 | 南京融点食品科技有限公司 | Instant yellow tea preparation method |
| CN102919429B (en) * | 2012-10-29 | 2014-01-01 | 吴浩 | Primary taste instant black tea powder as well as preparation method and application thereof |
| CN102919429A (en) * | 2012-10-29 | 2013-02-13 | 吴浩 | Primary taste instant black tea powder as well as preparation method and application thereof |
| CN103054126A (en) * | 2012-12-25 | 2013-04-24 | 浙江惠松制药有限公司 | Preparation method of chrysanthemum morifolium instant drink |
| CN103652081B (en) * | 2013-12-11 | 2015-10-28 | 贵州和泰春茶叶科技有限公司 | A kind of preparation method of instant green tea |
| CN103652081A (en) * | 2013-12-11 | 2014-03-26 | 贵州和泰春茶叶科技有限公司 | Preparation method of instant green tea |
| CN103768130A (en) * | 2014-01-08 | 2014-05-07 | 合肥康龄养生科技有限公司 | Extraction method of phyllanthus emblica polyphenol |
| CN103815078A (en) * | 2014-02-26 | 2014-05-28 | 成都华高生物制品有限公司 | Method for extracting low-caffeine low-content tea polyphenol from fresh tea |
| CN103833795A (en) * | 2014-02-26 | 2014-06-04 | 成都华高生物制品有限公司 | Method for extracting low-content tea polyphenol from fresh tea leaves |
| CN103833795B (en) * | 2014-02-26 | 2016-04-27 | 成都华高生物制品有限公司 | A kind of method extracting low levels tea-polyphenol from fresh tea leaf in its |
| CN103815078B (en) * | 2014-02-26 | 2015-11-11 | 成都华高生物制品有限公司 | A kind of method extracting low-caffeine low content Tea Polyphenols from fresh tea leaf in its |
| CN104206576B (en) * | 2014-08-14 | 2016-08-24 | 中国农业科学院茶叶研究所 | A kind of preparation method of the instant tea powder being enriched with tea polyphenols |
| CN104206576A (en) * | 2014-08-14 | 2014-12-17 | 中国农业科学院茶叶研究所 | Preparation method of tea polyphenol-rich instant tea powder |
| CN104543150A (en) * | 2015-01-23 | 2015-04-29 | 安徽农业大学 | Preparation method of low-fluorine instant tea powder |
| CN104543150B (en) * | 2015-01-23 | 2017-07-18 | 安徽农业大学 | A kind of preparation method of low fluorine instant tea powder |
| CN104770507A (en) * | 2015-04-17 | 2015-07-15 | 福建师范大学 | Method for concentrating tealeaf extract by using wide-runner high-temperature-resistant reverse osmosis membrane |
| CN104782829A (en) * | 2015-04-22 | 2015-07-22 | 西华大学 | Cold soluble type instant green tea and preparation method thereof |
| CN105494765A (en) * | 2016-01-11 | 2016-04-20 | 福建省农业科学院茶叶研究所 | Instant tea and preparing method thereof |
| CN106035809A (en) * | 2016-06-24 | 2016-10-26 | 贵州凤冈雨生万物农业科技发展有限公司 | Processing method for instant green tea powder |
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