CN104206576A - Preparation method of tea polyphenol-rich instant tea powder - Google Patents
Preparation method of tea polyphenol-rich instant tea powder Download PDFInfo
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Abstract
A preparation method of tea polyphenol-rich instant tea powder belongs to the technical field of tea processing. An ultrasonic multistage countercurrent extraction column is used to extract according to the leaching characteristics of effective components of tea leaf and is formed by an extraction column, the extraction column comprises an upper filter screen, a lower filter screen and an ultrasonic oscillator arranged between the upper filter screen and the lower filter screen, the extraction temperature and the extraction time are controlled in I segment, II segment and III segment during the extraction by the ultrasonic multistage countercurrent extraction column, the leaching proportions of flavor components are organically coordinated, I segment extraction liquid and II segment extraction liquid are collected, and undergo coarse filtration, fine filtration and drying to obtain high-quality cold-soluble instant tea powder, and III segment extraction liquid is collected, and undergoes coarse filtration, fine filtration, concentration and drying to obtain the tea polyphenol-rich instant tea powder. The preparation method makes the tea polyphenol-rich instant tea powder rich in tea polyphenols and full of natural flavor of original tea.
Description
Technical field
The invention belongs to Tea Processing technical field, be specifically related to a kind of preparation method of instant tea powder of enrichment Tea Polyphenols.
Background technology
Instant tea has the feature such as brew conveniently, healthy, convenient, along with the quickening of people's rhythm of life develops rapidly, is widely used among varieties of food items, beverage and daily articles for use.Tea Polyphenols is one of main function composition in instant tea powder, has anti-oxidant, reducing blood lipid, removing free radical, radioresistance, antitumor and improve the biologically actives such as comprehensive immunity and pharmacological effect.
At present, in instant tea or tea concentrate production technology, polyphenol content is generally less than 55%, high Tea Polyphenols (content the is greater than 70%) instant tea of the separated system of conventional certain films is because the molecular size range of taste composition differs, taste compound and active component in can not synchronous coordination tea juice, pained highly seasoned, mouthfeel is poor.The processing methods such as the existing ion precipitation method of Tea Polyphenols, solvent extraction, supercritical extraction (SPE) and absorption method, there is the residual security of reagent, production cost is too high or be unfavorable for the shortcomings such as suitability for industrialized production, outer interpolation Tea Polyphenols can improve the production cost of instant tea, high bitter taste and security risks.
Therefore, be necessary to invent a kind of enrichment Tea Polyphenols, fully demonstrate again the instant tea environment-friendly preparation method thereof of natural former tea local flavor.
Summary of the invention
The problem existing for prior art, the object of the invention is to design provides a kind of technical scheme of preparation method of instant tea powder of enrichment Tea Polyphenols, in the instant tea powder preparing by the present invention, polyphenol content is higher than 65%, and has low bitterness, has former tea local flavor.
The preparation method of the instant tea powder of described a kind of enrichment Tea Polyphenols, it is characterized in that the leaching characteristic according to effective content of tea, utilize the extraction of ultrasonic wave multi-stage countercurrent extraction column, described ultrasonic wave multi-stage countercurrent extraction column extraction consists of extraction column, described extraction column comprises upper and lower filter and is arranged on the ultrasonic oscillator between upper and lower filter, ultrasonic wave multi-stage countercurrent extraction column extraction time-division I section, II section and III section are controlled extraction temperature and time, organic coordination taste composition leaches ratio, collect I section, II section extract is through coarse filtration, essence is filtered and is dried and obtains high-quality cold cut instant tea powder, collect III section through coarse filtration, essence filter, concentrated and the dry instant tea powder that obtains enrichment Tea Polyphenols,
Wherein I section extraction temperature is 30-50 ℃, and the time is 5-10 minute; II section extraction temperature is 40-60 ℃, and the time is 15-30 minute; The extraction of III section is 50-70 ℃, time 20-40 minute.
The preparation method of the instant tea powder of described a kind of enrichment Tea Polyphenols, is characterized in that described ultrasonic wave multi-stage countercurrent extraction column props up extraction column by 2-4 in series, and it is 20-60kg that single extraction column is thrown tea amount.
The preparation method of the instant tea powder of described a kind of enrichment Tea Polyphenols, is characterized in that described ultrasonic oscillator is 4-10 group, every group of power 1-3KW, and flow pump is controlled water inlet 180-600L/h.
The preparation method of the instant tea powder of described a kind of enrichment Tea Polyphenols, is characterized in that described I section extraction temperature is 35-45 ℃, and the time is 5-10 minute; II section extraction temperature is 45-55 ℃, and the time is 15-30 minute; The extraction of III section is 55-65 ℃, time 20-40 minute.
The preparation method of the instant tea powder of described a kind of enrichment Tea Polyphenols, it is characterized in that the extract of collecting I section, II section is after the filter screen coarse filtration of extraction column top setting, after 100K-300K Doulton milipore filter or tubular type centrifugal clarification, frozen drying makes high-quality cold cut instant tea powder.
The preparation method of the instant tea powder of described a kind of enrichment Tea Polyphenols, it is characterized in that the extract of collecting III section is after the filter screen coarse filtration of extraction column top setting, separated through 0.1um-0.3um micro-filtration or 200K-300K Doulton milipore filter, see through the instant tea powder that is rich in Tea Polyphenols that liquid spraying after nanofiltration is concentrated is dried system.
The preparation method of the instant tea powder of described a kind of enrichment Tea Polyphenols, is characterized in that the aperture of described filter screen is 100-500 order.
The preparation method of the instant tea powder of described a kind of enrichment Tea Polyphenols, is characterized in that described tealeaves is any one or a few mixing in roasted green tea, baked green tea, steaming green tea, large leaf green tea and Iron Guanyin.
Compared with prior art, the present invention has following beneficial effect:
1) by ultrasonic wave adverse current multistage column, extract tealeaves, effectively improve millet paste concentration and active ingredient leaching rate, protection millet paste fragrance and quality, reduce the generation of energy consumption and waste water;
2) according to the leaching characteristic of various active ingredients in tealeaves, extraction temperature and time are combined in segmentation, effectively improve the eurythmy of taste components, improve tea juice quality, particularly in the 3rd section of extract, are rich in highly active Tea Polyphenols;
3) realize millet paste serialization preparation and concentration and increase progressively, and extraction column top is furnished with filter screen, save time and energy consumption;
4) a whole set of technology green, energy-saving and environmental protection, the comprehensive utilization ratio of active ingredient in raising tealeaves.
The specific embodiment
Below in conjunction with embodiment, further illustrate the present invention.
Embodiment 1:
40 order roasted green teas are carried out to far infrared Titian: 90 ℃, 8min;
Ultrasonic wave multi-stage countercurrent extraction column is in series by 3 post extraction columns, and extraction column consists of upper and lower filter and the ultrasonic vibrator that is arranged between upper and lower filter, and every extraction column drops into above-mentioned tealeaves 20kg;
Open 6 groups of ultrasonic vibrators in every extraction column in ultrasonic wave multi-stage countercurrent extraction column, every group of power 2KW, the reverse extraction column that enters of pure water, flow velocity 360L/h;
Divide three sections of extractions: 35 ℃ of I sections, 8 minutes time; 48 ℃ of II sections, 30 minutes time; 55 ℃ of III sections, 30 minutes;
Collect the extract (16Brix) of above-mentioned I, II section after upper filter screen (100 orders and the 500 orders) coarse filtration on extraction column top, through 200K Doulton PES material ultrafiltration membrance filter (30 ℃ of temperature), the high-quality cold cut instant tea powder of making after frozen drying;
Collect the extract of above-mentioned III section after upper filter screen (100 orders and the 500 orders) coarse filtration on extraction column top, cross 0.2um micro-filtration;
Above-mentioned micro-filtration is seen through to liquid and through nanofiltration, be concentrated into 18Brix, the instant green tea powder that is rich in Tea Polyphenols of the dry system of spraying.
It is high that instant tea powder prepared by the present invention and the instant tea powder of existing common process relatively have polyphenol content, the feature that product are of fine quality, in Table 1:
Table 1: the present invention and the comparison of existing processing technology product quality
。
Embodiment 2:
20 order Iron Guanyins are carried out to far infrared Titian: 90 ℃, 10min;
Ultrasonic wave multi-stage countercurrent extraction column is in series by 2 post extraction columns, and extraction column consists of upper and lower filter and the ultrasonic vibrator that is arranged between upper and lower filter, and every extraction column drops into above-mentioned tealeaves 25kg;
Open 8 groups of ultrasonic vibrators in every extraction column in ultrasonic wave multi-stage countercurrent extraction column, every group of power 2.6KW, the reverse extraction column that enters of pure water, flow velocity 320L/h;
Divide three sections of extractions: 35 ℃ of I sections, 6 minutes time; 50 ℃ of II sections, 25 minutes time; 60 ℃ of III sections, 40 minutes;
Collect the extract (15Brix) of above-mentioned I, II section after upper filter screen (100 orders and the 500 orders) coarse filtration on extraction column top, through tubular type centrifugal clarification, the high-quality cold cut instant tea powder of making after frozen drying;
Collect the extract of above-mentioned III section after upper filter screen (100 orders and the 500 orders) coarse filtration on extraction column top, cross 0.2um micro-filtration;
Above-mentioned micro-filtration is seen through to liquid and through nanofiltration, be concentrated into 20Brix, the instant oolong tea powder that is rich in Tea Polyphenols of the dry system of spraying.
The present invention preparation have save time, energy-conservation, the feature such as extraction concentration is high, and quality is good, in Table 2:
Table 2: the present invention and the comparison of existing handicraft product quality
?。
Embodiment 3:
60 order steaming green teas are carried out to far infrared Titian: 100 ℃, 5min;
Ultrasonic wave multi-stage countercurrent extraction column is in series by 4 post extraction columns, and extraction column consists of upper and lower filter and the ultrasonic vibrator that is arranged between upper and lower filter, and every post drops into above-mentioned tealeaves 22kg;
Open 8 groups of ultrasonic vibrators of every extraction column in ultrasonic wave multi-stage countercurrent extraction column, every group of power 2.5KW, the reverse extraction column that enters of pure water, flow velocity 400L/h;
Divide three sections of extractions: 30 ℃ of I sections, 10 minutes time; 45 ℃ of II sections, 30 minutes time; 70 ℃ of III sections, 20 minutes;
Collect the extract (13Brix) of above-mentioned I, II section after upper filter screen (100 orders and the 500 orders) coarse filtration on extraction column top, through 200K Doulton PES material ultrafiltration membrance filter (30 ℃ of temperature), filling one-tenth high-quality green tea concentrate after UHT sterilizing;
Collect the extract of above-mentioned III section after upper filter screen (100 orders and the 500 orders) coarse filtration on extraction column top, cross 300K Doulton PES material milipore filter, collect and see through liquid;
Above-mentionedly see through liquid nanofiltration and be concentrated into 16Brix, the instant green tea powder that is rich in Tea Polyphenols of the dry system of spraying.
Embodiment 4:
60 order steaming green teas are carried out to far infrared Titian: 100 ℃, 5min;
Ultrasonic wave multi-stage countercurrent extraction column is in series by 4 post extraction columns, and extraction column consists of upper and lower filter and the ultrasonic vibrator that is arranged between upper and lower filter, and every post drops into above-mentioned tealeaves 40kg;
Open 8 groups of ultrasonic vibrators of every extraction column in ultrasonic wave multi-stage countercurrent extraction column, every group of power 1KW, the reverse extraction column that enters of pure water, flow velocity 500L/h;
Divide three sections of extractions: 50 ℃ of I sections, 5 minutes time; 40 ℃ of II sections, 10 minutes time; 60 ℃ of III sections, 25 minutes;
Collect the extract (13Brix) of above-mentioned I, II section after upper filter screen (100 orders and the 500 orders) coarse filtration on extraction column top, through 200K Doulton PES material ultrafiltration membrance filter (30 ℃ of temperature), filling one-tenth high-quality green tea concentrate after UHT sterilizing;
Collect the extract of above-mentioned III section after upper filter screen (100 orders and the 500 orders) coarse filtration on extraction column top, cross 300K Doulton PES material milipore filter, collect and see through liquid;
Above-mentionedly see through liquid nanofiltration and be concentrated into 16Brix, the instant green tea powder that is rich in Tea Polyphenols of the dry system of spraying.
It is high that instant tea powder prepared by the present invention and existing high polyphenol instant tea technique relatively have polyphenol content, and fragrance is aobvious, mouthfeel is without advantages such as bitter tastes, in Table 3:
Table 3: the present invention and the comparison of existing handicraft product quality
。
Embodiment 5:
20 order Iron Guanyins are carried out to far infrared Titian: 90 ℃, 10min;
Ultrasonic wave multi-stage countercurrent extraction column is in series by 2 post extraction columns, and extraction column consists of upper and lower filter and the ultrasonic vibrator that is arranged between upper and lower filter, and every post drops into above-mentioned tealeaves 30kg;
Open 8 groups of ultrasonic vibrators of every extraction column in ultrasonic wave multi-stage countercurrent extraction column, every group of power 2.2KW, the reverse extraction column that enters of pure water, flow velocity 180L/h;
Divide three sections of extractions: 40 ℃ of I sections, 5 minutes time; 60 ℃ of II sections, 30 minutes time; 50 ℃ of III sections, 20 minutes;
Collect the extract (15Brix) of above-mentioned I, II section after upper filter screen (100 orders and the 500 orders) coarse filtration on extraction column top, through tubular type centrifugal clarification, the high-quality cold cut instant tea powder of making after frozen drying;
Collect the extract of above-mentioned III section after upper filter screen (100 orders and the 500 orders) coarse filtration on extraction column top, cross 0.2um micro-filtration;
Above-mentioned micro-filtration is seen through to liquid and through nanofiltration, be concentrated into 20Brix, the instant oolong tea powder that is rich in Tea Polyphenols of the dry system of spraying.
Claims (8)
1. the preparation method of the instant tea powder of an enrichment Tea Polyphenols, it is characterized in that the leaching characteristic according to effective content of tea, utilize the extraction of ultrasonic wave multi-stage countercurrent extraction column, described ultrasonic wave multi-stage countercurrent extraction column extraction consists of extraction column, described extraction column comprises upper and lower filter and is arranged on the ultrasonic oscillator between upper and lower filter, ultrasonic wave multi-stage countercurrent extraction column extraction time-division I section, II section and III section are controlled extraction temperature and time, organic coordination taste composition leaches ratio, collect I section, II section extract is through coarse filtration, essence is filtered and is dried and obtains high-quality cold cut instant tea powder, collect III section through coarse filtration, essence filter, concentrated and the dry instant tea powder that obtains enrichment Tea Polyphenols,
Wherein I section extraction temperature is 30-50 ℃, and the time is 5-10 minute; II section extraction temperature is 40-60 ℃, and the time is 15-30 minute; The extraction of III section is 50-70 ℃, time 20-40 minute.
2. the preparation method of the instant tea powder of a kind of enrichment Tea Polyphenols as claimed in claim 1, is characterized in that described ultrasonic wave multi-stage countercurrent extraction column props up extraction column by 2-4 in series, and it is 20-60kg that single extraction column is thrown tea amount.
3. the preparation method of the instant tea powder of a kind of enrichment Tea Polyphenols as claimed in claim 1, is characterized in that described ultrasonic oscillator is 4-10 group, every group of power 1-3KW, and flow pump is controlled water inlet 180-600L/h.
4. the preparation method of the instant tea powder of a kind of enrichment Tea Polyphenols as claimed in claim 1, is characterized in that described I section extraction temperature is 35-45 ℃, and the time is 5-10 minute; II section extraction temperature is 45-55 ℃, and the time is 15-30 minute; The extraction of III section is 55-65 ℃, time 20-40 minute.
5. the preparation method of the instant tea powder of a kind of enrichment Tea Polyphenols as described in claim 1 or 4, it is characterized in that the extract of collecting I section, II section is after the filter screen coarse filtration of extraction column top setting, after 100K-300K Doulton milipore filter or tubular type centrifugal clarification, frozen drying makes high-quality cold cut instant tea powder.
6. the preparation method of the instant tea powder of a kind of enrichment Tea Polyphenols as described in claim 1 or 4, it is characterized in that the extract of collecting III section is after the filter screen coarse filtration of extraction column top setting, separated through 0.1um-0.3um micro-filtration or 200K-300K Doulton milipore filter, see through the instant tea powder that is rich in Tea Polyphenols that liquid spraying after nanofiltration is concentrated is dried system.
7. the preparation method of the instant tea powder of a kind of enrichment Tea Polyphenols as claimed in claim 1, is characterized in that the aperture of described filter screen is 100-500 order.
8. the preparation method of the instant tea powder of a kind of enrichment Tea Polyphenols as claimed in claim 1, is characterized in that described tealeaves is any one or a few mixing in roasted green tea, baked green tea, steaming green tea, large leaf green tea and Iron Guanyin.
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CN104605057A (en) * | 2015-02-12 | 2015-05-13 | 华祥苑茶业股份有限公司 | Tea-fragrant gas drink and production process thereof |
CN105145964A (en) * | 2015-09-29 | 2015-12-16 | 华南师范大学 | High-aroma instant tea and preparation method thereof |
CN105533003A (en) * | 2015-12-16 | 2016-05-04 | 镇江市丹徒区茗缘茶叶专业合作社 | Instant flower tea powder preparation method and prepared instant flower tea powder |
CN106234712A (en) * | 2016-09-05 | 2016-12-21 | 广东分子态生物股份有限公司 | A kind of freely assorted instant alternative tea and preparation method thereof |
CN107242330A (en) * | 2017-06-16 | 2017-10-13 | 中国农业科学院茶叶研究所 | A kind of preparation method of tea juice |
CN109007149A (en) * | 2017-06-11 | 2018-12-18 | 刘子元 | A kind of preparation method for the instant tea powder being enriched with tea polyphenols |
CN113712096A (en) * | 2021-08-30 | 2021-11-30 | 福建农林大学 | Preparation method of mellow original-taste instant oolong tea |
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CN104605057A (en) * | 2015-02-12 | 2015-05-13 | 华祥苑茶业股份有限公司 | Tea-fragrant gas drink and production process thereof |
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CN113712096A (en) * | 2021-08-30 | 2021-11-30 | 福建农林大学 | Preparation method of mellow original-taste instant oolong tea |
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