CN102919424A - Pu'er raw tea extract for effectively retaining quality of original tea and preparation method and application of same - Google Patents
Pu'er raw tea extract for effectively retaining quality of original tea and preparation method and application of same Download PDFInfo
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Abstract
The invention discloses a pu'er raw tea extract for effectively retaining quality of original tea and a preparation method and an application of same. The pu'er raw tea extract comprises tea polyphenol, caffeine, tea polysaccharide, amino acids, and an aroma component. The mass percents of the components are respectively as follows: 25-69% of tea polyphenol, 8-20% of caffeine, 10-30% of tea polysaccharide, 5-23% of amino acids, and 0.01-0.1% of aroma component. The sum of mass percents of the component is not greater than 100%. The preparation method comprises the steps of: tea digestion, cooling and clarification, primary concentration, second concentration and low temperature drying. The pu'er tea extract is applied to instant tea beverages, tobacco or foods. Oxidation and loss of main thermosensitive substances such as aroma and taste are reduced by middle- and low-temperature digestion, constant temperature film concentration and low temperature drying technologies and the like. The preparation method is simple, and the aqueous solution of the extract has a scent and is strong in aroma, smooth to drink, sweet and liquid-engendering, and red and bright in liquor color. The pu'er raw tea extract is similar to the original pu'er tea in tea liquid scent, taste and liquor color.
Description
Technical field
The invention belongs to field of deep tea processing technology, be specifically related to the Pu'er raw tea extract and preparation method thereof and application of the former tea quality of a kind of effective reservation.
Background technology
Tea culture is with a long history in China, and is of long standing and well established.Tea is daily drink, relieves summer heat and quenches one's thirst, and has more health-care efficacy.The traditional Chinese medical science is thought, but refresh oneself on the tealeaves, but in promoting digestion to eliminate stagnation, but lower diuresis is natural health beverages, more and more becomes indispensable indispensable good merchantable brand in people's life.
Pu'er tea belongs to black tea, because of the place of production old genus Yunnan Pu Erfu (modern Puer City), therefore gain the name, that the distinctive large leaf solar dried green tea in Yunnan is raw material, suppress afterwards by fermentation the ripe tea that is that forms, the tea of making a living of elder generation's steam pressure after fermentation, giving birth to tea need to be through just going out bitterness behind the sweat more than a year, and hair tonic goes out strong tea fragrance.Said Pu'er cooked tea is the Pu'er tea that the artificial pile-fermentation method of Yunnan in 1974 and the invention of Guangdong tealeaves company is made.The Pu'er tea of indication generally is Pu'er raw tea in history, and the Pu'er tea of indication generally refers to Pu'er cooked tea now.Because Pu'er raw tea is through natural alcoholization, compare artificial Pu'er cooked tea have tea aromatic strongly fragrant, entrance is smooth, return sweet characteristics of promoting the production of body fluid, but also has casted away the corruption flavor of artificial ripe tea.Pu'er tea is with a long history, and is bright. thank start system " Yunnan is slightly. volume three " carry: " soil is multitudinous used, and all general tea also.That steams is agglomerating." this is that " general tea " one is seen in literal first.Clearly. Zhao Xuemin supplementary Amplifications of the Compendium of Materia Medica cloud: " Pu'er tea bitter quarter, separate greasy cattle and sheep poison, bitterness, by gas under the phlegm, sharp intestines are logical to rush down ".The reputation that " cosmetic tea " arranged." more Chen Yuexiang " is acknowledged as the maximum characteristics that Pu'er tea is distinguished other teas, and " the blue gas of fragrant old nine land measure of 30 mus virtue, product are Pu'er feelings in thousand to the greatest extent." Pu'er tea is " but antique of entrance ".
Along with the raising of people's living standard, people have higher requirement with method to tea-drinking.Conventional bag is made tea owing to finally still there being discarded object to exist, and brews inconvenience; Super fine tea powder technique is owing to adopting the method for physics ultramicro grinding, the existence of tea grounds is arranged after brewing and affects and drinks, mostly as food additives.Drinking at present easily, instant tea technique generally adopts low temperature lixiviate in organic solvent extraction and water boiling lixiviate or the water, then the method such as middle high temperature drying, owing to can occuring to interact with organic solvent, the part active component generates new material, thereby affect the mouthfeel of final instant tea, and the organic solvent extraction process costs is high, and the part organic solvent also has toxic and side effect; Water boiling lixiviate and middle high temperature drying technique are because temperature is higher, and the time is longer, make the part active component generation oxidation in the tealeaves, and the aroma substance extraction rate is lower, cause that tea fragrance changes, tea fragrance is lighter and millet paste darkens; Although single middle water at low temperature extracting technology temperature reduces the oxidation that has reduced active component, but because the later stage is concentrated and drying process adopts high-temperature technology in distillation and concentration, vacuum drying or the spray-drying etc., make the thermal sensitivity composition of extract rotten, cause that the instant tea fragrance that obtains is light, a little less than the flavour.The employing supercritical CO is also arranged now
2Fluid extraction Tea Polyphenols modulation instant tea technique, but mostly be in the then scheme of later stage allotment taste formation instant tea such as the single component that extracts Tea Polyphenols, be difficult to reach fragrance and the mouthfeel of former tea; And in order to improve the yield of extract, generally adopt too high extraction temperature and pressure, and often easily causing the destruction of aroma substance, extract has one vegetables flavor that boils.
Show according to lot of experiments and detection, guarantee the fragrance of tea extraction, giving birth to tea extraction volatile aroma oil content must be more than 〉=0.01%, and content ratio is close with former tea between each component, could keep the tea fragrance, undistorted of former tea.Present disclosed Pu'er raw tea extracting method, extract volatile aroma oil content＜0.01%, and also composition is single or the ratio distortion, is to cause the reason that present Pu'er raw tea extract tea perfume (or spice) is weak, flavour is light, the soup look turns black.
Fully and not change flavouring essence quality if can develop the former tea fragrance extraction of a kind of Pu'er raw tea, can fully extract again former tea keeps mouthfeel to human body beneficial's composition Pu'er raw tea processing technology, then have widely market prospects.
Summary of the invention
The first purpose of the present invention is to provide the Pu'er raw tea extract of the former tea quality of a kind of effective reservation, and the second purpose is to provide the preparation method of this extract, and the 3rd purpose is to provide the application of this extract.
The first purpose of the present invention is to realize like this, the Pu'er raw tea extract of the former tea quality of described effective reservation comprises Tea Polyphenols, caffeine, tea polysaccharide, amino acid and aroma component, the shared mass percent of each component is respectively: Tea Polyphenols 25 ~ 69%, caffeine 8 ~ 20%, tea polysaccharide 10 ~ 30%, amino acid 5 ~ 23%, aroma component 0.01 ~ 0.1%, each constituent mass percentage sum is not more than 100%.
Aroma component of the present invention is the volatile aroma oil component, and described active component comprises that the Tea Polyphenols among the present invention, caffeine, tea polysaccharide, amino acid and aroma component are active component to the influential material that fragrance is improved that reaches of mouthfeel.
The second purpose of the present invention is achieved in that described preparation method comprises tealeaves lixiviate, cooling clarification, one-level is concentrated, secondary is concentrated, low temperature drying, is specially:
A, tealeaves lixiviate: raw material tealeaves is sent in the pot for solvent extraction, added extraction water 25 ~ 85 ℃, 5 ~ 15 times of volume ratios, circulation lixiviate 0.1 ~ 3h obtains leaching liquor;
B, cooling are clarified: send into clarifier after leaching liquor is cooled to 10 ~ 40 ℃ and carry out clarifying treatment;
C, one-level are concentrated: will cool off leaching liquor after the clarification and send into and carry out one-level in the membrane separation concentrated compression apparatus and concentrate, and obtain one-level concentrate and parting liquid; The aperture of the diffusion barrier in the membrane separation concentrated compression apparatus≤0.001 μ m;
D, secondary concentrate: the one-level concentrate is sent in the secondary enrichment facility, obtained secondary concentrate and parting liquid;
E, low temperature drying: the secondary concentrate is sent into drying in the low temperature drying device, effectively kept the Pu'er raw tea extract of former tea quality.
The 3rd purpose of the present invention is achieved in that the application of Pu'er raw tea extract in instant tea beverage, tobacco or food of the former tea quality of described effective reservation.
Low temperature lixiviate during the present invention adopts, the normal temperature film is concentrated and the technology such as low temperature drying, greatly reduces oxidation and the loss of the main heat-sensitive substance such as fragrance and flavour, has guaranteed again extracting efficiency.By the concentrated pre-concentration of carrying out of one-level film, then further secondary is concentrated, can guarantee that the composition that aroma component and Tea Polyphenols, polysaccharide compound, caffeine, amino acid etc. affect tea fragrance, flavour is kept to greatest extent, can improve again the concentrated efficient of film.Extract the cycle that temperature, pressure, time and circulation are extracted, concentrated by accurate control, not only help to keep fragrance and the quality of former tea, can also improve recovery rate and the production efficiency of active component, aroma component.Adopt and extract the hydrothermal exchange cooling technology, utilize the waste heat energy after the extraction water that refluxes fully reclaims lixiviate, replenish the consumption of extracting water heat energy, significantly energy savings.The parting liquid that twice enrichment process obtains is as the recycling of extracting water, reduced the loss of residue fragrance component and beneficiating ingredient in the parting liquid.
Description of drawings
Fig. 1 is Pu'er raw tea extract process flow diagram of the present invention.
The specific embodiment
The present invention is further illustrated below in conjunction with drawings and Examples, but never in any form the present invention is limited, and any change or improvement based on training centre of the present invention is done all belong to protection scope of the present invention.
The Pu'er raw tea extract of the former tea quality of effective reservation of the present invention, comprise Tea Polyphenols, caffeine, tea polysaccharide, amino acid and aroma component, the shared mass percent of each component is respectively: Tea Polyphenols 25 ~ 69%, caffeine 8 ~ 20%, tea polysaccharide 10 ~ 30%, amino acid 5 ~ 23%, aroma component 0.01 ~ 0.1%, each constituent mass percentage sum is not more than 100%.
As preferred embodiment:
Described aroma component comprises the linalool that accounts for its mass percent 10 ~ 58% and 2 ~ 19% linalool oxide.
Described linalool oxide comprise the suitable pyranoid form linalool oxide that accounts for aroma component mass percent 1 ~ 8% or/and 2 ~ 10% trans pyranoid form linalool oxide or/and 1 ~ 8% suitable furan type linalool oxide or/and 2 ~ 10% trans furan type linalool oxide.
Described aroma component comprises the alpha-terpineol of the benzyl carbinol that accounts for its mass percent 1.5 ~ 10% and/or 5 ~ 18% and/or 3 ~ 20% geraniol.
As shown in Figure 1, the preparation method of the Pu'er raw tea extract of the former tea quality of effective reservation of the present invention comprises that tealeaves lixiviate, cooling clarification, one-level concentrate, secondary is concentrated, low temperature drying, is specially:
A, tealeaves lixiviate: raw material tealeaves is sent in the pot for solvent extraction, added extraction water 25 ~ 85 ℃, 5 ~ 15 times of volume ratios, circulation lixiviate 0.1 ~ 3h obtains leaching liquor;
B, cooling are clarified: send into clarifier after leaching liquor is cooled to 10 ~ 40 ℃ and carry out clarifying treatment;
C, one-level are concentrated: will cool off leaching liquor after the clarification and send into and carry out one-level in the membrane separation concentrated compression apparatus and concentrate, and obtain one-level concentrate and parting liquid; The aperture of the diffusion barrier in the membrane separation concentrated compression apparatus≤0.001 μ m;
D, secondary concentrate: the one-level concentrate is sent in the secondary enrichment facility, obtained secondary concentrate and parting liquid;
E, low temperature drying: the secondary concentrate is sent into drying in the low temperature drying device, effectively kept the Pu'er raw tea extract of former tea quality.
As preferred embodiment:
During concrete production, usually can reject the preliminary treatment such as impurity, pulverizing or rinsing to raw material tealeaves, also can not process.
Described pot for solvent extraction be common pot for solvent extraction, diacolation type pot for solvent extraction dynamically or the countercurrent leaching tank, or the auxiliary pot for solvent extraction of ultrasonic wave, electromagnetic wave or microwave is arranged; Described cooling is adopted nature cooling, the cooling of electricity refrigeration, the cooling of cool cycles hydrothermal exchange or is extracted the hydrothermal exchange cooling; Described extraction water is distilled water, deionized water or demineralized water, and the parting liquid that obtains when perhaps concentrating with distilled water, deionized water or demineralized water and two-stage is used in combination.
Described extraction hydrothermal exchange is cooled to self-exchange formula cools down, and namely one tunnel thermal medium directly for the cold medium on another road provides heat, raises the temperature of cold medium; Otherwise namely one tunnel the cold medium heat that directly absorbs another road thermal medium lowers the temperature of thermal medium.
Described clarifier perhaps filters the clarifier that clarification combines with centrifugal clarification for filtering clarification or centrifugal clarification device, and described filtration clarification is smart filter, micro-filtration or ultra filtering clarifying.
Described secondary enrichment facility is membrane separation concentration, membrane distillation concentration or low-temperature reduced-pressure enrichment facility, and the membrane aperture in the described membrane separation concentration is≤0.001 μ m, and the membrane aperture in the described membrane distillation concentration is 0.01 ~ 0.5 μ m.
Film in the described membrane separation concentrated compression apparatus is a kind of or any combination in hollow-fibre membrane, tubular membrane, rolled film, Flat Membrane, the butterfly tubular membrane.Film in the described membrane separation concentrated compression apparatus is organic film, ceramic membrane or stainless steel membrane.
Described low temperature drying device is that belt vacuum drying, micro-wave vacuum, vacuum freeze drying, microwave freeze-drying, cryospray are dry, a kind of or any both interlock in the normal temperature dehumidifying drier is used in combination.
The application of Pu'er raw tea extract in instant tea beverage, tobacco or food of the former tea quality of effective reservation of the present invention.
Embodiment 1
Get and drop in the microwave pot for solvent extraction after the 30kg Pu'er raw tea is rejected impurity, the distilled water that adds 15 times of volumes extracts 0.5h under 75 ℃ temperature, separate millet paste and obtain leaching liquor; Leaching liquor is cooled to 25 ℃ through the cool cycles hydrothermal exchange, and the micro-filtrate membrane filtration of via hole diameter 1 μ m obtains clarifying millet paste; The NF membrane concentrating and separating of clarification millet paste via hole diameter 0.001 μ m obtains one-level concentrate and parting liquid; The one-level concentrate is concentrated through 0.001 μ m reverse osmosis membrane, obtain the secondary concentrate of 32.8kg solid content 16.6%; The secondary concentrate is sent into drying in the vacuum freezing drying device, obtain 5.4kg Pu'er raw tea freeze-dry extract.
Determination test: get the Pu'er raw tea extract of embodiment 1 preparation, its fragrance component is measured.Adopt the analytical method of chromatography of gases (GC) and gas chromatography mass spectrometry (GC-MS), the experimental condition that chromatography of gases (GC) is analyzed is as follows:
Instrument: the U.S. HP5890 of Agilent Technologies company II GC; Pillar: the HP-5 quartz capillary column (25m * 0.20mm); Carrier gas: N
2Column temperature: 60 ℃ → 200 ℃ (2min); Heating rate: 3 ℃/min; Split ratio: 50:1; Detect: FID; Sample size: 1 μ L;
The detection of Tea Polyphenols is pressed the ferrous tartrate method of GB/T8313-2008 and is measured; The detection of caffeine is pressed GB/T8312-2002 and is measured; Amino acid whose detection is pressed GB/T8314-2002 and is measured; Sulfuric acid-anthrone method is adopted in the detection of tea polysaccharide.
After the analysis, the mass percent that each component accounts for the Pu'er raw tea extract is: Tea Polyphenols 38.45%, caffeine 15.14%, tea polysaccharide 17.47%, amino acid/11 2.63%, aroma component 0.028%.Wherein, aroma component contains the linalool that accounts for its quality 41.83%, 2.03% linalool oxide, 8.46% benzyl carbinol, 10.3% alpha-terpineol, 19.37% geraniol.Linalool oxide wherein contains the trans furan type linalool oxide that accounts for aroma component quality 1.98%.
Embodiment 2
Pu'er raw tea 15kg is rejected impurity, drop in the ultrasonic-leaching tank after rinsing, the deionized water that adds 5 times of volumes circulates under 25 ℃ temperature and extracts 3h, separates millet paste and obtains leaching liquor; Leaching liquor is cooled to 10 ℃ through electric refrigeration heat converter, obtains clarifying millet paste through centrifugation; Clarification millet paste obtains one-level concentrate and parting liquid through 0.0005 μ m reverse osmosis membrane concentrating and separating; With the membrane distillation concentration of one-level concentrate via hole diameter 0.05 μ m, obtain the secondary concentrate of 14.6kg solid content 21.4%; The secondary concentrate is sent into drying in the belt Minton dryer, obtain 2.85kg Pu'er raw tea extract.
Adopt the detection method among the embodiment 1, to the Pu'er raw tea extract test that makes, its result is: the mass percent that each component accounts for the Pu'er raw tea extract is: Tea Polyphenols 52.94%, caffeine 12.03%, tea polysaccharide 9.96%, amino acid/11 6.38%, aroma component 0.082%.Wherein, aroma component contains the linalool that accounts for its quality 57.95%, 9.32% linalool oxide, 5.14% benzyl carbinol, 5.01% alpha-terpineol, 2.98% geraniol.Linalool oxide wherein contains the cis pyranoid form linalool oxide that accounts for aroma component quality 7.99%, 1.02% cis furan type linalool oxide.
Embodiment 3
To drop in the electromagnetic wave pot for solvent extraction behind the 25kg Pu'er raw tea rejecting impurity, the demineralized water that adds 10 times of volumes circulates under 45 ℃ temperature and extracts 1.5h, separates millet paste and obtains leaching liquor; Leaching liquor is cooled to 30 ℃ through extracting the hydrothermal exchange cooler, and the micro-filtrate membrane filtration of via hole diameter 0.1 μ m obtains clarifying millet paste again; Clarification millet paste obtains one-level concentrate and parting liquid through 0.001 μ m reverse osmosis membrane concentrating and separating; With the membrane distillation concentration of one-level concentrate via hole diameter 0.01 μ m, obtain the secondary concentrate of 18.6kg solid content 22.5%; The secondary concentrate is sent into drying in the microwave freeze-drying device, obtain 4.68kg freeze-drying Pu'er raw tea extract.
Adopt the detection method among the embodiment 1, to the Pu'er raw tea extract test that makes, its result is: the mass percent that each component accounts for the Pu'er raw tea extract is: Tea Polyphenols 68.93%, caffeine 8.02%, tea polysaccharide 12.48%, amino acid 5.01%, aroma component 0.014%.Wherein, aroma component contains the linalool that accounts for its quality 49.71%, 8.85% linalool oxide, 1.51% benzyl carbinol, 12.64% alpha-terpineol, 5.63% geraniol.Linalool oxide wherein contains the cis pyranoid form linalool oxide that accounts for aroma component quality 2.73%, 2.01% trans pyranoid form linalool oxide, 3.65% trans furan type linalool oxide, 4.65% trans furan type linalool oxide.
Embodiment 4
The 30kg Pu'er raw tea is rejected impurity, after rinsing, drop in the ultrasonic wave diacolation type pot for solvent extraction, add the deionized water of 8 times of volumes and parting liquid that the two-stage enrichment process obtains and under 85 ℃ temperature, extract 0.2h, separate millet paste and obtain leaching liquor; Leaching liquor is cooled to 35 ℃ through electricity, and the essence filter membrane filtration of via hole diameter 2 μ m obtains clarifying millet paste; Clarification millet paste obtains one-level concentrate and parting liquid through 0.0005 μ m reverse osmosis membrane concentrating and separating; The one-level concentrate is concentrated through low-temperature reduced-pressure, obtain the secondary concentrate of 18.1kg solid content 23.4%; The secondary concentrate is sent into drying in the microwave vacuum drying device, obtain 5.5kg Pu'er raw tea extract.
Adopt the detection method among the embodiment 1, to the Pu'er raw tea extract test that makes, its result is: the mass percent that each component accounts for the Pu'er raw tea extract is: Tea Polyphenols 43.36%, caffeine 10.73%, tea polysaccharide 29.96%, amino acid 7.24%, aroma component 0.018%.Wherein, aroma component contains the linalool that accounts for its quality 22.87%, 16.82% linalool oxide, 6.74% benzyl carbinol, 16.81% alpha-terpineol, 17.45% geraniol.Linalool oxide wherein contains the trans pyranoid form linalool oxide that accounts for aroma component quality 4.35%, 2.46% cis furan type linalool oxide, 9.97% trans furan type linalool oxide.
Embodiment 5
The 10kg Pu'er raw tea is rejected impurity, and drop in the common pot for solvent extraction after the rinsing, the liquid that sees through that adds that the demineralized water of 12 times of volumes and secondary enrichment process obtain circulate under 65 ℃ temperature and extracts 1h, and separation millet paste obtains leaching liquor; Through naturally cooling to 20 ℃, the ultrafiltration membrance filter of via hole diameter 0.01 μ m obtains clarifying millet paste with leaching liquor; Concentrated one-level concentrate and the parting liquid of obtaining of filter membrane of clarification millet paste via hole diameter 0.001 μ m; The NF membrane of one-level concentrate via hole diameter 0.0001 μ m is concentrated, obtain the secondary concentrate of 17.7kg solid content 12.6%; The secondary concentrate is sent into drying in the nitrogen isolation cryospray drying device, obtain 1.92kg freeze-drying spraying Pu'er raw tea extract.
Adopt the detection method among the embodiment 1, to the Pu'er raw tea extract test that makes, its result is: the mass percent that each component accounts for the Pu'er raw tea extract is: Tea Polyphenols 28.94%, caffeine 20.03%, tea polysaccharide 17.93%, amino acid/11 2.68%, aroma component 0.026%.Wherein, aroma component contains the linalool that accounts for its quality 36.29%, 14.68% linalool oxide, 3.62% benzyl carbinol, 8.71% alpha-terpineol, 13.61% geraniol.Linalool oxide wherein contains the cis pyranoid form linalool oxide that accounts for aroma component quality 1.89%, 5.24% trans pyranoid form linalool oxide, 4.37% cis furan type linalool oxide, 3.18% trans furan type linalool oxide.
Embodiment 6
The 20kg Pu'er raw tea is rejected impurity, pulverize after the rinsing, and after 40 eye mesh screens sieve, drop in the dynamic countercurrent pot for solvent extraction, add the distilled water of 7 times of volumes and the liquid that sees through that the two-stage enrichment process obtains and under 55 ℃ temperature, extract 2h, separate millet paste and obtain leaching liquor; Leaching liquor is naturally cooled to 40 ℃, and filter-cloth filtering and the centrifugation of via hole diameter 10 μ m obtain clarifying millet paste; Clarification millet paste obtains one-level concentrate and parting liquid through 0.0001 μ m reverse osmosis membrane concentrating and separating; With the membrane distillation concentration of one-level concentrate via hole diameter 0.5 μ m, obtain the secondary concentrate of 10.7kg solid content 26.9%; The secondary concentrate is sent in the linkage of normal temperature dehumidifier drying and micro-wave vacuum dryly, obtained 3.81kg Pu'er raw tea extract.
Adopt the detection method among the embodiment 1, to the Pu'er raw tea extract test that makes, its result is: the mass percent that each component accounts for the Pu'er raw tea extract is: Tea Polyphenols 24.97%, caffeine 18.46%, tea polysaccharide 25.18%, amino acid 22.98%, aroma component 0.036%.Wherein, aroma component contains the linalool that accounts for its quality 10.03%, 19.04% linalool oxide, 9.98% benzyl carbinol, 18.05% alpha-terpineol, 19.96% geraniol.Linalool oxide wherein contains the cis pyranoid form linalool oxide that accounts for aroma component quality 1.02%, 9.98% trans pyranoid form linalool oxide, 8.01% cis furan type linalool oxide.
Embodiment 7
Getting the instant Pu'er tea of buying in Pu'er raw tea extract that embodiment 3 makes and market gives birth to tea and carries out the contrast of key odorant composition, result such as following table 1:
Table 1 Pu'er (giving birth to tea) instant tea key odorant composition contrast table (%)
Claims (10)
1. Pu'er raw tea extract that effectively keeps former tea quality, comprise Tea Polyphenols, caffeine, tea polysaccharide, amino acid and aroma component, it is characterized in that the shared mass percent of each component is respectively: Tea Polyphenols 25 ~ 69%, caffeine 8 ~ 20%, tea polysaccharide 10 ~ 30%, amino acid 5 ~ 23%, aroma component 0.01 ~ 0.1%, each constituent mass percentage sum is not more than 100%.
2. the Pu'er raw tea extract of the former tea quality of effective reservation according to claim 1 is characterized in that: described aroma component comprises the linalool that accounts for aroma component mass percent 10 ~ 58% and 2 ~ 19% linalool oxide.
3. the Pu'er raw tea extract of the former tea quality of effective reservation according to claim 2 is characterized in that: described linalool oxide comprise the suitable pyranoid form linalool oxide that accounts for aroma component mass percent 1 ~ 8% or/and 2 ~ 10% trans pyranoid form linalool oxide or/and 1 ~ 8% suitable furan type linalool oxide or/and 2 ~ 10% trans furan type linalool oxide.
4. the Pu'er raw tea extract of the former tea quality of effective reservation according to claim 1 and 2 is characterized in that: described aroma component comprises the alpha-terpineol of the benzyl carbinol that accounts for its mass percent 1.5 ~ 10% and/or 5 ~ 18% and/or 3 ~ 20% geraniol.
5. the preparation method of the Pu'er raw tea extract of a claim 1, the former tea quality of 2,3 or 4 described effective reservations is characterized in that comprising tealeaves lixiviate, cooling clarification, one-level is concentrated, secondary is concentrated, low temperature drying, is specially:
A, tealeaves lixiviate: raw material tealeaves is sent in the pot for solvent extraction, added extraction water 25 ~ 85 ℃, 5 ~ 15 times of volume ratios, circulation lixiviate 0.1 ~ 3h obtains leaching liquor;
B, cooling are clarified: send into clarifier after leaching liquor is cooled to 10 ~ 40 ℃ and carry out clarifying treatment;
C, one-level are concentrated: will cool off leaching liquor after the clarification and send into and carry out one-level in the membrane separation concentrated compression apparatus and concentrate, and obtain one-level concentrate and parting liquid; The aperture of the diffusion barrier in the membrane separation concentrated compression apparatus≤0.001 μ m;
D, secondary concentrate: the one-level concentrate is sent in the secondary enrichment facility, obtained secondary concentrate and parting liquid;
E, low temperature drying: the secondary concentrate is sent into drying in the low temperature drying device, effectively kept the Pu'er raw tea extract of former tea quality.
6. preparation method according to claim 5 is characterized in that: described pot for solvent extraction be common pot for solvent extraction, diacolation type pot for solvent extraction dynamically or the countercurrent leaching tank, or the auxiliary pot for solvent extraction of ultrasonic wave, electromagnetic wave or microwave is arranged; Described cooling is adopted nature cooling, the cooling of electricity refrigeration, the cooling of cool cycles hydrothermal exchange or is extracted the hydrothermal exchange cooling; Described extraction water is distilled water, deionized water or demineralized water, and the parting liquid that obtains when perhaps concentrating with distilled water, deionized water or demineralized water and two-stage is used in combination.
7. preparation method according to claim 5 is characterized in that: described clarifier perhaps filters the clarifier that clarification combines with centrifugal clarification for filtering clarification or centrifugal clarification device, and described filtration clarification is smart filter, micro-filtration or ultra filtering clarifying.
8. preparation method according to claim 5, it is characterized in that: described secondary enrichment facility is membrane separation concentration, membrane distillation concentration or low-temperature reduced-pressure enrichment facility, membrane aperture in the described membrane separation concentration is≤0.001 μ m, and the membrane aperture in the described membrane distillation concentration is 0.01 ~ 0.5 μ m.
9. preparation method according to claim 5 is characterized in that: described low temperature drying device is that belt vacuum drying, micro-wave vacuum, vacuum freeze drying, microwave freeze-drying, cryospray are dry, a kind of or any both interlock in the normal temperature dehumidifying drier is used in combination.
10. the application of Pu'er raw tea extract in instant tea beverage, tobacco or food of the former tea quality of the described effective reservation of claim 1 ~ 4 any one.
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| CN105935118A (en) * | 2016-07-07 | 2016-09-14 | 神农架林区神农奇峰茶业有限公司 | Tea polyphenol extraction method and beverage |
| CN108850282A (en) * | 2018-07-02 | 2018-11-23 | 益阳玲智工程技术有限公司 | A kind of dark green tea and its processing method containing Jasmine |
| CN109497218A (en) * | 2019-01-15 | 2019-03-22 | 福建仙洋洋生物科技有限公司 | A kind of technique of production energy-saving high-quality tea concentrate |
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| CN111848705A (en) * | 2020-07-31 | 2020-10-30 | 中南林业科技大学 | Preparation and separation method of glucoside combined-state aroma precursor substance in tea |
| CN113144669A (en) * | 2021-04-29 | 2021-07-23 | 佛山市龙生光启科技有限公司 | Intelligent circulating extraction system of tea polyphenol based on big data |
| CN113144669B (en) * | 2021-04-29 | 2023-02-24 | 佛山市龙生光启科技有限公司 | Intelligent circulating extraction system of tea polyphenol based on big data |
| CN115152870A (en) * | 2022-07-26 | 2022-10-11 | 广东充能实业有限公司 | Tea-flavored water beverage and preparation method thereof |
| CN116144424A (en) * | 2022-09-16 | 2023-05-23 | 中国烟草总公司郑州烟草研究院 | Preparation method and application of flavor composition for bursting beads for highlighting cigarette spicy characteristics |
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