CN109303125A - A kind of production method of selenium-rich Green Ice Tea - Google Patents
A kind of production method of selenium-rich Green Ice Tea Download PDFInfo
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- CN109303125A CN109303125A CN201811389542.7A CN201811389542A CN109303125A CN 109303125 A CN109303125 A CN 109303125A CN 201811389542 A CN201811389542 A CN 201811389542A CN 109303125 A CN109303125 A CN 109303125A
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23F—COFFEE; TEA; THEIR SUBSTITUTES; MANUFACTURE, PREPARATION, OR INFUSION THEREOF
- A23F3/00—Tea; Tea substitutes; Preparations thereof
- A23F3/06—Treating tea before extraction; Preparations produced thereby
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Abstract
The invention discloses a kind of production methods of selenium-rich Green Ice Tea, belong to tea processing technical field.The production method of the selenium-rich Green Ice Tea, includes the following steps: step 1: raw material picking；Step 2: booth is green；Step 3: water-removing；Step 4: rubbing；Step 5: cryogenic freezing.Compared with the green tea of prior art processing, the selenium-rich green tea that the present invention processes can improve Selenium Content in tea 12%~18%, improve amino acid content 8%~12% in tealeaves, reduce loss of the drying procedure to Amino Acids in Tea, chlorophyll etc., manufactured Tea color is green delicious, the energy consumption and recruitment cost for reducing baking process simultaneously, greatly improve the quality of tealeaves.
Description
Technical field
The present invention relates to a kind of production methods of selenium-rich Green Ice Tea, belong to tea processing technical field.
Background technique
Se rich tea, which refers to, meets selenium content in People's Republic of China (PRC) agricultural industry criteria NY/T 600-2002 " Se rich tea "
In the tealeaves tealeaves of 0.25mg/kg~4.00mg/kg standard, with beneficial effects such as anti-oxidant, health cares.Due in tealeaves
Selenium is mostly Organic Selenium, and drinking Se rich tea just becomes the desirable route of human body supplement selenium element.The system of Se rich tea currently on the market
It is similar to ordinary tea leaves processing method to make method, is only processed using selenium-rich fresh tea leaf raw material according to conventional method.Due to tradition
The processes such as water-removing and drying during Green Tea Processing take higher temperature, therefore not can avoid and make to Organic Selenium in tealeaves
At bigger loss, while excessively high drying temperature also causes the decomposition of part fragrance component and flavour component in tealeaves
Volatilization causes phenomena such as green tea quality declines, dry tea selenium content is not up to standard.
To sum up, the production method for developing a kind of new selenium-rich green tea is needed, to make up drawbacks described above.
Summary of the invention
The purpose of the present invention is overcome the deficiencies of the prior art and provide a kind of production method of selenium-rich Green Ice Tea.With it is existing
The green tea of technology processing is compared, and the selenium-rich green tea that the present invention processes can improve Selenium Content in tea 12%~18%, improves tealeaves
Middle amino acid content 8%~12% reduces loss of the drying procedure to Amino Acids in Tea, chlorophyll etc., manufactured Tea color
It is green delicious, while reducing the energy consumption and recruitment cost of baking process, greatly improve the quality of tealeaves.
The technical scheme to solve the above technical problems is that a kind of production method of selenium-rich Green Ice Tea, including such as
Lower step:
Step 1: raw material picking
Pick natural selenium-rich tea place fresh leaves of tea plant two leaves and a bud or same tenderness to folder leaf, obtain tea raw material；
Step 2: booth is green
The tea raw material that step 1 is picked is spread on bamboo sieve, is spread thickness 2cm~3cm, is placed at shady and cool ventilation,
Under the conditions of relative humidity is 70%~90%, temperature is 23 DEG C~25 DEG C, spreading to moisture content is 68wt%~72wt%, is obtained
Spread out leafiness；
Step 3: water-removing
The booth leafiness that step 2 is obtained uses roller fixation, is 220 DEG C~240 DEG C in temperature, finish 3min~5min
Afterwards, spreading for cooling obtains water-removing leaves；
Step 4: rubbing
The water-removing leaves that step 3 is obtained, using sky rub 5min~10min, gently press 10min~15min, loosening pressure 3min~
5min is rubbed, and the tealeaves rubbed is obtained；
Step 5: cryogenic freezing
The tealeaves rubbed that step 4 is obtained is freezed in -18 DEG C~-10 DEG C to get the selenium-rich Green Ice Tea.
The present invention eliminates the baking process of the prior art in the manufacturing process of selenium-rich green tea, instead cryogenic freezing work
Sequence.Compared with the green tea of prior art processing, the selenium-rich green tea that the present invention processes can improve Selenium Content in tea 12%~18%,
Improve amino acid content 8%~12% in tealeaves, avoid the baking process of the prior art to part fragrance in selenium and tealeaves at
Point and the decomposition of flavour component volatilize, made tealeaves soup look is yellowish green, bright, fragrance faint scent, and flavour alcohol is refreshing, tea residue is yellowish green,
Bright, uniform, selenium reserved is high, greatly improves tea leaf quality, reduces the investment of processing link.
Wherein, step 1 picking natural selenium-rich tea place fresh leaves of tea plant two leaves and a bud or same tenderness to folder leaf when, need to protect
It is complete, fresh, uniform to hold fresh leaf.
Based on the above technical solution, the present invention can also be improved as follows.
Further, natural selenium-rich tea place described in step 1 refers to that the content of selenium element in tea garden soil is greater than or equal to
0.4mg/kg, soil pH are 4.8~6.0.
It is using above-mentioned further beneficial effect: can guarantees that picking the dark brownish green selenium content for being processed into dry tea meets mark
It is quasi-.
Further, sky described in step 4 is rubbed as 8min, and the light pressure is 12min, and the loosening pressure is 4min.
Be using above-mentioned further beneficial effect: using this parameter, the effect rubbed is best.
Further, the time of freezing described in step 5 is 2h.
Beneficial effects of the present invention:
(1) compared with the green tea of prior art processing, the selenium-rich green tea that the present invention processes can improve Selenium Content in tea
12%~18%, amino acid content 8%~12% in tealeaves is improved, avoids the baking process of the prior art in selenium and tealeaves
The decomposition of part fragrance component and flavour component is volatilized.
(2) the made tealeaves soup look of selenium-rich green tea that the present invention processes is yellowish green, bright, and fragrance faint scent, flavour alcohol is refreshing, and tea residue is yellow
Green, bright, uniform, selenium reserved is high, greatly improves tea leaf quality, reduces the investment of processing link.
(3) production method of the invention is simple, and operation is easy, wide market, is suitble to large-scale production.
Specific embodiment
Principles and features of the present invention are described below in conjunction with specific embodiment, example is served only for explaining this hair
It is bright, it is not intended to limit the scope of the present invention.
Embodiment 1
The production method of the selenium-rich Green Ice Tea of the present embodiment, includes the following steps:
Step 1: raw material picking
Pick natural selenium-rich tea place fresh leaves of tea plant two leaves and a bud or same tenderness to folder leaf, obtain tea raw material.Institute
It states natural selenium-rich tea place and refers to that the content of selenium element in tea garden soil is greater than or equal to 0.4mg/kg, soil pH is 4.8~6.0.
Step 2: booth is green
The tea raw material that step 1 is picked is spread on bamboo sieve, is spread thickness 2cm, is placed at shady and cool ventilation, relatively wet
Under the conditions of degree is 70%, temperature is 23 DEG C, spreading to moisture content is 68wt%, obtains booth leafiness；
Step 3: water-removing
The booth leafiness that step 2 is obtained use roller fixation, in temperature be 220 DEG C, finish 3min~5min after, spreading for cooling,
Obtain water-removing leaves；
Step 4: rubbing
The water-removing leaves that step 3 is obtained rub 5min using sky, gently 15min, loosening pressure 3min are pressed to be rubbed, rubbed
Good tealeaves；
Step 5: cryogenic freezing
The tealeaves rubbed that step 4 is obtained carries out freezing 2h in -10 DEG C to get the selenium-rich Green Ice Tea.
Embodiment 2
The production method of the selenium-rich Green Ice Tea of the present embodiment, includes the following steps:
Step 1: raw material picking
Pick natural selenium-rich tea place fresh leaves of tea plant two leaves and a bud or same tenderness to folder leaf, obtain tea raw material.Institute
It states natural selenium-rich tea place and refers to that the content of selenium element in tea garden soil is greater than or equal to 0.4mg/kg, soil pH is 4.8~6.0.
Step 2: booth is green
The tea raw material that step 1 is picked is spread on bamboo sieve, is spread thickness 3cm, is placed at shady and cool ventilation, relatively wet
Under the conditions of degree is 80%, temperature is 24 DEG C, spreading to moisture content is 70wt%, obtains booth leafiness.
Step 3: water-removing
The booth leafiness that step 2 is obtained uses roller fixation, is 23 DEG C in temperature, finishes after 4min, spreading for cooling is finished
Leaf.
Step 4: rubbing
The water-removing leaves that step 3 is obtained rub 8min using sky, gently 12min, loosening pressure 4min are pressed to be rubbed, rubbed
Good tealeaves.
Step 5: cryogenic freezing
The tealeaves rubbed that step 4 is obtained carries out freezing 2h in -14 DEG C to get the selenium-rich Green Ice Tea.
Embodiment 3
The production method of the selenium-rich Green Ice Tea of the present embodiment, includes the following steps:
Step 1: raw material picking
Pick natural selenium-rich tea place fresh leaves of tea plant two leaves and a bud or same tenderness to folder leaf, obtain tea raw material.Institute
It states natural selenium-rich tea place and refers to that the content of selenium element in tea garden soil is greater than or equal to 0.4mg/kg, soil pH is 4.8~6.0.
Step 2: booth is green
The tea raw material that step 1 is picked is spread on bamboo sieve, is spread thickness 2cm, is placed at shady and cool ventilation, relatively wet
Under the conditions of degree is 90%, temperature is 25 DEG C, spreading to moisture content is 72wt%, obtains booth leafiness；
Step 3: water-removing
The booth leafiness that step 2 is obtained uses roller fixation, is 240 DEG C in temperature, finishes after 5min, spreading for cooling is killed
Leafiness；
Step 4: rubbing
The water-removing leaves that step 3 is obtained rub 10min using sky, gently 10min, loosening pressure 5min are pressed to be rubbed, rubbed
Good tealeaves；
Step 5: cryogenic freezing
The tealeaves rubbed that step 4 is obtained carries out freezing 2h in -18 DEG C to get the selenium-rich Green Ice Tea.
Comparative example
Unlike embodiment 2, in the step 5 of comparative example, using hot-air seasoning, i.e., rubbed what step 4 obtained
Tealeaves, be placed in perfuming machine for tea, according to 105 DEG C~110 DEG C of gross fire, 90 DEG C~95 DEG C of final firing, be dried to moisture content and be lower than
5%, obtain green tea.Remaining step and embodiment 2 are all identical.
The green tea that the selenium-rich Green Ice Tea and comparative example that Example 2 obtains respectively obtain, detects amino acid therein respectively
Content and Se content, and sensory review is carried out, specifically it is shown in Table 1.
The tea leaf quality comparison that 1 comparative example of table and embodiment 2 obtain
| Embodiment 2 | Comparative example | |
| Total amino acid (%) | 2.15 | 1.89 |
| Se content (mg/kg) | 0.68 | 0.52 |
| Shape | It is still tight, blackish green, slightly band is yellow | Still tight knot, slightly withered and yellow |
| Soup look | It is green bright | It is greenish-yellow to owe bright |
| Fragrance | It is Hua Lixiang, strong | It is tender fragrant, still dense |
| Flavour | It is mellow, contain faint scent | It is pure and mild, still dense |
| Tea residue | It is yellowish green, even, bright | Greenish-yellow, Shang Liang |
It can be seen that the present invention eliminates the baking process of the prior art in the manufacturing process of selenium-rich green tea, instead
Cryogenic freezing process.Compared with the green tea of prior art processing, the selenium-rich green tea that the present invention processes can improve Selenium Content in tea
12%~18%, amino acid content 8%~12% in tealeaves is improved, avoids the baking process of the prior art in selenium and tealeaves
The decomposition of part fragrance component and flavour component is volatilized, and made tealeaves soup look is yellowish green, bright, fragrance faint scent, and flavour alcohol is refreshing,
Tea residue is yellowish green, bright, uniform, and selenium reserved is high, greatly improves tea leaf quality, reduces the investment of processing link.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (4)
1. a kind of production method of selenium-rich Green Ice Tea, which comprises the steps of:
Step 1: raw material picking
Pick natural selenium-rich tea place fresh leaves of tea plant two leaves and a bud or same tenderness to folder leaf, obtain tea raw material；
Step 2: booth is green
The tea raw material that step 1 is picked is spread on bamboo sieve, is spread thickness 2cm~3cm, is placed at shady and cool ventilation, opposite
Under the conditions of humidity is 70%~90%, temperature is 23 DEG C~25 DEG C, spreading to moisture content is 68wt%~72wt%, and it is green to obtain booth
Leaf；
Step 3: water-removing
The booth leafiness that step 2 is obtained uses roller fixation, is 220 DEG C~240 DEG C in temperature, after 3min~5mi n that finishes, spreads out
It is cool, obtain water-removing leaves；
Step 4: rubbing
The water-removing leaves that step 3 is obtained rub 5min~10mi n, light pressure 10mi n~15mi n, loosening pressure 3min~5mi using sky
N is rubbed, and the tealeaves rubbed is obtained；
Step 5: cryogenic freezing
The tealeaves rubbed that step 4 is obtained is freezed in -18 DEG C~-10 DEG C to get the selenium-rich Green Ice Tea.
2. a kind of production method of selenium-rich Green Ice Tea according to claim 1, which is characterized in that natural rich described in step 1
Selenium tea place refers to that the content of selenium element in tea garden soil is greater than or equal to 0.4mg/kg, and soil pH is 4.8~6.0.
3. a kind of production method of selenium-rich Green Ice Tea according to claim 1, which is characterized in that sky described in step 4 rub for
8min, the light pressure are 12mi n, and the loosening pressure is 4mi n.
4. a kind of production method of selenium-rich Green Ice Tea according to claim 1, which is characterized in that freezing described in step 5
Time is 2h.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109730168A (en) * | 2019-02-20 | 2019-05-10 | 云南昌宁红茶业集团有限公司 | Green tea removes the drying means of moisture content by distilling from vacuum freezing |
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| Publication number | Priority date | Publication date | Assignee | Title |
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Application publication date: 20190205 |