CN104663933A - Disposable tea processing technology - Google Patents
Disposable tea processing technology Download PDFInfo
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- CN104663933A CN104663933A CN201510085655.8A CN201510085655A CN104663933A CN 104663933 A CN104663933 A CN 104663933A CN 201510085655 A CN201510085655 A CN 201510085655A CN 104663933 A CN104663933 A CN 104663933A
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- tea
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Abstract
The invention relates to a disposable tea processing technology. The disposable tea processing technology comprises the following steps: removing impurities from tea, degrading pesticide residue by ozone-microwaves, removing harmful heavy metals by supercritical carbon dioxide extraction, sterilizing at the low temperature and high pressure and automatically packaging. The disposable tea processing technology can be used for removing the impurities from the tea by adopting an impurity-removing process, degrading the pesticide residue in the tea by the ozone-microwaves, simultaneously improving the tea aroma, removing the harmful heavy metals in the tea by the supercritical carbon dioxide extraction, and killing harmful microorganisms in the tea by adopting a low-temperature high-pressure sterilizing process, so that the quality, cleanness and safety of green tea can be improved, and further the real disposable tea can be achieved.
Description
Technical field
The present invention relates to a kind of processing technology of tealeaves, be specifically related to a kind of processing technology of disposable tea.
Background technology
" wash tea " and start from the Northern Song Dynasty, follow and drink formula in making tea, about 700 years so far.When Guangdong, Fujian, Taiwan brew oolong tea, custom outwells the first tea water, is referred to as " washing tea ", and somebody is classified as tea ceremony specification " washing tea ", washes that tea is accustomed to even being diffused into green tea, black tea, black tea brew among formula.The reason of washing tea has several saying: one is that tealeaves is unclean, and two is that tealeaves has residues of pesticides; Three is harmful heavy metal component residue in tealeaves; Four is that in tealeaves, harmful microbe exists; Five is awake tea, allows their fragrance and flavour reach best.Experimentally, head makes tea after leaf brewed for three seconds and topples over, and the active principles such as the Tea Polyphenols in millet paste, amino acid, vitamin and fragrance matter are outwelled, and is a kind of loss.Existing tea Processing method mostly is simple removal of impurities, effectively can not remove that the residues of pesticides in tealeaves, heavy metal component are residual, harmful microorganism etc.
Publication number is a kind of method that patent discloses disposable Tea Processing of 102302065A, it is characterized in that: by ripe tea through aqueous solution wash-out, again through dehydration, be dried to 15 ~ 18wt% first, dried tealeaves passes into steamed tea, again through redrying extremely moisture 11 ~ 13wt%, obtain finished product.Although this process improves the cleanliness factor of tealeaves, removal effect is not played to the residues of pesticides in tea and heavy metal.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of high-cleanness, high, effectively can reduce the disposable tea processing technology of Pesticide Residues in Tea and heavy metal component without harms of microbe.
For achieving the above object, the technical solution used in the present invention is as follows: a kind of disposable tea processing technology, is characterized in that: described technique comprises tealeaves removal of impurities, ozone-microwave degradation residues of pesticides, supercritical carbon dioxide extracting remove harmful heavy metal composition, cryogenic high pressure sterilization and automatic packaging operation.
In described ozone-microwave degradation residues of pesticides operation, ozone treatment concentration is 4 ~ 6mg/L; Microwave treatment power is 0.1 ~ 0.3w/g, and microwave treatment time is 3 ~ 5min, batch process, every 1min process 30s.
The operation that described supercritical carbon dioxide extracting removes harmful heavy metal composition comprises the following steps:
1) with supercritical carbon dioxide fluid static extracting excess complexing agent;
2) tealeaves of residual heavy metal is put into extraction kettle, by the supercritical carbon dioxide fluid carrying complexing agent secretly, dynamic extraction is carried out to tealeaves;
3) carbon dioxide completed after dynamic extraction enters in separating still, realizes the separation of heavy metal.
Described complexing agent is the mixed solution of beta-diketon and ethanol, and extracting pressure is 20MPa ~ 25MPa, extraction temperature is 40
oc ~ 50
oc, flow are 1 ~ 10L/ (hkg), extraction time is 45min ~ 50min, separation temperature is 20
oc ~ 30
oc, separating pressure are 1MPa ~ 5MPa.Effectively can remove the heavy metal component such as lead, mercury, chromium, cadmium and the arsenic in tealeaves.
The treatment temperature of described cryogenic high pressure sterilization is-18 DEG C, and processing pressure is 200MPa, and the processing time is 10min.Original composition, the killing microorganisms of tealeaves can be retained at a lower temperature.
Described removal of impurities operation comprises that electrostatic sorts, electromagnetism removal of impurities and look select operation.Effectively can remove the impurity in tealeaves and classification is carried out to tealeaves, improving tea leaf quality.
Connected by conveyer belt etc. to realize continuous prodution between every procedure; Keep clean health in whole technical process, cryogenic high pressure sterilization adopts totally enclosed type, in order to avoid the tealeaves after sterilization is by recontamination to automatic packaging operation.
Beneficial effect of the present invention is the foreign matter removed by removal of impurities process in tealeaves, by the residues of pesticides in ozone-microwave degradation tealeaves, promote tea aroma simultaneously, harmful heavy metal component residue in tealeaves is removed by supercritical carbon dioxide extracting, harmful microorganism in tealeaves is killed again through cryogenic high pressure sterilization processing, thus the noble and unsullied purification reaching tealeaves is produced, and improves green tea quality and wholesomeness, becomes real disposable tea.Wherein with ozone-microwave degradation Pesticide Residues in Tea, Pesticide Residues in Tea of can effectively degrading, promotes tea aroma simultaneously; Using supercritical fluid as extractant effectively by heavy metal removing remaining in tealeaves, the pattern of tealeaves, nutritional labeling and local flavor can be kept when removing heavy metal, secondary pollution can not be caused when removing heavy metal to tealeaves, also can not produce environmentally harmful refuse.
Accompanying drawing explanation
Fig. 1 is the process chart of the embodiment of the present invention.
Detailed description of the invention
Below by embodiment and the invention will be further described in conjunction with flow chart Fig. 1.
Embodiment one:
Be described in detail to produce the disposable tea of 10kg green tea.
Get the dry tea of 10kg green tea and slowly add electrostatic selecting device feeding mouth, to be placed on conveyer belt from discharging opening through the material that sorts and at the uniform velocity to carry out entering color selector feeding mouth after electromagnetism removal of impurities through electromagnetism knot screen, material carries out classification in color selector, after classification, material flows into different conveyer belts respectively and reaches subsequent processing, after look choosing, tealeaves enters ozone-microwave device, adopt ozone concentration 5mg/L, microwave treatment power 0.2w/g, microwave treatment time 5min, and microwave treatment is batch process, every 1min process 30s, above ozone treatment and microwave treatment are carried out simultaneously, be 95% to the degradation rate of agricultural chemicals.
Tealeaves after ozone-microwave treatment delivers to supercritical fluid extraction equipment through conveyer belt, and utilize supercritical carbon dioxide to extract the residual heavy metal in tealeaves, heavy metal is lead, mercury, chromium, cadmium and arsenic etc.Concrete extraction step is: (1) take beta-diketon as complexing agent, ethanol is entrainer, first uses the mixed solution beta-diketon alcoholic solution of the excessive beta-diketon of supercritical carbon dioxide fluid static extracting and ethanol; (2) then the tealeaves of residual heavy metal is put into extraction kettle, open extraction kettle bottom blast mouth, open carbon dioxide inlet valve and the outlet valve of extraction kettle more respectively, the supercritical carbon dioxide fluid having carried complexing agent secretly is made to carry out dynamic extraction by extraction kettle to the tealeaves stirred, extracting pressure 20MPa, extraction temperature 40 DEG C, extraction time 45min, carbon dioxide flow is per kilogram tealeaves 1 ~ 10L/h; (3) after having extracted, supercritical carbon dioxide fluid enters separating still, separation temperature 20 DEG C ~ 30 DEG C, and pressure 1MPa ~ 5MPa, isolates the heavy metal complex be extracted, and is depressurized to normal pressure in still to be extracted, takes out the tealeaves after extraction.The removal efficiency of this extraction step heavy metal is 90%.In addition, sodium diethyldithiocarbamate (NaFDDC) also can be adopted in this step as complexing agent.
Tealeaves after extraction process is transferred into sterilizing unit again and carries out cryogenic high pressure sterilization processing, treatment temperature-18 DEG C, processing pressure 200MPa, processing time 10min; Tealeaves after sterilization processing reaches after automatic packaging machine is packed through airtight aseptic Transfer pipe and is out disposable tea finished product.What whole technological process adopted is pile line operation, can remain the sanitation and hygiene of production environment.
Embodiment two:
By in embodiment one, the parameter of ozone-microwave treatment changes into: adopt ozone concentration 6mg/L, microwave treatment power 0.2w/g, microwave treatment time 5min, and microwave treatment is batch process, every 1min process 30s, degradation of pesticide rate reaches 98%.
Adopt the residues of pesticides in ozone-microwave degradation tealeaves, can not impact active ingredient in tealeaves, the degradation rate of Pesticide Residues in Tea up to 98%, can promote tea aroma simultaneously; The removal efficiency adopting supercritical chelating extraction to remove residual heavy metal composition in tealeaves reaches 90%, complexing agent can not residue in tealeaves, to remove in rear tealeaves residual heavy metal content lower than the requirement of national normal food sanitary standard, less on the impact of the active ingredient such as Tea Polyphenols in Tea, theanine after extraction, before and after extraction, the change of Tea Polyphenols in Tea, theanine content is less than 5%, does not affect the local flavor of tea products.
The above; be only the present invention's preferably detailed description of the invention; but protection scope of the present invention is not limited thereto, the simple modification that any person skilled in the art uses description of the present invention and accompanying drawing content to do and equivalence change, all should be encompassed in protection scope of the present invention.
Claims (9)
1. a disposable tea processing technology, is characterized in that: described technique comprises tealeaves removal of impurities, ozone-microwave degradation residues of pesticides, supercritical carbon dioxide extracting remove harmful heavy metal composition, cryogenic high pressure sterilization and automatic packaging operation.
2. disposable tea processing technology according to claim 1, is characterized in that: in described ozone-microwave degradation residues of pesticides operation, ozone treatment concentration is 4 ~ 6mg/L; Microwave treatment power is 0.1 ~ 0.3w/g, and microwave treatment time is 3 ~ 5min, batch process, every 1min process 30s.
3. disposable tea processing technology according to claim 1, is characterized in that: the operation that described supercritical carbon dioxide extracting removes harmful heavy metal composition comprises the following steps:
1) with supercritical carbon dioxide fluid static extracting excess complexing agent;
2) tealeaves of residual heavy metal is put into extraction kettle, by the supercritical carbon dioxide fluid carrying complexing agent secretly, dynamic extraction is carried out to tealeaves;
3) carbon dioxide completed after dynamic extraction enters in separating still, realizes the separation of heavy metal.
4. disposable tea processing technology according to claim 3, is characterized in that: complexing agent described in step 1) is the mixed solution of beta-diketon and ethanol, step 2) in extracting pressure used by extraction be 20MPa ~ 25MPa, extraction temperature is 40
oc ~ 50
oc, flow are 1 ~ 10L/ (hkg), extraction time is 45min ~ 50min; Separation temperature in step 3) is 20
oc ~ 30
oc, separating pressure are 1MPa ~ 5MPa.
5. the disposable tea processing technology according to claim 1 or 3, is characterized in that, described heavy metal is lead, mercury, chromium, cadmium and arsenic.
6. disposable tea processing technology according to claim 1, it is characterized in that: the treatment temperature of described cryogenic high pressure sterilization is-18 DEG C, processing pressure is 200MPa, and the processing time is 10min.
7. disposable tea processing technology according to claim 1, is characterized in that: described removal of impurities operation comprises that electrostatic sorts, electromagnetism removal of impurities and look select operation.
8. the disposable tea processing technology according to claim 1 or 7, is characterized in that: connected to realize continuous prodution by conveyer belt etc. between every procedure, keep clean health in whole technical process.
9. the disposable tea processing technology according to claim 1 or 6, is characterized in that: cryogenic high pressure sterilization adopts totally enclosed type to automatic packaging operation.
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| CN201510085655.8A CN104663933A (en) | 2015-02-17 | 2015-02-17 | Disposable tea processing technology |
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| CN201510085655.8A CN104663933A (en) | 2015-02-17 | 2015-02-17 | Disposable tea processing technology |
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Cited By (16)
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|---|---|---|---|---|
| CN105265621A (en) * | 2015-11-06 | 2016-01-27 | 林志宾 | Oolong purification method |
| CN105265622A (en) * | 2015-11-06 | 2016-01-27 | 林志宾 | Yellow tea purification method |
| CN105265619A (en) * | 2015-11-06 | 2016-01-27 | 林志宾 | Black tea purification method |
| CN105265623A (en) * | 2015-11-06 | 2016-01-27 | 林志宾 | Purification method for green tea |
| CN105265625A (en) * | 2015-11-06 | 2016-01-27 | 林志宾 | Yellow tea purification method |
| CN105265624A (en) * | 2015-11-06 | 2016-01-27 | 林志宾 | Purification method for green tea |
| CN105265627A (en) * | 2015-11-06 | 2016-01-27 | 林志宾 | Purification method for white tea |
| CN105265626A (en) * | 2015-11-06 | 2016-01-27 | 林志宾 | Purification method for white tea |
| CN105265628A (en) * | 2015-11-06 | 2016-01-27 | 林志宾 | Compressed black tea making method |
| CN105360363A (en) * | 2015-11-06 | 2016-03-02 | 林志宾 | Purification method of black tea |
| CN105360364A (en) * | 2015-11-06 | 2016-03-02 | 林志宾 | Purification method of dark tea |
| CN106387612A (en) * | 2016-08-26 | 2017-02-15 | 浙江奇异鸟生物科技有限公司 | Method for removing pesticide residues |
| CN108094584A (en) * | 2017-12-19 | 2018-06-01 | 贵州航天乌江机电设备有限责任公司 | A kind of overcritical method to tealeaves sterilizing |
| CN108835510A (en) * | 2018-07-06 | 2018-11-20 | 湖南汇升生物科技有限公司 | A method of rice protein is prepared by raw material of rice containing cadmium |
| CN110037130A (en) * | 2019-03-28 | 2019-07-23 | 湖南文理学院 | A kind of method that supercritical carbon dioxide fluid technology removing Pesticides in Tea is residual |
| CN112056420A (en) * | 2020-10-14 | 2020-12-11 | 姜旻睿 | SOD black tea processing technological process |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105265621A (en) * | 2015-11-06 | 2016-01-27 | 林志宾 | Oolong purification method |
| CN105265622A (en) * | 2015-11-06 | 2016-01-27 | 林志宾 | Yellow tea purification method |
| CN105265619A (en) * | 2015-11-06 | 2016-01-27 | 林志宾 | Black tea purification method |
| CN105265623A (en) * | 2015-11-06 | 2016-01-27 | 林志宾 | Purification method for green tea |
| CN105265625A (en) * | 2015-11-06 | 2016-01-27 | 林志宾 | Yellow tea purification method |
| CN105265624A (en) * | 2015-11-06 | 2016-01-27 | 林志宾 | Purification method for green tea |
| CN105265627A (en) * | 2015-11-06 | 2016-01-27 | 林志宾 | Purification method for white tea |
| CN105265626A (en) * | 2015-11-06 | 2016-01-27 | 林志宾 | Purification method for white tea |
| CN105265628A (en) * | 2015-11-06 | 2016-01-27 | 林志宾 | Compressed black tea making method |
| CN105360363A (en) * | 2015-11-06 | 2016-03-02 | 林志宾 | Purification method of black tea |
| CN105360364A (en) * | 2015-11-06 | 2016-03-02 | 林志宾 | Purification method of dark tea |
| CN106387612A (en) * | 2016-08-26 | 2017-02-15 | 浙江奇异鸟生物科技有限公司 | Method for removing pesticide residues |
| CN108094584A (en) * | 2017-12-19 | 2018-06-01 | 贵州航天乌江机电设备有限责任公司 | A kind of overcritical method to tealeaves sterilizing |
| CN108835510A (en) * | 2018-07-06 | 2018-11-20 | 湖南汇升生物科技有限公司 | A method of rice protein is prepared by raw material of rice containing cadmium |
| CN110037130A (en) * | 2019-03-28 | 2019-07-23 | 湖南文理学院 | A kind of method that supercritical carbon dioxide fluid technology removing Pesticides in Tea is residual |
| CN112056420A (en) * | 2020-10-14 | 2020-12-11 | 姜旻睿 | SOD black tea processing technological process |
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Application publication date: 20150603 |