CN1295972C - Application of ultraviolet light sterilization technology in processing Pu'er tea - Google Patents
Application of ultraviolet light sterilization technology in processing Pu'er tea Download PDFInfo
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- CN1295972C CN1295972C CNB2005100109734A CN200510010973A CN1295972C CN 1295972 C CN1295972 C CN 1295972C CN B2005100109734 A CNB2005100109734 A CN B2005100109734A CN 200510010973 A CN200510010973 A CN 200510010973A CN 1295972 C CN1295972 C CN 1295972C
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Abstract
The present invention relates to an application of ultraviolet light sterilization technology to the processing of Pu'er tea, which belongs to the technical field of optical application. The present invention applies the ultraviolet light sterilization technology to the processing of Pu'er tea by the characteristic condition that ultraviolet rays can kill various microbes and penetrate air and have strong capability of disinfecting article surfaces, more specifically to the disinfection of raw materials and workshops of Pu'er tea. The application of the ultraviolet light sterilization technology and the traditional sterilization methods of heating, ethanol, hydrogen peroxide, ozone, etc. combine to produce Pu'er tea. The present invention has the advantages of simple operation by ultraviolet light sterilization, clean working environment and high security. The ultraviolet light sterilization is used for the mass production process of Pu'er tea, and exerts an important function on the stabilization and the improvement of the quality of Pu'er tea.
Description
Technical field:
The present invention relates to the ultraviolet light sterilization method in a kind of Pu'er tea processing, belong to the optical application technical field.
Background technology:
As everyone knows, microorganism is a part important in the living nature, is the invisible biologies of naked eyes.But microorganism has important irreplaceable effect to ecological environment and with the human aspect that concerns, with the Human's production life close getting in touch is arranged.Microorganism extensively exists at nature, and is of a great variety, as long as condition is fit to just can grow on various media, breed, causes product quality to change, and performance descends, or even destructive destruction.Especially in food processing, become a key factor of control food quality and wholesomeness.Therefore, the technology of control microorganism---sterilization becomes one of emphasis of technical research.
In the processing and transportation of Pu'er tea, the raw materials for production solar dried green tea of Pu'er tea all can bacteria infection, in the Pu'er tea process, also can bring microorganism into, these colonies, be in the high-nutrient, grow, breed as long as the temperature that is fit to is just very easy, it is a lot of unfavorable that the quality of Pu'er tea has been brought.Therefore, in manufacture craft, must sterilize.Traditional sterilizing methods has heating, alcohol, hydrogen peroxide, ozone etc., and is though these methods have certain sterilization effect, not good enough to the sterilization of assorted bacterium etc.
In the Pu'er tea research field, lack subject and carry out the research of Pu'er tea from the angle of microorganism.By literature search, do not see the employing open source literature report identical in yunnan puer tea processing with sterilizing methods of the present invention.
Summary of the invention:
The objective of the invention is to promote the Pu'er tea quality and study, the sterilization technology that improves the Pu'er tea quality is provided for manufacturing enterprise from elimination harmful microbe angle Pu'er tea production.
The present invention utilizes ultraviolet ray can kill various microorganisms, and penetrates air and the characteristics strong to the article surface disinfecting power, ultraviolet light sterilization technology is applied to specifically be used for the sterilization in Pu'er tea raw material and workshop in the processing of Pu'er tea.And combine with sterilizing methods such as traditional heating, alcohol, hydrogen peroxide, ozone, improved the Pu'er tea quality effectively.
Studies show that in a large number the bactericidal mechanism that ultraviolet ray is used for Pu'er tea processing is:
3, protein photodissociation sex change
Behind the UV-irradiation, the ring-type ArAA in the bacterium protein can absorb ultraviolet ray, connects amino acid whose peptide bond and also has the ability that absorbs ultraviolet light, thereby destroyed the structure in the bacterioprotein, causes protein denaturation, thalline death.
4, to the effect of nucleic acid
Nucleic acid is the necessary material of bacterial growth, and the absorption spectrum of nucleic acid is almost completely consistent with the bactericidal action spectrum of ultraviolet light, thereby has caused the variation on the structural nucleic acid molecule, has lost its function, causes the sex change and the thalline death of protein.
3. to the effect of enzyme
Under UV-irradiation, make some oxidase actives reductions in the thalline, oxidability disappears and causes thalline death.
4. ionization produces ozone
Ultraviolet light makes airborne oxygen ionization produce the ozone with extremely strong bactericidal action by behind the air.
When ultraviolet light is used for the sterilization in Pu'er tea raw material and workshop, adopt suspension type, side formula, top formula that the ultraviolet lamp direct irradiation is installed, generally use the ultraviolet lamp of 30w power, intensity＞70 μ Wcm at the 1m place
-2Apart from internal radiation, coverage is 2m during air sterillization at 25～60cm in the tealeaves sterilization, and irradiation time is 30～120min.The quantity of indoor installation ultraviolet lamp is average every cubic metre and is no less than 1.5w.
The invention has the advantages that: ultraviolet light sterilization is simple to operate, operating environment cleaning, safe, and ultraviolet light sterilization is used for the large-scale production process of Pu'er tea, can play a significant role to stabilizing and increasing of Pu'er tea quality.
The specific embodiment:
The sterilization of embodiment 1:(Pu'er tea raw material solar dried green tea)
Adopt suspension type ultraviolet lamp direct irradiation, selecting power is the lamp of 30w, control every cubic metre be no less than 1.5w power, at the intensity＞70 μ Wcm at 1m place
-2Tealeaves sterilization respectively at 25cm, 45cm, 60cm apart from internal radiation, irradiation time is respectively 30min, 60min, 120min.After the uviol lamp sterilization, can kill the assorted bacterium of harmful microorganism in the tealeaves, for next step processing is laid a good foundation.
Pu'er tea raw material after the uviol lamp sterilization is used for the processing of Pu'er tea, because the not interference of assorted bacterium, its quality is significantly improved, the Pu'er tea product of formation, and the soup look red is dense bright, the sweet cunning of flavour, unique Chen Xiang.
The sterilization of embodiment 2:(workshop)
Substantially with embodiment 1, difference is: irradiation distance is 2m, and irradiation time is 100min.
Claims (1)
1, the ultraviolet light sterilization method in a kind of Pu'er tea processing is characterized in that this method is:
The quantity of a. indoor installation ultraviolet lamp is average every cubic metre and is no less than 1.5w, and the power of ultraviolet lamp is 30w, at the intensity＞70 μ Wcm at 1m place
-2
B. ultraviolet lamp is interior to the tealeaves illumination-based disinfection in 25～60cm distance, and coverage is 2m during air sterillization, and irradiation time is 30～120min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100109734A CN1295972C (en) | 2005-08-22 | 2005-08-22 | Application of ultraviolet light sterilization technology in processing Pu'er tea |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100109734A CN1295972C (en) | 2005-08-22 | 2005-08-22 | Application of ultraviolet light sterilization technology in processing Pu'er tea |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1729808A CN1729808A (en) | 2006-02-08 |
| CN1295972C true CN1295972C (en) | 2007-01-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100109734A Expired - Fee Related CN1295972C (en) | 2005-08-22 | 2005-08-22 | Application of ultraviolet light sterilization technology in processing Pu'er tea |
Country Status (1)
| Country | Link |
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| CN (1) | CN1295972C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103005022A (en) * | 2012-12-14 | 2013-04-03 | 华南农业大学 | Method for ageing Pu'er tea by utilizing ozone |
| CN110326682A (en) * | 2019-05-08 | 2019-10-15 | 西咸新区茯茶镇茶业有限公司 | A kind of Fu tea floating loose tea preparation process of Yunnan black tea tea |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1234187A (en) * | 1999-04-24 | 1999-11-10 | 攸伟刚 | Compounded-trea product and production process thereof |
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2005
- 2005-08-22 CN CNB2005100109734A patent/CN1295972C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1234187A (en) * | 1999-04-24 | 1999-11-10 | 攸伟刚 | Compounded-trea product and production process thereof |
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| Publication number | Publication date |
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| CN1729808A (en) | 2006-02-08 |
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Granted publication date: 20070124 Termination date: 20100822 |