CN1545893A - Normal temperature fresh-keeping processing method of green tea - Google Patents
Normal temperature fresh-keeping processing method of green tea Download PDFInfo
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- CN1545893A CN1545893A CNA2003101065467A CN200310106546A CN1545893A CN 1545893 A CN1545893 A CN 1545893A CN A2003101065467 A CNA2003101065467 A CN A2003101065467A CN 200310106546 A CN200310106546 A CN 200310106546A CN 1545893 A CN1545893 A CN 1545893A
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- green tea
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Abstract
The invention relates to a processing method for green tea fresh-keeping under ordinary temperature which comprises, loading green tea into packaging bags for air regulation treatment and oxygen blocking package, wherein the air regulation treatment employs nitrogen and carbon dioxide mixture gas to be filled into the packaging bags, then employing impulse electromagnetic wave to proceed radiation treatment to the packaged green tea, and storing under ordinary temperature.
Description
Technical field:
The present invention relates to a kind of processing method of green tea normal-temperature fresh-keeping, belong to human lives's necessity processing technique field.
Background technology:
Tealeaves quality deterioration main cause in storage is to include active ingredient generation oxidation reaction.Before the present invention made, traditional green tea fresh-keeping was mainly undertaken by oxygen content in reduction temperature, reduction water content and the reduction environment.The green tea fresh-keeping method of this quasi-tradition is at " hubei agricultural science ", 200 (3), 70-72, " fresh-keeping and processing " 2002,2 (1) 16-18, " tealeaves communication " 2002, all report in the articles such as 24 (1) 37-39, its common feature is to suppress various oxidasic activity in the green tea, prevents the oxidation of various active ingredients in the green tea, reaches fresh-keeping purpose.Conclusion is got up, and main method adopts following several:
1. refrigeration: utilize freezer to reduce the reserve temperature of green tea;
2. seasoning: adopt lime, charcoal or silica gel to preserve, to reduce the tealeaves moisture content with tealeaves;
3. deoxidizing: adopt oxygen scavenger, vacuumize, bleed and fill nitrogen etc. and reduce oxygen content or, adopt the combination of above method according to production cost.
Above-mentioned traditional tea fresh keeping method, fresh-keeping cost height does not reach the purpose that green tea normal temperature is preserved, and does not solve green tea shelf and household condition storage problem yet, and fresh-keeping effect is not really desirable.After adopting refrigeration, tealeaves takes out back bad change of very fast oxidation owing to moisture absorption from freezer; Seasoning causes the green tea moisture content too low, and fragility increases, and vacuumizes if add, and tealeaves is frangible very.
Summary of the invention:
The objective of the invention is to overcome above-mentioned weak point, a kind of processing method is simple, low cost of manufacture thereby provide, can suppress various oxidasic activity in the green tea, avoid scattering and taint of odour of green tea fragrance component, and can preserve local flavor, trace element and the vitamin of newly picked and processed tea leaves for a long time, thereby improve the processing method of a kind of green tea normal-temperature fresh-keeping of green tea grade greatly.
Main solution of the present invention is achieved in that
The packaging bag of earlier green tea being packed into charges into nitrogen, carbon dioxide gas mixture or inert gas then and carries out controlled atmosphere in the packaging bag and handle by pipeline; Controlled atmosphere is handled the back and is adopted hot-seal packing machine to packaging bag enclosing, hinders the oxygen packing; The electromagnetic wave that adopts the pulse electromagnetic wave generating device to produce again shone 10-60 minute the green tea after packing, and preserved under the normal temperature lucifuge.
The nitrogen percentage by volume is that 10-90 part, carbon dioxide percentage by volume are 10-90 part among the present invention.
Inert gas is among the present invention: argon gas, helium etc.
Packaging bag thickness is 0.01-0.12mm among the present invention.
The packaging bag oxygen content is 0.01-0.5% among the present invention.
The pulse electromagnetic wave that the pulse electromagnetic wave generating device uses among the present invention, voltage is 50-300V, and field intensity is-50V/cm, and frequency is 50-500Hz, and pulsewidth is 10-200ns.
Compared with the prior art the present invention has the following advantages:
Manufacture craft of the present invention is simple, low cost of manufacture, and raw material sources are convenient; Green tea is carried out controlled atmosphere handle, the controlled atmosphere method is unrestricted; Hinder oxygen packing, packing method is unrestricted, but requires airtightly, light tight, waterproof, can avoid scattering and disappearing and taint of odour of green tea fragrance component; After packing finishes, carry out pulse electromagnetic wave and handle, can make oxidizing ferment allosteric inactivation, prevent the oxidation of various active ingredients in the green tea; Do not use additive, can reach the effect of green tea fresh-keeping at normal temperatures, realize the green tea fresh-keeping under the household condition; Local flavor, trace element and the vitamin of newly picked and processed tea leaves be can preserve for a long time, thereby green tea grade and socio-economic efficiency improved greatly.
Description of drawings:
Fig. 1 is a process chart of the present invention:
The specific embodiment:
Embodiment during following the present invention incites somebody to action in conjunction with the accompanying drawings is further described:
Embodiment one:
In the present embodiment, get 120 kilograms of the bright preceding tea of Pilochun (a green tea), in the packaging bag of packing into, packaging bag adopts the 0.07mm aluminium foil to make.Be 10 parts with the nitrogen percentage by volume then, the carbon dioxide percentage by volume is that 90 parts of mists charge into the processing of Aluminium Foil Package pack carrying out controlled atmosphere by pipeline, and it is 0.4% that controlled atmosphere is handled oxygen content.So both reduce the content of nitrogen, kept the integrality of tealeaves again.After controlled atmosphere is handled, adopt hot-seal packing machine, thereby realized resistance oxygen packing, completely cut off contacting of tealeaves and oxygen packaging bag enclosing.The electromagnetic wave that adopts the pulse electromagnetic wave generating device to produce behind the packaging bag enclosing carried out treatment with irradiation 30 minutes to the green tea raw material after packing, thereby suppressed various oxidasic activity in the green tea.The pulse electromagnetic wave of above-mentioned use.Voltage 187V, field intensity 20V/cm, frequency 300Hz, pulsewidth 50ns.The green tea that pulse electromagnetic wave was handled is preserved under normal temperature lucifuge environment at last.After 12 months, the chlorophyll retention rate reaches 90%, and the vitamin C retention rate is 93.7%, and the Tea Polyphenols retention rate is 96.6%, and the free amino acid retention rate is 99.5%, and the fragrance retention rate is 92.2%.
The raw material of Cai Yonging is market and purchases in the present embodiment, and the equipment of utilization is conventional equipment.
Embodiment 2:
Get Wuxi hao tea bright before 300 kilograms of tea, Aluminium Foil Package pack thickness be 0.07mm, controlled atmosphere to adopt the nitrogen percentage by volume when handling be that 20 parts, carbon dioxide percentage by volume are 80 parts of mixing, it is 0.3% that controlled atmosphere is handled oxygen content; Use pulse electromagnetic wave irradiation 30 minutes, voltage 187V, field intensity 20V/cm, frequency 300Hz, pulsewidth 50ns.The green tea that processing method among the employing embodiment one is made is after 12 months, and the chlorophyll retention rate reaches 91%, and the vitamin C retention rate is 93.5%, and the Tea Polyphenols retention rate is 96.2%, and the free amino acid retention rate is 99%, and the fragrance retention rate is 91.9%.
Embodiment 3:
Get 80 kilograms of the bright preceding tea of Pilochun (a green tea), Aluminium Foil Package pack thickness is that the percentage by volume of argon gas in 0.07mm, the employing inert gas is 100 parts, and it is 0.3% that controlled atmosphere is handled oxygen content; Adopt pulse electromagnetic wave irradiation 30 minutes, voltage 187V, field intensity 20V/cm, frequency 300Hz, pulsewidth 50ns.The green tea that processing method among employing embodiment one, the embodiment two is made is after 12 months, the chlorophyll retention rate reaches 89.1%, and the vitamin C retention rate is 93.2%, and the Tea Polyphenols retention rate is 96.9%, the free amino acid retention rate is 99.4%, and the fragrance retention rate is 92.5%.
Claims (6)
1. the processing method of a green tea normal-temperature fresh-keeping is characterized in that earlier green tea being packed into packaging bag, nitrogen, carbon dioxide gas mixture or inert gas is charged into by pipeline carry out the controlled atmosphere processing in the packaging bag then; Controlled atmosphere is handled the back and is adopted hot-seal packing machine to packaging bag enclosing, hinders the oxygen packing; The electromagnetic wave that adopts the pulse electromagnetic wave generating device to produce again shone 10-60 minute the green tea after packing, and preserved under the normal temperature lucifuge.
2, the processing method of a kind of green tea normal-temperature fresh-keeping according to claim 1 is characterized in that described nitrogen percentage by volume is that 10-90 part, carbon dioxide percentage by volume are 10-90 part.
3, the processing method of a kind of green tea normal-temperature fresh-keeping according to claim 1 is characterized in that described inert gas is argon gas, helium.
4,, it is characterized in that described packaging bag thickness is 0.01-0.12mm according to the processing method of the described a kind of green tea normal-temperature fresh-keeping of claim 1.
5, the processing method of a kind of green tea normal-temperature fresh-keeping according to claim 1 is characterized in that described packaging bag oxygen content is 0.01-0.5%.
6, the processing method of a kind of green tea normal-temperature fresh-keeping according to claim 1 is characterized in that the pulse electromagnetic wave that described pulse electromagnetic wave generating device uses, and voltage is 50-300V, and field intensity is-50V/cm, and frequency is 50-500Hz, and pulsewidth is 10-200ns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310106546 CN1231129C (en) | 2003-12-08 | 2003-12-08 | Normal temperature fresh-keeping processing method of green tea |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310106546 CN1231129C (en) | 2003-12-08 | 2003-12-08 | Normal temperature fresh-keeping processing method of green tea |
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| Publication Number | Publication Date |
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| CN1545893A true CN1545893A (en) | 2004-11-17 |
| CN1231129C CN1231129C (en) | 2005-12-14 |
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| CN 200310106546 Expired - Fee Related CN1231129C (en) | 2003-12-08 | 2003-12-08 | Normal temperature fresh-keeping processing method of green tea |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102370012A (en) * | 2010-08-19 | 2012-03-14 | 江南大学 | Processing method capable of prolonging green tea shelf life |
| CN103070450A (en) * | 2013-01-28 | 2013-05-01 | 山东省分析测试中心 | Storage and fresh preservation method of honeysuckle |
| CN103070449A (en) * | 2011-10-25 | 2013-05-01 | 镇江新区雨泰香茗园艺专业合作社 | Method of prolonging shelf-life of green tea by using controlled atmosphere technology |
| CN103584250A (en) * | 2013-11-20 | 2014-02-19 | 刘学良 | Green tea preserving method |
| CN103931804A (en) * | 2014-04-25 | 2014-07-23 | 广西罗城新科双全有机食品有限公司 | Processing method of green tea |
| CN104000278A (en) * | 2014-06-15 | 2014-08-27 | 刘新霞 | Preservation and freshness retaining technology of chrysanthemum tea |
| CN106973980A (en) * | 2017-04-12 | 2017-07-25 | 盛宏斌 | A kind of processing method of leaf of Cynara scolymus L |
| CN107373278A (en) * | 2017-08-16 | 2017-11-24 | 贵州省科创气体有限公司 | A kind of green tea fresh-keeping gas and its compound method and device for formulating |
-
2003
- 2003-12-08 CN CN 200310106546 patent/CN1231129C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102370012A (en) * | 2010-08-19 | 2012-03-14 | 江南大学 | Processing method capable of prolonging green tea shelf life |
| CN103070449A (en) * | 2011-10-25 | 2013-05-01 | 镇江新区雨泰香茗园艺专业合作社 | Method of prolonging shelf-life of green tea by using controlled atmosphere technology |
| CN103070450A (en) * | 2013-01-28 | 2013-05-01 | 山东省分析测试中心 | Storage and fresh preservation method of honeysuckle |
| CN103070450B (en) * | 2013-01-28 | 2013-12-18 | 山东省分析测试中心 | Storage and fresh preservation method of honeysuckle |
| CN103584250A (en) * | 2013-11-20 | 2014-02-19 | 刘学良 | Green tea preserving method |
| CN103931804A (en) * | 2014-04-25 | 2014-07-23 | 广西罗城新科双全有机食品有限公司 | Processing method of green tea |
| CN104000278A (en) * | 2014-06-15 | 2014-08-27 | 刘新霞 | Preservation and freshness retaining technology of chrysanthemum tea |
| CN104000278B (en) * | 2014-06-15 | 2016-03-09 | 刘新霞 | A kind of preserving process of chrysanthemum tea |
| CN106973980A (en) * | 2017-04-12 | 2017-07-25 | 盛宏斌 | A kind of processing method of leaf of Cynara scolymus L |
| CN107373278A (en) * | 2017-08-16 | 2017-11-24 | 贵州省科创气体有限公司 | A kind of green tea fresh-keeping gas and its compound method and device for formulating |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1231129C (en) | 2005-12-14 |
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Granted publication date: 20051214 Termination date: 20100108 |