CN103652008A - Microwave and far-infrared composite baking method for improving quality of Tieguanyin fresh tea - Google Patents
Microwave and far-infrared composite baking method for improving quality of Tieguanyin fresh tea Download PDFInfo
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Abstract
The invention discloses a microwave and far-infrared composite baking method for improving the quality of Tieguanyin fresh tea, belonging to the technical field of tea processing. The method comprises the steps of performing microwave and far-infrared composite baking on the Tieguanyin fresh tea, wherein the heating temperature of microwave baking is 50-60 DEG C, and the microwave frequency is 2,450-4,000MHz; performing intermittent heating baking for 2-3 hours; performing far-infrared baking, wherein the far-infrared heating temperature is 90-100 DEG C, the wavelength is 40-100 microns, and the baking time is 1-2 hours. After the microwave and far-infrared composite baking, the aroma of the Tieguanyin fresh tea is mixed with flower aroma or stir-fried rice aroma, and the taste becomes fresh and mellow without bitter, so that the quality is remarkably improved.
Description
Technical field
The invention belongs to Tea Processing technical field, be specifically related to a kind of microwave and compound baking method of far infrared that improves Iron Guanyin newly picked and processed tea leaves quality.
Background technology
Tea baking technology, in oolong tea process, tea leaf quality to be had a procedure of material impact, at present, in Tea Production, applying more is that electric heating cures, a lot of Tea Production producers or peasant household all have electric dry oven, but the charcoal roasting tea that its tea leaf quality of producing cures not as good as application charcoal fire far away.But charcoal roasting is an experimental technology, the quality that the time that different people is different, place process is different, easily causes the unstable of tea leaf quality, and the gas of charcoal fire burning and exhausting also has certain pollution to environment simultaneously.How tea baking technology is innovated, found a kind of tea leaf quality that had both been conducive to improve, be beneficial to again the tea baking technology of environmental protection and large-scale production, be the problem perplexing in Tea Processing always.
Microwave technology is all used widely at aspects such as industry, agricultural, chemical industry and medical treatment, and is mainly used in the fresh-keeping and breeding of heat drying, sterilization, the anti-enzyme of food, medicinal material, pesticide pair soil bit product etc. etc.Microwave applications is fewer in the research of tea-drying, also there are some researches show applied microwave heating technique in oolong tea processing, can improve tea-drying quality.
The dehydration of far infrared tea-leaf withering machine tea curing is fast, than hot blast, cures and shortens 4min left and right, is conducive to the formation of tea aroma material.Far-infrared ray drying tealeaves has report, but microwave and far infrared are compound, cures rarely seen report.
Summary of the invention
In order to overcome electric heating, cure the deficiency roasting with charcoal; the invention provides a kind of microwave and compound baking method of far infrared that improves Iron Guanyin newly picked and processed tea leaves quality; curing the tea leaf quality of producing cures over electric heating; reach charcoal roasting level; but compare with charcoal roasting, can not only guarantee the stable of tea leaf quality, can prevent from again producing the pollution to tealeaves and atmosphere such as waste gas, charcoal ash because of timber, coal burning; both environmental protection, is conducive to again scale standardization and produces.
For achieving the above object, the present invention adopts following technical scheme:
The microwave and the compound baking method of far infrared that improve Iron Guanyin newly picked and processed tea leaves quality, is characterized in that: Iron Guanyin newly picked and processed tea leaves are laid in baking container, adopt microwave and far infrared is compound cure after, spreading for cooling, obtains the new tea product of Iron Guanyin.
The temperature of microwave baking heating is 50 ~ 60 ℃, microwave frequency 2450 MHz ~ 4000MHz, heat times 2 ~ 3 h;
Described microwave baking adopts intermittent-heating, and heat time 5s suspends 5s, and repetitive cycling is processed 2 ~ 3 h.
After microwave baking, continue that tealeaves is carried out to far infrared and cure, Far-infrared Heating temperature is 90 ~ 100 ℃, wavelength 40 ~ 100 μ m, heat time 1 ~ 2 h.
Remarkable advantage of the present invention is:
1) microwave baking tealeaves flavour alcohol and, fresh refreshing, but fragrance is lower; The fragrance that far infrared is cured is higher, but flavour owes fresh refreshing.The present invention in conjunction with application, can not only overcome both shortcomings by microwave and far-infrared technique, can also make tealeaves thick aroma and good taste;
2) the present invention determines the combination of tea baking mode, time and temperature parameter, it is 50 ℃-60 ℃ that the optimal processing parameter of the Iron Guanyin newly picked and processed tea leaves quality that is improved is combined as microwave heating temperature, microwave intermittently cures 2 ~ 3 h, after microwave baking, adopt Far-infrared Heating, temperature is 90 ℃-100 ℃, and far infrared is cured time 1 ~ 2 h;
3) tea aroma that utilizes method of the present invention to cure out significantly improves, and has parched rice perfume (or spice) or the fragrance of a flower, and flavour is more mellow fresh refreshing; Its quality surpasses electric heating cures, and reaches charcoal roasting level, but compares with charcoal roasting; can not only guarantee the stable of tea leaf quality; can prevent that again, because timber, coal burning produce the pollution to tealeaves and atmosphere such as waste gas, charcoal ash, both environmental protection, are conducive to again scale standardization and produce.
Accompanying drawing explanation
Fig. 1 is process chart of the present invention.
The specific embodiment
embodiment 1
The microwave and the compound baking method of far infrared that improve Iron Guanyin newly picked and processed tea leaves quality, its concrete steps are as follows:
1, get Iron Guanyin newly picked and processed tea leaves, tiling spreads in baking plate, and thickness is 2-3cm;
2, tealeaves is carried out to microwave and intermittently cure, cure 5s, suspend 5s, circular flow 2 h, microwave temperature is 60 ℃, microwave frequency 2450MHz;
3, microwave baking carries out far infrared by tealeaves after finishing and cures, and heating-up temperature is 100 ℃, wavelength 40 μ m, and the time of curing is 1 h;
4, by the tea spreading-and-cooling after compound curing to room temperature, through choosing, pick, weigh, be packaged as finished product.
embodiment 2
The microwave and the compound baking method of far infrared that improve Iron Guanyin newly picked and processed tea leaves quality, its concrete steps are as follows:
1, get Iron Guanyin newly picked and processed tea leaves, tiling spreads in baking plate, and thickness is 2-3cm;
2, tealeaves is carried out to microwave and intermittently cure, cure 5s, suspend 5s, circular flow 2.5 h, microwave temperature is 55 ℃, microwave frequency 2900MHz;
3, microwave baking carries out far infrared by tealeaves after finishing and cures, and heating-up temperature is 95 ℃, wavelength 80 μ m, and the time of curing is 1.5 h;
4, by the tea spreading-and-cooling after compound curing to room temperature, through choosing, pick, weigh, be packaged as finished product.
embodiment 3
The microwave and the compound baking method of far infrared that improve Iron Guanyin newly picked and processed tea leaves quality, its concrete steps are as follows:
1, get Iron Guanyin newly picked and processed tea leaves, tiling spreads in baking plate, and thickness is 2-3cm;
2, tealeaves is carried out to microwave and intermittently cure, cure 5s, suspend 5s, circular flow 3 h, microwave temperature is 50 ℃, microwave frequency 4000MHz;
3, microwave baking carries out far infrared by tealeaves after finishing and cures, and heating-up temperature is 90 ℃, wavelength 100 μ m, and the time of curing is 2 h;
4, by the tea spreading-and-cooling after compound curing to room temperature, through choosing, pick, weigh, be packaged as finished product.
By GB/T23776-2009 < < tealeaves sensory review method > >: the Tie Guanyin tea that embodiment of the present invention production technology is cured out, the two organoleptic quality index of the Iron Guanyin that cures out with traditional electronic box is evaluated, and result is as follows:
remarks:5g Tea Samples by 2,3,5min brews and evaluates, the method that adopts comment to combine with scoring, total points 100 minutes, wherein profile accounts for 20%, fragrance accounts for 30%, flavour accounts for 35%, soup look accounts for 5%, accounts for 10% at the bottom of leaf, with weighting scheme calculating quality score.
The foregoing is only preferred embodiment of the present invention, all equalizations of doing according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.
Claims (3)
1. the microwave and the compound baking method of far infrared that improve Iron Guanyin newly picked and processed tea leaves quality, is characterized in that: Iron Guanyin newly picked and processed tea leaves are laid in baking container, adopt microwave and far infrared is compound cure after, spreading for cooling, obtains the new tea product of Iron Guanyin.
2. the microwave of raising Iron Guanyin newly picked and processed tea leaves quality according to claim 1 and the compound baking method of far infrared, is characterized in that: the temperature of microwave baking heating is 50 ~ 60 ℃, microwave frequency 2450 MHz ~ 4000MHz, heat times 2 ~ 3 h;
Described microwave baking adopts intermittent-heating, and heat time 5s suspends 5s, and repetitive cycling is processed 2 ~ 3 h.
3. the microwave of raising Iron Guanyin newly picked and processed tea leaves quality according to claim 1 and the compound baking method of far infrared, it is characterized in that: after microwave baking, continue that tealeaves is carried out to far infrared and cure, Far-infrared Heating temperature is 90 ~ 100 ℃, wavelength 40 ~ 100 μ m, heat time 1 ~ 2 h.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104430973A (en) * | 2014-11-18 | 2015-03-25 | 杭州聚芳永控股有限公司 | Production method of sweet osmanthus Longjing tea |
| CN104605062A (en) * | 2014-09-29 | 2015-05-13 | 华侨大学 | Preparation method for loquat flower bud tea |
| CN106615256A (en) * | 2016-09-30 | 2017-05-10 | 华南农业大学 | Dancong tea and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN104430973A (en) * | 2014-11-18 | 2015-03-25 | 杭州聚芳永控股有限公司 | Production method of sweet osmanthus Longjing tea |
| CN106615256A (en) * | 2016-09-30 | 2017-05-10 | 华南农业大学 | Dancong tea and preparation method thereof |
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