CN103404634A - Technology for making selenium-rich black tea - Google Patents
Technology for making selenium-rich black tea Download PDFInfo
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- CN103404634A CN103404634A CN2013102971180A CN201310297118A CN103404634A CN 103404634 A CN103404634 A CN 103404634A CN 2013102971180 A CN2013102971180 A CN 2013102971180A CN 201310297118 A CN201310297118 A CN 201310297118A CN 103404634 A CN103404634 A CN 103404634A
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- 244000269722 Thea sinensis Species 0.000 title claims abstract description 46
- 239000011669 selenium Substances 0.000 title claims abstract description 38
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 229910052711 selenium Inorganic materials 0.000 title claims abstract description 32
- 235000006468 Thea sinensis Nutrition 0.000 title claims abstract description 10
- 235000020279 black tea Nutrition 0.000 title claims abstract description 10
- 238000005516 engineering process Methods 0.000 title abstract description 6
- 235000013616 tea Nutrition 0.000 claims abstract description 46
- 238000000034 method Methods 0.000 claims abstract description 40
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- 238000007789 sealing Methods 0.000 claims abstract description 11
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- 238000012545 processing Methods 0.000 claims description 18
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- BVTBRVFYZUCAKH-UHFFFAOYSA-L disodium selenite Chemical compound [Na+].[Na+].[O-][Se]([O-])=O BVTBRVFYZUCAKH-UHFFFAOYSA-L 0.000 claims description 11
- 229960001471 sodium selenite Drugs 0.000 claims description 11
- 235000015921 sodium selenite Nutrition 0.000 claims description 11
- 239000011781 sodium selenite Substances 0.000 claims description 11
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- FRXSZNDVFUDTIR-UHFFFAOYSA-N 6-methoxy-1,2,3,4-tetrahydroquinoline Chemical compound N1CCCC2=CC(OC)=CC=C21 FRXSZNDVFUDTIR-UHFFFAOYSA-N 0.000 description 3
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Abstract
The invention relates to a black tea fungus growing process, and in particular relates to a technology for making selenium-rich black tea. The technology comprises the following steps: carrying out pile fermentation on raw black tea material, steaming the tea, spraying eurotium cristatum conidial powder onto the tea, sealing the tea and then sterilizing, carrying out fungus growing process on the tea, carrying out ultrasonic treatment, etc. By adopting the ultrasonic treatment, the method can reduce the autolysis phenomenon of eurotium cristatum, and also has the function of fixing golden flowers, thus being beneficial to protecting organic selenium to the utmost extent, reducing the high-temperature oxidative degradation of the organic selenium, and preventing the thallus from being reduced by the golden flowers under the high-temperature condition. A great deal of eurotium cristatum conidial powder is adopted for quick fermentation, so that the growth of sundry fungus can be reduced, the problem of tea mildew can be avoided, and the influence of a culture medium in the eurotium cristatum liquid to the original flavor of the tea can be avoided.
Description
Affiliated technical field:
The invention belongs to the biofermentation field, related to a kind of black tea fungus growing process, more particularly related to the manufacture craft of the black tea of a kind of rich selenium.
Background technology
Selenium is referred to as " the anticancer king " in body trace element by scientist, scientific circles' research discovery, and the height of blood selenium level is closely bound up with the generation of cancer.A large amount of survey data explanations, the height of regional food and Selenium in Soils content has direct relation with the incidence of disease of cancer, for example: food and the Se content in soil that this is regional are high, the M & M of cancer is just low, otherwise, the cancer morbidity that this is regional and the death rate are just high, the generation close relation of statement of facts selenium and cancer.Scientific circles also recognize that selenium is " anticancer king " in body trace element simultaneously.Strengthen immunity, prevent diabetes, prevent cataract, prevent cardiovascular and cerebrovascular disease, prevent Keshan disease, Kaschin-Beck disease, arthritis, removing toxic substances, toxin expelling, prevent and treat hepatopathy, protection liver.Say selenium to people's impact or quite large.
Golden flower is grown in being commonly called as of coronoid process loose capsule bacterium (Eurotium Cristatum) in traditional Fu brick tea.This bacterium has the conversion that can promote various organic substances in tealeaves, greatly improves quality and the nutrition of fermented tea, makes tealeaves soup look reddish brown, and fragrance is pure, the characteristics that flavour is mellow.Modern study also shows that it has the effect that improves the blood of human body biochemical indicator and obviously deoil greasy, sharp digestion, lowering blood-fat and reducing weight.Thereby more and more cause people's attention.In order to promote growing dim of various tealeaves, many Tea Scientific Research personnel have carried out a large amount of research, for example: " Fu brick tea grow dim technical research " is on the books in 1996 " tealeaves communication ", the Fu brick tea optimum moisture content high-temperature high humidity season that grows dim is 20%-22%, dry season is 22%-25%, while being greater than 30%, tealeaves goes mouldy, optimum thickness is 4-5cm, it is 30% that the best of brick contains the stalk amount, be difficult to grow dim lower than 5% the time, under the drying room temperature of growing dim conducting self-heating, with not higher than 25 ℃, with 30 ℃, be advisable under natural conditions.The progress of dominant bacteria in process " the Fu brick tea grow dim " is also on the books in " the tea science technology " of 2005: the optimal temperature that the Fu brick tea grows dim is 28-30 ℃, the initial stage of growing dim is controlled at 25 ℃ of left and right, can bring up to 28-32 ℃ mid-term, and the pH value is 5, and humidity is below 70%.While growing dim in addition the initial stage, golden flower is white dot, and while growing dim the later stage, golden flower is faint yellow spot.But can these researchs all rest on the Fu brick tea and grow dim.At publication number, being CN102217688A, Chinese patent describes in detail by the low temperature slowly fermenting and reduces tealeaves density and carry out large-scale production, with grow dim effect and improving the quality of products of change, can prevent from again simultaneously to tealeaves is burnt core and goes mouldy.But have limitation: a tea making mainly be take spring and summer season as main, and temperature is higher, and the various and easy growth of microbe species, adopt the low temperature slowly fermenting wayward, also not energy-conservation.Though artificial, reduce tealeaves density and can not cause tealeaves burning core, how easy residual microorganism is more goes mouldy.Two present methods adopt the loose capsule bacterium liquid of the coronoid process of artificial culture or add tea juice, though strengthened the index of some aspect, can affect the original local flavor of whole fermented tea.At the publication number Chinese patent that is CN102524442A, describe in detail and adopt hot and humid method, manually increase the loose capsule bacterium spore of coronoid process, and, by the fixing method of golden flower of high temperature, extend its holding time.The Chinese patent that is CN1656912 at publication number describes a kind of selenium-enriched vine tea and preparation method thereof in detail, air-dry surface water → sodium selenite solution that completes → knead → deblock → spray after the ampelopsis grossdentata rattan tender leaf of harvesting is cleaned → stir → dry → add Herb tea (Gynostemma pentaphyllum) and Radix Glycyrrhizae mixing → finished product organic selenium-rich vine tea.The method, mainly artificially in vine tea manufacturing process, to add inorganic selenium, makes selenium element content in product very high, and exists with inorganic selenium, but the in fact inorganic selenium utilization that is not absorbed by the body, and only has the Organic Selenium utilization that just can be absorbed by the body.And we take full advantage of the local tea making existence conditions in Zhangjiajie, in the endemic plant blade, contain a large amount of selenium elements, increase the loose capsule bacterium of coronoid process reach shorten fermentation period solve simultaneously grow dim not comprehensive, utilize the loose capsule bacterium of coronoid process that inorganic selenium is converted into to Organic Selenium, large-scale production goes out to have the rich selenium tea product of local characteristic.But golden flower standing time is long be there will be the thalline self-dissolving and disappear, Organic Selenium, easily from stripping thalline, also makes Organic Selenium be converted into inorganic selenium in the self-dissolving process, and therefore certain age, the Organic Selenium phenomenon appearred lacking in black tea party.
Summary of the invention
The object of the invention is to disclose and a kind ofly can solve the problems such as monitoring is not in place, product burns core and go mouldy of growing dim, guarantee tealeaves grow dim homogeneity good and also be convenient to drink, can keep the original quality of traditional zymotic tea, be rich in again the tea process of Organic Selenium and Flavonoid substances.
Solution of the present invention is: the manufacture craft of the black tea of a kind of rich selenium, comprise drying, quality inspection, packing and warehouse-in, its special character is before drying process, carrying out successively following procedure of processing: after the loose capsule bacterium conidia powder → tea sealing of Dark Green Tea raw material → wet heap → interpolation sodium selenite → steaming tea → sprinkling coronoid process, sterilization → tealeaves grows dim → ultrasonic processing → drying and packaging.
Procedure of processing in the technology of the present invention solution is as follows:
(1) wet heap: with sprayer, to spraying 30% Tea Polyphenols solution in dry Dark Green Tea raw material, make its moisture be controlled at 16-18%, after stirring and evenly mixing, temperature is controlled to 75-80 ℃, relative air humidity is at 80%-85%, wet heap 8-12 hour;
(2) add sodium selenite: by the tealeaves be sprayed at after wet heap, wherein the tealeaves volume (L) after the volume (L) of the sodium selenite solution that uses and wet heap is than being 25-30:1000 with 0.001% sodium selenite solution;
(3) steam tea: with the steamed 5-10 second of 100-106 ℃;
(4) spray the loose capsule bacterium conidia powder of coronoid process: the loose capsule bacterium conidia powder of a certain amount of coronoid process is sprayed on the tealeaves after steam treatment, and wherein institute's coronoid process that uses falls apart the amount (kg) of capsule bacterium conidia powder and Dark Green Tea dry weight (kg) than being 15-20:100;
(5) tea sealing sterilization: with rectangular tank with cover, hold the tealeaves of processing gained through step (4), Fruit storage 10min, and by rectangular tank with cover freshness protection package environmental sealing, then carry out wet sterilization 5min with 100-115 ℃ of steam;
(6) tealeaves grows dim: after wet sterilization, to be placed on relative air humidity be that 70-85%, temperature are 30-35 ℃ to rectangular tank with cover;
(7) ultrasonic processing: the tealeaves after growing dim carries out ultrasonic wave and processes 10min, and ultrasonic frequency is greater than 20KHz;
(8) drying: drying is carried out at drying shed, and temperature is controlled at 35-45 ℃, first high rear low, is dried in moisture content 12%.
In one embodiment, uses in step (4) coronoid process fall apart the amount of capsule bacterium conidia powder with the dry weight of tea leaves amount than being 15-20:100.
In another embodiment, in step (6), the tealeaves time of growing dim is 3-5 days.
Technique effect:
1, ultrasonic processing can reduce the autolysis of the loose capsule bacterium of coronoid process, can reach again the fixedly effect of golden flower, is conducive at utmost protect Organic Selenium, reduces the high-temperature oxydation degraded of Organic Selenium, also can prevent that golden flower from dwindling thalline under hot conditions simultaneously.
2, adopt the loose capsule bacterium conidia powder of a large amount of coronoid process to carry out Rapid Fermentation, reduced the growth of miscellaneous bacteria, can not cause the tealeaves problem of going mouldy, avoided in the loose capsule bacterium liquid of coronoid process culture medium on the former zestful impact of tealeaves.
The specific embodiment
Below with embodiment of the present invention, further illustrate essentiality content of the present invention, but with this, do not limit the present invention.
Embodiment 1:
By 30% Tea Polyphenols solution (the 30% Tea Polyphenols solution preparation method: the Tea Polyphenols powder of market purchase 60% of the Dark Green Tea raw material of 100Kg drying with atomizers spray 12kg, the water preparation that the weight such as adds), make its moisture be controlled at 16-18%, stirring and evenly mixing rear wet stack height is the 45cm left and right, cover wet cotton, temperature is controlled at 70-80 ℃, and relative air humidity is at 80%-85%, wet heap 8-12 hour; Spray 0.001% sodium selenite solution of 5L; With the steamed 5-10 second of 100-106 ℃; The loose capsule bacterium conidia powder of the coronoid process of 15kg is sprayed on the tealeaves after steam treatment; It is held to the tealeaves after processing with rectangular tank with cover, Fruit storage 10min, and by rectangular tank with cover freshness protection package environmental sealing, then carry out wet sterilization 5min with 100-115 ℃ of steam; After wet sterilization, to be placed on relative air humidity be that 70-85%, temperature are 30-35 ℃ to rectangular tank with cover; The time of growing dim is 3 days, can see a large amount of golden flower growths, and golden camellia tea is carried out to ultrasonic wave processing (frequency is greater than 20KHz) 10min; Drying is carried out at drying shed, temperature is controlled at 35-45 ℃, first high rear low, is dried in moisture content 12%, enter quality inspection, packing, warehouse-in, by the GB/t21729-2008 National Standard Method, detecting Se content again after obtained tealeaves is washed to twice is 142 μ g/kg again.
Case of comparative examples 1:
By the 30% Tea Polyphenols solution of the Dark Green Tea raw material of 100Kg drying with atomizers spray 12kg, make its moisture be controlled at 16-18%, stirring and evenly mixing rear wet stack height is the 45cm left and right, cover wet cotton, temperature is controlled at 70-80 ℃, and relative air humidity is at 80%-85%, wet heap 8-12 hour; With the steamed 5-10 second of 100-106 ℃; The loose capsule bacterium conidia powder of the coronoid process of 15kg is sprayed on the tealeaves after steam treatment; It is held to the tealeaves after processing with rectangular tank with cover, and by rectangular tank with cover freshness protection package environmental sealing, then carry out wet sterilization 5min with 100-115 ℃ of steam; After wet sterilization, to be placed on relative air humidity be that 70-85%, temperature are 30-35 ℃ to rectangular tank with cover; The time of growing dim is 5 days, can see a small amount of golden flower growth, and golden camellia tea is carried out to ultrasonic wave processing (frequency is greater than 20KHz) 10min; Drying is carried out at drying shed, and temperature is controlled at 35-45 ℃, first high rear low, is dried in moisture content 12%, then enters quality inspection, packing, warehouse-in, and detecting Se content is 23 μ g/kg.
Embodiment 2:
By the 30% Tea Polyphenols solution of the Dark Green Tea raw material of 200Kg drying with atomizers spray 25kg, make its moisture be controlled at 16-18%, stirring and evenly mixing rear wet stack height is the 45cm left and right, cover wet cotton, temperature is controlled at 70-80 ℃, and relative air humidity is at 80%-85%, wet heap 8-12 hour; Spray 0.001% sodium selenite solution of 14L; With the steamed 5-10 second of 100-106 ℃; The loose capsule bacterium conidia powder of the coronoid process of 35kg is sprayed on the tealeaves after steam treatment; It is held to the tealeaves after processing with rectangular tank with cover, Fruit storage 10min, and by rectangular tank with cover freshness protection package environmental sealing, then carry out wet sterilization 5min with 100-115 ℃ of steam; After wet sterilization, to be placed on relative air humidity be that 70-85%, temperature are 30-35 ℃ to rectangular tank with cover; The time of growing dim is 4 days, can see a large amount of golden flower growths, and golden camellia tea is carried out to ultrasonic wave processing (frequency is greater than 20KHz) 10min; Drying is carried out at drying shed, and temperature is controlled at 35-45 ℃, first high rear low, is dried in moisture content 12%, then enters quality inspection, packing, warehouse-in, and detecting Se content is 153 μ g/kg.
Case of comparative examples 2:
By the 30% Tea Polyphenols solution of the Dark Green Tea raw material of 200Kg drying with atomizers spray 25kg, make its moisture be controlled at 16-18%, stirring and evenly mixing rear wet stack height is the 45cm left and right, cover wet cotton, temperature is controlled at 70-80 ℃, and relative air humidity is at 80%-85%, wet heap 8-12 hour; With the steamed 5-10 second of 100-106 ℃; The loose capsule bacterium conidia powder of the coronoid process of 35kg is sprayed on the tealeaves after steam treatment; It is held to the tealeaves after processing with rectangular tank with cover, and by rectangular tank with cover freshness protection package environmental sealing, then carry out wet sterilization 5min with 100-115 ℃ of steam; After wet sterilization, to be placed on relative air humidity be that 70-85%, temperature are 30-35 ℃ to rectangular tank with cover; The time of growing dim is 4 days, can see a large amount of golden flower growths, and golden camellia tea is carried out to ultrasonic wave processing (frequency is greater than 20KHz) 10min; Drying is carried out at drying shed, and temperature is controlled at 35-45 ℃, first high rear low, is dried in moisture content 12%, then enters quality inspection, packing, warehouse-in, and detecting Se content is 33 μ g/kg.
Embodiment 3:
By the 30% Tea Polyphenols solution of the Dark Green Tea raw material of 300Kg drying with atomizers spray 40kg, make its moisture be controlled at 16-18%, stirring and evenly mixing rear wet stack height is the 45cm left and right, cover wet cotton, temperature is controlled at 70-80 ℃, and relative air humidity is at 80%-85%, wet heap 8-12 hour; Spray 0.001% sodium selenite solution of 30L; With the steamed 5-10 second of 100-106 ℃; The loose capsule bacterium conidia powder of the coronoid process of 60kg is sprayed on the tealeaves after steam treatment; It is held to the tealeaves after processing with rectangular tank with cover, Fruit storage 10min, and by rectangular tank with cover freshness protection package environmental sealing, then carry out wet sterilization 5min with 115 ℃ of steam of 100-; After wet sterilization, to be placed on relative air humidity be that 70-85%, temperature are 30-35 ℃ to rectangular tank with cover; The time of growing dim is 4 days, can see a large amount of golden flower growths, and golden camellia tea is carried out to ultrasonic wave processing (frequency is greater than 20KHz) 10min; Drying is carried out at drying shed, and temperature is controlled at 35-45 ℃, first high rear low, is dried in moisture content 12%, then enters quality inspection, packing, warehouse-in, and detecting Se content is 174 μ g/kg.
Claims (3)
1. the manufacture craft of the black tea of a rich selenium, concrete steps are as follows:
(1) wet heap: with sprayer, to spraying 30% Tea Polyphenols solution in dry Dark Green Tea raw material, make its moisture be controlled at 16-18%, after stirring and evenly mixing, temperature is controlled to 75-80 ℃, relative air humidity is at 80%-85%, wet heap 8-12 hour;
(2) add sodium selenite: by the tealeaves be sprayed at after wet heap, wherein the tealeaves volume (L) after the volume (L) of the sodium selenite solution that uses and wet heap is than being 25-30:1000 with 0.001% sodium selenite solution;
(3) steam tea: with the steamed 5-10 second of 100-106 ℃;
(4) spray the loose capsule bacterium conidia powder of coronoid process: the loose capsule bacterium conidia powder of a certain amount of coronoid process is sprayed on the tealeaves after steam treatment, and wherein institute's coronoid process that uses falls apart the amount (kg) of capsule bacterium conidia powder and Dark Green Tea dry weight (kg) than being 15-20:100;
(5) tea sealing sterilization: with rectangular tank with cover, hold the tealeaves of processing gained through step (4), Fruit storage 10min, and by rectangular tank with cover freshness protection package environmental sealing, then carry out wet sterilization 5min with 100-115 ℃ of steam;
(6) tealeaves grows dim: after wet sterilization, to be placed on relative air humidity be that 70-85%, temperature are 30-35 ℃ to rectangular tank with cover;
(7) ultrasonic processing: the tealeaves after growing dim carries out ultrasonic wave and processes 10min, and ultrasonic frequency is greater than 20KHz;
(8) drying: drying is carried out at drying shed, and temperature is controlled at 35-45 ℃, first high rear low, is dried in moisture content 12%.
2. according to the method for claim 1, in step (4), uses coronoid process fall apart the amount of capsule bacterium conidia powder with the dry weight of tea leaves amount than being 15-20:100.
3. according to the method for claim 1, in step (6), the tealeaves time of growing dim is 3-5 days.
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Cited By (13)
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| CN103843919A (en) * | 2014-02-25 | 2014-06-11 | 湖南农业大学 | High-quality dark green tea and processing technique thereof |
| CN105341270A (en) * | 2015-12-05 | 2016-02-24 | 金远鹏 | Health-care brick tea |
| CN105685291A (en) * | 2016-02-19 | 2016-06-22 | 长沙湘资生物科技有限公司 | Healthcare berchemia floribunda tea and method for manufacturing same |
| CN105724645A (en) * | 2016-02-19 | 2016-07-06 | 长沙湘资生物科技有限公司 | Functional black mulberry tea product and making technology thereof |
| CN105875884A (en) * | 2016-04-28 | 2016-08-24 | 王婧 | Novel green brick tea manufacturing process |
| CN105918524A (en) * | 2016-04-28 | 2016-09-07 | 长沙湘资生物科技有限公司 | Novel Fuzhuan tea and making technology thereof |
| CN106912628A (en) * | 2015-12-24 | 2017-07-04 | 衡阳智源农业科技有限公司 | Selenium-rich black tea processing method |
| CN106922865A (en) * | 2017-03-10 | 2017-07-07 | 横县南方茶厂 | A kind of selenium-rich black tea and its processing method |
| CN107114508A (en) * | 2017-05-08 | 2017-09-01 | 横县南方茶厂 | A kind of organic Se-rich probiotics black tea and its preparation |
| CN107616243A (en) * | 2017-09-29 | 2018-01-23 | 四川农业大学 | A kind of preparation technology for hiding tea |
| CN108935804A (en) * | 2018-08-01 | 2018-12-07 | 湖南乾润新瑞生物科技有限公司 | A kind of selenium-rich Fu tea and preparation method thereof |
| CN111838354A (en) * | 2020-07-24 | 2020-10-30 | 湖州鼎翔科技有限公司 | Method for increasing selenium content in instant tea |
| CN111972523A (en) * | 2020-07-24 | 2020-11-24 | 湖州鼎翔科技有限公司 | Preparation method of high-selenium solid dark tea beverage |
Citations (2)
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| CN1656912A (en) * | 2005-03-18 | 2005-08-24 | 龙外牛 | Selenium-enriched vine tea and its preparation method |
| CN102524442A (en) * | 2012-01-27 | 2012-07-04 | 向华 | Fungus growing process for black tea |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1656912A (en) * | 2005-03-18 | 2005-08-24 | 龙外牛 | Selenium-enriched vine tea and its preparation method |
| CN102524442A (en) * | 2012-01-27 | 2012-07-04 | 向华 | Fungus growing process for black tea |
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| CN103843919A (en) * | 2014-02-25 | 2014-06-11 | 湖南农业大学 | High-quality dark green tea and processing technique thereof |
| CN105341270A (en) * | 2015-12-05 | 2016-02-24 | 金远鹏 | Health-care brick tea |
| CN106912628A (en) * | 2015-12-24 | 2017-07-04 | 衡阳智源农业科技有限公司 | Selenium-rich black tea processing method |
| CN105724645A (en) * | 2016-02-19 | 2016-07-06 | 长沙湘资生物科技有限公司 | Functional black mulberry tea product and making technology thereof |
| CN105685291A (en) * | 2016-02-19 | 2016-06-22 | 长沙湘资生物科技有限公司 | Healthcare berchemia floribunda tea and method for manufacturing same |
| CN105875884A (en) * | 2016-04-28 | 2016-08-24 | 王婧 | Novel green brick tea manufacturing process |
| CN105918524A (en) * | 2016-04-28 | 2016-09-07 | 长沙湘资生物科技有限公司 | Novel Fuzhuan tea and making technology thereof |
| CN106922865A (en) * | 2017-03-10 | 2017-07-07 | 横县南方茶厂 | A kind of selenium-rich black tea and its processing method |
| CN107114508A (en) * | 2017-05-08 | 2017-09-01 | 横县南方茶厂 | A kind of organic Se-rich probiotics black tea and its preparation |
| CN107616243A (en) * | 2017-09-29 | 2018-01-23 | 四川农业大学 | A kind of preparation technology for hiding tea |
| CN107616243B (en) * | 2017-09-29 | 2020-07-07 | 四川农业大学 | Preparation process of Tibetan tea |
| CN108935804A (en) * | 2018-08-01 | 2018-12-07 | 湖南乾润新瑞生物科技有限公司 | A kind of selenium-rich Fu tea and preparation method thereof |
| CN111838354A (en) * | 2020-07-24 | 2020-10-30 | 湖州鼎翔科技有限公司 | Method for increasing selenium content in instant tea |
| CN111972523A (en) * | 2020-07-24 | 2020-11-24 | 湖州鼎翔科技有限公司 | Preparation method of high-selenium solid dark tea beverage |
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