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A kind of preparation technology of selenium-enriched black tea

A production process and technology for dark tea, applied in the direction of pre-extraction tea treatment, etc., can solve the problems of product core burning, mildew, flower blooming and other problems, and achieve the effect of reducing high-temperature oxidative degradation and reducing the growth of miscellaneous bacteria.

Inactive Publication Date: 2015-08-26
JISHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to disclose a tea that can solve the problems of insufficient flowering monitoring, core burning and mildew of the product, ensure the uniformity of tea flowering, and is easy to drink, can maintain the original quality of traditional fermented tea, and is rich in tea. Tea processing method with organic selenium and flavonoids

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Spray 12kg of 30% tea polyphenol solution (30% tea polyphenol solution preparation method: buy 60% tea polyphenol powder on the market and add equal weight of water to make it) with a sprayer to control the moisture At 16-18%, the height of the heap after stirring is about 45cm, covered with wet cotton cloth, the temperature is controlled at 70-80°C, the relative humidity of the air is 80%-85%, and the heap is 8-12 hours; spray 5L 0.001% sodium selenite solution; steam with steam at 100-106°C for 5-10 seconds; spray 15kg of S. coronoides spore powder on the steamed tea leaves; put it in a rectangular container with a cover The treated tea leaves are vacuum degassed for 10 minutes, and the rectangular container with a cover is wrapped and sealed with a fresh-keeping bag, and then steam sterilized with steam at 100-115°C for 5 minutes; after steam sterilization, the rectangular container with a cover is placed in a place where the relative humidity of the air is 70- 85%, ...

example 1

[0024] Spray 12kg of 30% tea polyphenol solution on 100Kg of dried raw black tea with a sprayer to control the water content at 16-18%. After stirring and mixing, the heap height is about 45cm. Cover with wet cotton cloth and control the temperature at 70- 80°C, relative air humidity at 80%-85%, piled up for 8-12 hours; steamed with steam at 100-106°C for 5-10 seconds; sprayed 15kg of Coronis spore powder on the steam-treated Put the treated tea leaves in a rectangular container with a cover, wrap and seal the rectangular container with a fresh-keeping bag, and then use steam at 100-115°C for steam sterilization for 5 minutes; after steam sterilization, place the rectangular container with a cover on The relative humidity of the air is 70-85%, the temperature is 30-35°C; the flowering time is 5 days, and a small amount of golden flowers can be seen growing, and the golden flower tea leaves are subjected to ultrasonic treatment (frequency greater than 20KHz) for 10 minutes; dryi...

Embodiment 2

[0026] Spray 25kg of 30% tea polyphenols solution on 200Kg of dry raw black tea with a sprayer to control the water content at 16-18%. After stirring and mixing, the heap height is about 45cm. Cover with wet cotton cloth and control the temperature at 70- 80°C, relative air humidity at 80%-85%, stacked for 8-12 hours; spray 14L of 0.001% sodium selenite solution; steam with steam at 100-106°C for 5-10 seconds; Spray the cystic fungus spore powder on the steam-treated tea leaves; put the treated tea leaves in a rectangular container with a cover, vacuum degassing treatment for 10 minutes, wrap the rectangular container with a cover and seal it with a fresh-keeping bag, and then use 100- Steam sterilization at 115°C for 5 minutes; after steam sterilization, a rectangular container with a cover is placed in a place with a relative humidity of 70-85% and a temperature of 30-35°C; the flowering time is 4 days, and a large number of golden flowers can be seen growing. The tea is sub...

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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

Technical field: [0001] The invention belongs to the field of biological fermentation, and relates to a black tea blooming process, and more specifically relates to a production process of selenium-enriched black tea. Background technique [0002] Selenium is known by scientists as the "king of anti-cancer" among trace elements in the human body. Research in the scientific community has found that the level of blood selenium is closely related to the occurrence of cancer. A large number of survey data show that the level of selenium content in food and soil in an area is directly related to the incidence of cancer. For example, if the content of selenium in food and soil in this area is high, the incidence and mortality of cancer are low, and vice versa. , the incidence and mortality of cancer in this area are high, and the facts show that selenium is closely related to the occurrence of cancer. At the same time, the scientific community also recognizes that selenium is the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23F3/08
Inventor 董爱文
Owner JISHOU UNIVERSITY
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