Preparation method of theanine-rich lipid-lowering and blood pressure-lowering white leaf dark tea

A technology of theanine and white leaves, which is applied in the field of tea fermentation, can solve the problems of low utilization rate of resources development, quality characteristics of green leaves, no research reports on development and utilization, low yield, etc., and achieve great commercial development value and strong The ability to produce fungal polysaccharides and the effect of shortening the production cycle

Pending Publication Date: 2021-05-11
溧阳市龙昇茶叶专业合作社
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, albino tea is mainly processed by green tea production and processing technology. The raw material for processing is fresh leaves of tea trees with one bud and one leaf or one bud and two leaves. There are development bottlenecks such as low yield and low utilization rate of resources.
During the growth of albino tea trees, a large number of new shoots and leaves in the late stage of albino period and turning green also contain higher amino acids and higher tea polyphenols, which have high development and utilization value, but so far, the quality of turning green leaves Characteristics, development and utilization have not been reported yet

Method used

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  • Preparation method of theanine-rich lipid-lowering and blood pressure-lowering white leaf dark tea
  • Preparation method of theanine-rich lipid-lowering and blood pressure-lowering white leaf dark tea

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The preparation of the seed solution of S. coronoidis LYLXSTYYSHCHHJGT2 MH395157 is as follows:

[0037] Take the LYLXSTYYSHCHHJGT2 MH395157 strain of the present invention, inoculate it on a PDA solid plate by streaking and inoculate it on a PDA solid plate, activate and cultivate it at 28°C for 24 hours; use a sterilized toothpick to pick a single colony and inoculate it in a test tube containing 10 mL of PDA liquid medium, Cultivate statically at 28°C for 48h; take the cultured bacterial solution and transfer it into a conical flask containing 50mL of improved PDA medium at a ratio of 5% (v / v), and cultivate at 28°C for 48h to obtain the seed solution ,spare.

Embodiment 2

[0039] A preparation method of white leaf black tea rich in theanine for lowering fat and blood pressure, the steps are:

[0040] 1) Withering of fresh tea leaves: In late spring and early summer, pick fresh tea leaves from albino tea trees without pests and diseases. The picking parts are one bud with three to four leaves, and wither in the withering field for 18 hours, turning it every 2 hours until the tea leaves When the water content reaches 50-60%, the leaves are soft and the stems are soft, and the leaves are withered.

[0041] 2) Fixing: Put the withered leaves into the drum fixing machine, and sterilize at 200°C for 60 seconds to get the fixed leaves;

[0042] 3) Stacking: Put the green leaves into the stacking room for 24 hours, and the stacking height is 45cm. The temperature of the heap is 40°C, the water content of the leaves of the heap reaches 30%, and when the bottom color of the leaves turns brown, the heap is finished, and the leaves are obtained.

[0043] ...

Embodiment 3

[0049] A preparation method of white leaf black tea rich in theanine for lowering fat and blood pressure, the steps are:

[0050] 1) Withering of fresh leaves: In late spring and early summer, pick the fresh leaves of albino tea trees without pests and diseases. The picking parts are three to four leaves per bud, and wither in the withering field for 18 hours, and turn it every 2 hours until the tea leaves are fresh. When the water content of leaves reaches 50-60%, the leaf quality is soft, the leaf stems are soft, the smell of green grass disappears, and the fragrance of nectar is exposed, and the leaves are withered.

[0051] 2) Fixing: Put the withered leaves into the drum fixing machine, and fix them at 250°C for 40 seconds to get the green leaves;

[0052] 3) Wotting pile: Send the green leaves into the pile pile room for 24-36 hours, and the stacking height is 40-50cm. The temperature of the heap is 50°C, the water content of the leaves of the heap reaches 30-35%, and w...

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Abstract

The invention discloses a preparation method of theanine-rich lipid-lowering and blood pressure-lowering white leaf dark tea. The dark tea is prepared by taking fresh white tea leaves as raw materials through the procedures of withering, fixation, pile fermentation, inoculated fermentation, drying, autoclaved setting, aging and the like. In the processing process, Eurotitucristatum LYLXSTYYSHCHHJGT2 MH395157 is adopted as a fermentation strain (the preservation number is CGMCC No. 21022); rapid conversion of macromolecular substances such as polyphenol, polysaccharide and protein in the tea is achieved; the production cycle is significantly shortened; the product quality is stable; the tea aroma and the fungus aroma are coordinated and pure; the tea soup is red and bright; the taste is mellow; the probiotic functions of Liyang Tianmu lake white tea and eurotium cristatum are fused; the dark tea is rich in functional factors such as flavone, tea polysaccharide and thearubigins; the theanine content reaches 3.2%; the in-vitro inhibition lipase activity reaches over 920U / L; and the dark tea has significant lipid-lowering and blood pressure-lowering effects, also has the functions of resisting oxidation, resisting bacteria, diminishing inflammation, improving memory, regulating intestinal flora and the like, and is extremely wide in market prospect.

Description

technical field [0001] The invention belongs to the technical field of tea fermentation, and relates to a method for preparing black tea, in particular to a method for preparing fat-lowering and blood-pressure-reducing white-leaf black tea rich in theanine. Background technique [0002] Albino tea tree refers to a type of tea tree variety whose leaves turn yellowish-white or yellow under the induction of low temperature or light. It is mainly produced in Anji, Zhejiang and Liyang, Jiangsu. Albino tea tastes fresh and refreshing, with a sweet aftertaste. It contains a variety of nutritional and health-care ingredients. It has the characteristics of high amino acid and low tea polyphenols. It has pharmacological effects such as lowering blood pressure, blood fat, anti-oxidation, liver protection and immune regulation. High nutritional value, economic value and development and application prospects. [0003] At present, albino tea processing mainly adopts green tea production ...

Claims

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Application Information

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IPC IPC(8): A23F3/06A23F3/08A23F3/10A23F3/14
CPCA23F3/06A23F3/08A23F3/10A23F3/14
Inventor 黎顺庚黎筱
Owner 溧阳市龙昇茶叶专业合作社
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