Processing technology for selenium-rich Wuliqing green tea

A processing technology and selenium-enriching technology, which is applied in tea treatment before extraction, can solve the problems of natural selenium loss and affecting health care functions, and achieve the effect of good soup color and excellent taste

Inactive Publication Date: 2016-07-06
ANHUI TIANFANG TEA IND GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Production practice shows that although the Wuli green tea made by the existing technology is of good quality, it often causes the loss of 10-15% of the natural selenium element in the tea, which affects its health care function. Green tea color, fragrance, taste and shape are excellent in quality, and a new production process that can prevent the loss of selenium element

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1: a kind of processing technology of selenium-enriched Wuli green tea spring, and its preparation steps are as follows:

[0020] 1) Picking fresh leaves; picking fresh leaves of tea trees in a selenium-enriched tea garden that has been tested and identified, and selecting the buds and leaves that are free from insects, diseases, and purple buds, contain selenium elements, and are one bud and one leaf at the beginning;

[0021] 2) Ultrasonic spread green: After the fresh leaves are collected, they are placed on a bamboo mat and spread out, and the thickness of the spread is 1cm. Then the bamboo mat is placed in a ventilated room, and an ultrasonic humidifier is placed in the room, and the green leaves are stored for 30 minutes. Then naturally spread the green for 60 minutes; ultrasonic atomized molecular water can quickly cool down, curb the activity of polyphenols in tea leaves, prevent tea leaves from drying up, and reduce the oxidation loss of selenium elem...

Embodiment 2

[0028] Embodiment 2: a kind of processing technology of selenium-enriched misty green tea in summer, and its preparation steps are as follows:

[0029] 1) Picking fresh leaves; picking fresh leaves of tea trees in a selenium-enriched tea garden that has been tested and identified, and selecting the buds and leaves that are free from insects, diseases, and purple buds, contain selenium elements, and are one bud and one leaf at the beginning;

[0030] 2) Ultrasonic spread green: After the fresh leaves are collected, they are placed on a bamboo mat and spread out to a thickness of 1.25cm. Then the bamboo mat is placed in a ventilated room, and an ultrasonic humidifier is placed indoors, and the green leaves are stored for 35 minutes. , and then naturally spread blue for 65 minutes; ultrasonic atomized molecular water can rapidly cool down, curb the activity of polyphenols in tea leaves, prevent tea leaves from drying up, and reduce oxidation and loss of selenium content, ensuring ...

Embodiment 3

[0037] Embodiment 3: a kind of processing technology of selenium-enriched Wuli green tea in autumn, and its preparation steps are as follows:

[0038] 1) Picking fresh leaves; picking fresh leaves of tea trees in a selenium-enriched tea garden that has been tested and identified, and selecting the buds and leaves that are free from insects, diseases, and purple buds, contain selenium elements, and are one bud and one leaf at the beginning;

[0039] 2) Ultrasonic spread green: After the fresh leaves are collected, they are placed on a bamboo mat and spread out to a thickness of 1.5cm. Then, the bamboo mat is placed in a ventilated room, and an ultrasonic humidifier is placed in the room, and the green leaves are stored for 40 minutes. , and then naturally spread green for 70 minutes; ultrasonic atomized molecular water can rapidly cool down, curb the activity of polyphenols in tea leaves, prevent tea leaves from drying up, and reduce the oxidation and loss of selenium content, e...

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PUM

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Abstract

The invention discloses a processing technology for selenium-rich Wuliqing green tea. The processing technology comprises the following eight steps: plucking of fresh tea leaves, ultrasonic tedding of green leaves, microwave drying, electrothermal tidying of tea strips, freeze drying, filling of nitrogen and color preservation. The processing technology employs ultrasonic tedding of green leaves, deactivation of enzymes via steam heat, primary microwave drying and freeze drying to prevent elemental selenium from loss, so a lozenge of the green tea has high selenium content; deactivation of enzymes via steam heat and electrothermal tidying of tea strips enable a tea strip to have a good color; a fragrance baking process enables the tea to have fragrance of flower; through ultrasonic tedding of green leaves and freeze drying, the tea has excellent taste; and primary microwave drying allows the soup of the tea to present a good color.

Description

technical field [0001] The invention relates to the field of tea processing, in particular to a processing technology of selenium-enriched misty green tea. Background technique [0002] Wuliqing green tea is a high-grade and famous green tea produced in southern Anhui. Because this tea is produced in the clouds and mists of the mountains and mountains in southern Anhui, its appearance is green in color and contains a certain amount of natural selenium, so it is also called selenium-enriched misty green tea. [0003] The traditional technological process of selenium-enriched Wuliqing is: picking fresh leaves, laying, fixing, cooling, shaping (arranging), and drying. Production practice shows that although the quality of Wuli green tea made by the existing process is excellent, it often causes the loss of 10-15% of natural selenium in the tea, which affects its health care function. The green tea color, aroma, taste and shape are of good quality and can prevent the loss of s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23F3/06
Inventor 郑孝和郑小平李翠红
Owner ANHUI TIANFANG TEA IND GROUP
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