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Preparation method of selenium-enriched green tea

A technology of selenium-enriched green tea and selenium-enriched tea, which is applied in the direction of pre-extraction tea treatment, etc., can solve the problems of waste of selenium element and poor solubility, and achieve the effects of improving the dissolution rate, increasing the permeability, and improving the utilization rate of the human body.

Inactive Publication Date: 2019-02-19
HANGZHOU TEA RES INST CHINA COOP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

About 80% of the selenium in selenium-enriched tea exists in the organic state of protein. Although the selenium content in tea is high, due to the poor solubility of organic macromolecules, only a small amount of selenium dissolved in tea soup is absorbed by the human body, and most of the selenium is The elements are wasted with the tea dregs

Method used

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  • Preparation method of selenium-enriched green tea

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Effect test

Embodiment 1

[0049] This embodiment includes the following steps:

[0050] (1) Green spreading: 10kg of fresh selenium-enriched tea fresh leaves, spray 1L of enzyme liquid therein, stir evenly, and spread out in the air for 3 hours in bamboo plaques; Obtained after 1L;

[0051] (2) Finishing: The fresh tea leaves after greening are processed by a 6CST-50 tea roller finishing machine. The finishing temperature is 190°C, and the greening is completed until the leaf color changes from bright green to dark green. There are no red stalks and red leaves. Hand pinch until the leaves are soft;

[0052] (3) Kneading: the green leaves are cooled to room temperature, and the green leaves are kneaded by a 6CR-40 tea rolling machine until the cords are tightly knotted and the tea juice just overflows;

[0053] (4) deblocking: the tea leaves after kneading are broken up and deblocked by a HC-40 type tea breaker;

[0054] (5) Initial drying: 6CH-0.8 type tea dryer is used for initial drying, the initi...

Embodiment 2

[0057] This embodiment includes the following steps:

[0058] (1) Green spreading: spread 10 kg of fresh selenium-enriched tea leaves in bamboo plaques for 3 hours;

[0059] (2) Finishing: The fresh tea leaves after greening are processed by a 6CST-50 tea roller finishing machine. The finishing temperature is 190°C, and the greening is completed until the leaf color changes from bright green to dark green. There are no red stalks and red leaves. Hand pinch until the leaves are soft;

[0060](3) Kneading: the green leaves are cooled to room temperature, and the weight is reduced to about 6kg, where the enzyme liquid is sprayed, and the green leaves are kneaded by a 6CR-40 type tea rolling machine until the ropes are tightly knotted, and the tea juice just overflows; the enzyme The solution is obtained after mixing 50g of plant decomposing enzyme and 50g of protease and diluting with water to 0.6L;

[0061] (4) deblocking: the tea leaves after kneading are broken up and debloc...

Embodiment 3

[0066] This embodiment includes the following steps:

[0067] (1) Spread green: 10kg of fresh selenium-enriched tea fresh leaves, spray 0.4L enzyme liquid in it, stir evenly, spread in the bamboo plaque for 3 hours; the enzyme liquid is mixed with 15g plant decomposing enzyme and 15g papain and then diluted with water Obtained after reaching 0.4L;

[0068] (2) Finishing: The fresh tea leaves after greening are processed by a 6CST-50 tea roller finishing machine. The finishing temperature is 190°C, and the greening is completed until the leaf color changes from bright green to dark green. There are no red stalks and red leaves. Hand pinch until the leaves are soft;

[0069] (3) Kneading: the green leaves are cooled to room temperature, and the weight is reduced to about 6kg, where the enzyme liquid is sprayed again, and the green leaves are kneaded by a 6CR-40 type tea rolling machine until the ropes are tightly knotted, and the tea juice just overflows; The enzyme solution i...

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Abstract

The invention provides a preparation method of selenium-enriched green tea. The preparation method of the selenium-enriched green tea comprises the steps of tea leaf paving, water removal, twisting, unblocking, primary drying and secondary drying; in a tea leaf paving and / or twisting process, food-grade plantase and / or protease is added; and in the tea leaf paving and / or twisting process, by addition of the plantase, plant cell wall breakage can be promoted, by addition of the protease, organic selenium macromolecular substances can be degraded into micromolecules, therefore, selenium solubleness in a brewing process of the selenium-enriched green tea is improved, and the absorptivity of the human body to selenium is improved.

Description

technical field [0001] The invention belongs to the technical field of tea processing, and in particular relates to a preparation method of selenium-enriched green tea. Background technique [0002] The trace element selenium is an important component of 25 human selenoproteins such as glutathione peroxidase, and is closely related to functions such as anti-oxidation, hormone regulation, and mineral element metabolism. More than 40 diseases such as cardiovascular disease and AIDS are related to selenium deficiency. As one of the three major beverages in the world, tea is a good source of selenium supplementation. Chinese tea basically contains selenium, with a content between 0.017 and 6.590 mg / kg, and about 80% of selenium exists in the organic state of protein. Drinking selenium-enriched tea can not only supplement the selenium needed by the human body, but also take in tea polyphenols, catechins, caffeine, amino acids and trace elements, which together with selenium can ...

Claims

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Application Information

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IPC IPC(8): A23F3/06A23F3/14
CPCA23F3/06A23F3/14
Inventor 刘青茹谌珍周春江焦佳王佳颖
Owner HANGZHOU TEA RES INST CHINA COOP