Vacuum freeze drying and microwave drying combined flower fragrance type black tea powder and preparation method thereof

A vacuum freeze-drying and microwave-drying technology, which is applied in the fields of tea, tea processing before extraction, food science, etc., can solve the problems of poor product quality, achieve the effects of reduced drying time, rich and lasting flower fragrance, and reduced drying time

Pending Publication Date: 2022-02-08
SOUTH ASIAN TROPICAL AGRI SCI RES INST OF GUANGXI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a method for making flower-flavored black tea powder combined with vacuum freeze-drying combined with microwave drying, so as to solve the technical problem of poor product quality caused by the traditional black tea powder manufacturing process

Method used

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  • Vacuum freeze drying and microwave drying combined flower fragrance type black tea powder and preparation method thereof
  • Vacuum freeze drying and microwave drying combined flower fragrance type black tea powder and preparation method thereof
  • Vacuum freeze drying and microwave drying combined flower fragrance type black tea powder and preparation method thereof

Examples

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Effect test

Embodiment 1

[0045] A preparation method of flower-flavored black tea powder combined with vacuum freeze-drying and microwave-drying, comprising the following steps:

[0046] (1) Picking fresh leaves: Picking Jinxuan Oolong tea tree varieties with one bud and one leaf or one bud and two leaves in sunny days;

[0047] (2) drying and withering: the tea leaves are spread on a dustpan and dried for 22 minutes, then put into the withering tank and withered for 15 hours;

[0048] (3) Greening: Put the withered leaves in a bamboo shaker and shake for 20 minutes until there is a clear fragrance of flowers, take them out and let them stand for 48 minutes;

[0049] (4) Kneading: Put it into the kneading machine for kneading treatment, empty kneading-light kneading-heavy kneading-light kneading-loose kneading for 10 minutes each;

[0050] (5) Fermentation: The rolled leaves and tea tree flowers completed in step (4) are mixed in a mass ratio of 8.5:1, put into a black tea fermenter for fermentation,...

Embodiment 2

[0057] A preparation method of flower-flavored black tea powder combined with vacuum freeze-drying and microwave-drying, comprising the following steps:

[0058] (1) Picking of fresh leaves: picking one bud and one leaf or one bud and two leaves of Huangguanyin oolong tea tree varieties in sunny days;

[0059] (2) drying and withering: the tea leaves are spread on a dustpan and dried for 32 minutes, then put into the withering tank and withered for 13 hours;

[0060] (3) Greening: Put the withered leaves in a bamboo shaker and shake for 25 minutes until there is a clear fragrance of flowers, take them out and let them stand for 47 minutes;

[0061] (4) Kneading: Put it into the kneading machine for kneading treatment, empty kneading-light kneading-heavy kneading-light kneading-loose kneading for 11 minutes each;

[0062] (5) Fermentation: Mix the rolled leaves and tea tree flowers completed in step (4) in a mass ratio of 9:1, put them into a black tea fermenter for fermentati...

Embodiment 3

[0069] A preparation method of flower-flavored black tea powder combined with vacuum freeze-drying and microwave-drying, comprising the following steps:

[0070] (1) Picking fresh leaves: picking Tieguanyin Oolong tea tree varieties with one bud and one leaf or one bud and two leaves in sunny days;

[0071] (2) Drying and withering: the tea leaves are spread on a dustpan and dried for 38 minutes, then put into the withering tank and withered for 15 hours;

[0072] (3) Greening: Put the withered leaves into a bamboo shaker and shake for 27 minutes until there is a clear fragrance of flowers, take them out and let them stand for 42 minutes;

[0073] (4) Kneading: Put it into a kneading machine for kneading treatment, empty kneading-light kneading-heavy kneading-light kneading-loose kneading for 12 minutes each;

[0074] (5) Fermentation: Mix the rolled leaves and tea tree flowers completed in step (4) in a mass ratio of 9.5:1, put them into a black tea fermenter for fermentatio...

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Abstract

The invention discloses vacuum freeze drying and microwave drying combined flower fragrance type black tea powder and a preparation method thereof, and belongs to the technical field of tea preparation. The preparation method comprises the following steps: (1) picking fresh leaves; (2) sunning and withering; (3) carrying out fine manipulation of green tea leaves; (4) rolling; (5) fermenting; (6) stirring and separating; (7) carrying out freeze drying; (8) carrying out vacuum microwave drying; (9) grinding and sieving; and (10) carrying out aroma enhancement. According to a traditional black tea powder process, tea leaves are generally subjected to single fermentation. According to the invention, tea flowers and the tea leaves are subjected to mixed fermentation, so that the flower fragrance of the tea leaves is stronger, and the fragrance and taste of the tea leaves are better than those of black tea powder obtained through single fermentation; and the black tea powder can be used as auxiliary materials of instant milk tea, baked cakes, daily chemical products and the like.

Description

【Technical field】 [0001] The invention belongs to the technical field of tea production, and in particular relates to a flower-flavored black tea powder combined with vacuum freeze drying and microwave drying and a production method thereof. 【Background technique】 [0002] Black tea is the main type of tea consumed in the world. It has a strong, fresh and refreshing quality style, and it is the second largest export type of tea in my country. The traditional black tea powder preparation process generally uses tea leaves for single fermentation, which has problems such as poor floral fragrance; in addition, the traditional hot air drying has a low degree of retention of tea powder content, so it is urgent to transform the traditional black tea powder production process to improve the product. the quality of. 【Content of invention】 [0003] The technical problem to be solved by the present invention is to provide a method for making flower-flavored black tea powder combined...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23F3/06A23F3/08A23F3/12A23F3/22A23F3/26
CPCA23F3/06A23F3/08A23F3/12A23F3/22A23F3/26
Inventor 阳景阳梁光志陈远权罗莲凤李子平覃仁源韦锦坚冯红钰
Owner SOUTH ASIAN TROPICAL AGRI SCI RES INST OF GUANGXI
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