Tea leaf extract as well as preparation method and application thereof

A kind of tea extract and extract technology, which is applied in the field of tea extract rich in floral aroma, tea extract and its preparation, sweet and fragrant tea extract, and fruity aroma, which can solve the problem that the long-term stability of the extract cannot be guaranteed, and the composition of the aroma poor balance issues

Pending Publication Date: 2021-05-07
LUZHOU PINCHUANG TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in the method described, although the preparation of tea aroma extract by enzymatic method has a certain effect on increasing the intensity of aroma and redu

Method used

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  • Tea leaf extract as well as preparation method and application thereof
  • Tea leaf extract as well as preparation method and application thereof
  • Tea leaf extract as well as preparation method and application thereof

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preparation example Construction

[0043] The preparation method of the tea extract of the present invention comprises the following steps:

[0044] (a) pulverizing the tea leaves, adding water to prepare a slurry, adding an esterification solution to obtain a tea slurry containing the esterification solution;

[0045] (b) performing steam-gas-liquid countercurrent distillation on the tea slurry containing esterified liquid obtained in step a, to obtain tea aroma extract 1 and a solid-liquid mixture;

[0046] (c) filtering and separating the extracted solid-liquid mixture to obtain tea soup, and concentrating the tea soup;

[0047] (d) adding an esterification solution to the concentrated tea soup, and then performing steam gas-liquid countercurrent distillation to obtain a tea aroma extract 2;

[0048] (e) Combine and mix the tea aroma extract 1 and the tea aroma extract 2 to obtain a tea extract.

[0049]In step a and / or d of the present invention, the esterification liquid is organic acids, alcohols, etc. ...

Embodiment

[0055] Preparation of esterification solution: mix yellow water, wine tail, wine head, and high-temperature Daqu powder in a mass ratio of 4:3:1:1, and seal and esterify at 32°C for 30 days. After the feed liquid after esterification was settled by centrifugation, the supernatant was taken for supercritical CO 2 Extraction, the extraction conditions are: temperature 42°C, extraction pressure 10Mpa, CO 2 The flow rate is 2400kg / h, the feed liquid flow rate is 10kg / h, the pressure of separation I is 10Mpa, the temperature of separation I is 45°C, the pressure of separation II is 8MPa, and the temperature of separation II is 35°C to obtain the esterification liquid, and the yield of the esterification liquid is 4.5%. The yellow water, wine tail and wine head come from Luzhou Laojiao Co., Ltd.

[0056] 50.0kg of raw tea leaves were pulverized and mixed with deionized water to obtain tea slurry. The mass ratio of tea to water was 1:10. Add 50g of esterification solution, mix evenl...

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Abstract

The invention belongs to the technical field of extraction, and particularly relates to a tea leaf extract and a preparation method thereof. The technical problem to be solved by the invention is to provide the tea leaf extract and the preparation method thereof. The preparation method comprises the following steps: a, mixing tea leaves with water to form slurry, and adding esterification liquid to obtain tea leaf slurry containing the esterification liquid; b, performing steam gas-liquid countercurrent distillation on the tea leaf slurry containing the esterification liquid to obtain a tea aroma extract 1 and a solid-liquid mixture; c, separating the solid-liquid mixture to obtain tea soup, and concentrating the tea soup; d, adding the esterification liquid into the concentrated tea soup, and performing steam gas-liquid countercurrent distillation again to obtain a tea aroma extract 2; and e, mixing the tea aroma extract 1 with the tea aroma extract 2 to obtain the tea leaf extract. The tea leaf extract disclosed by the invention has specific sweet fragrance, flower fragrance and fruit fragrance, and besides, the shelf life stability is improved.

Description

technical field [0001] The invention belongs to the field of extraction, and specifically relates to a tea extract and a preparation method thereof, in more detail, to prepare a tea extract rich in floral, fruity and sweet flavors that is stable in nature and beneficial to long-term storage at room temperature. Background technique [0002] Different types of tea will have different aroma types. The aroma components of tea mainly include alcohols, aldehydes, esters, ketones, heterocyclics, etc. The main aroma types are sweet, floral, fruity, and honey. , roasted aroma, etc.; but the compounds that present these aromas are usually very unstable, and are easily oxidized, polymerized, and condensed by environmental factors such as oxygen, light, and heat, resulting in unnatural aroma and loss of reduction in tea extracts. [0003] CN 106028825 A discloses the following method: steam distill the plant material to obtain the steam distillation extract, add ethanol, and then perfo...

Claims

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Application Information

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IPC IPC(8): A23F3/42A23L2/64C12G3/06
CPCA23F3/426A23F3/423A23L2/64C12G3/06
Inventor 刘青青曹晓念沈才洪杨勇曹天驰万永刘敏李云辉
Owner LUZHOU PINCHUANG TECH CO LTD
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