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Preparation method of coldly extracted tea concentrated liquid and coldly extracted tea concentrated liquid

A technology of tea concentrate and cold extraction, which is applied in the field of preparation of tea concentrate, can solve the problems of long production cycle of fresh leaf freezing method, unsuitability for large-scale production, high equipment requirements, etc., to solve the risk of microbial contamination, clear and transparent tea soup, The taste is mellow and sweet

Pending Publication Date: 2016-06-01
SHANGHAI ROYOUNG BIOTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The fresh leaf freezing method has a long production cycle, high equipment requirements, and very high energy consumption, which is not suitable for large-scale production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0017] The preparation method of the cold-extracted tea concentrate provided by the present invention and the specific implementation of the cold-extracted tea concentrate will be described in detail below.

[0018] A method for preparing a cold-extracted tea concentrate of the present invention comprises the following steps:

[0019] a) Preliminarily pulverize the tea raw material to obtain primary pulverized tea material. The tea raw materials are selected from various grades of commercial green tea, oolong tea, black tea, white tea and scented tea in China and all over the world, and the tea raw materials are required to have the typical characteristics of the selected tea. The primary pulverized tea material obtained after the primary pulverization has a particle size of 10-20 meshes.

[0020] b) Sterilizing the primary pulverized tea material. The sterilization treatment adopts microwave sterilization or instantaneous high-temperature steam sterilization. The microwave...

Embodiment 1

[0030] The preparation method of the cold-extracted tea concentrate of the present embodiment comprises the following steps:

[0031] (1) Accurately weigh 20 kilograms of commercial green tea;

[0032] (2) After preliminary crushing, high-temperature steam is used for instant sterilization, and the sterilization parameters are as follows: the steam temperature is 300°C, and the sterilization time is 3s;

[0033](3) After ultrafine pulverization (the particle size of the raw material is below 40 mesh), use demineralized water for low-temperature extraction. The extraction parameters are as follows: water addition 400 kg, demineralized water temperature 4°C, and extraction time 60 minutes;

[0034] (4) Finally, through centrifugation and membrane separation, membrane concentration and vacuum rotary thin film (CT) concentration technology are combined to concentrate, and the obtained tea concentrate has a soluble solid content of about 50%.

[0035] The obtained green tea concen...

Embodiment 2

[0037] The preparation method of the cold-extracted tea concentrate of the present embodiment comprises the following steps:

[0038] (1) Accurately weigh 20 kilograms of lightly fermented commodity oolong tea leaves;

[0039] (2) After preliminary crushing, high-temperature steam is used for instant sterilization, and the sterilization parameters are as follows: the steam temperature is 150°C, and the sterilization time is 30s;

[0040] (3) After ultrafine pulverization (the particle size of the raw material is below 40 mesh), it is extracted with demineralized water at low temperature, and the extraction parameters are as follows: the amount of water added is 400 kg, the temperature of demineralized water is 10°C, and the extraction time is 40 minutes;

[0041] (4) Finally, through centrifugation and membrane separation, membrane concentration and vacuum rotary thin film (CT) concentration technology are combined to concentrate, and the obtained tea concentrate has a soluble...

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Abstract

The invention provides a preparation method of coldly extracted tea concentrated liquid and the coldly extracted tea concentrated liquid. The preparation method comprises the following steps: (a) carrying out primary crushing treatment on tea raw materials to obtain primary crushed tea materials; (b) carrying out sterilization treatment on the primary crushed tea materials; (c) carrying out ultrafine crushing treatment on the primary crushed tea materials subjected to the sterilization treatment to obtain secondary crushed tea materials; (d) carrying out low-temperature extraction treatment on the secondary crushed tea materials; (e) carrying out solid-liquid separation treatment on an extracted mixture to obtain liquid; and (f) carrying out concentration treatment on the liquid to obtain the coldly extracted tea concentrated liquid. The preparation method provided by the invention has the advantages that after the obtained coldly extracted tea concentrated liquid is diluted, tea soup is clear and transparent, and has a mellow and sweet taste; and blended pure tea and a flavored tea beverage have a typical original tea flavor, a mellow taste, an obvious sweet aftertaste and no bitter taste.

Description

technical field [0001] The invention relates to the technical field of tea concentrate preparation, in particular to a method for preparing a cold-extracted tea concentrate and the cold-extracted tea concentrate. Background technique [0002] Tea beverage is a product of modern life. Its fast and convenient drinking method has completely changed the tea drinking habits and patterns that people have followed for thousands of years, greatly facilitated tea drinkers, and expanded the time and place of drinking tea. [0003] China is the birthplace of tea and has a long history of tea planting, tea making and tea drinking. China's famous and high-quality tea is a treasure accumulated in the history of tea development. The development of RTD tea beverages provides new opportunities for the way of drinking tea, and also broadens the thinking for the development of the tea industry. How to make full use of the tea harvested in summer and autumn to produce high-quality tea beverages...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23F3/18A23F3/22A23F3/16
CPCA23F3/18A23F3/16A23F3/22
Inventor 汤兴俊黄福平刘小杰李扬
Owner SHANGHAI ROYOUNG BIOTECH CO LTD
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