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Preparation method of cold extraction instant tea and special freezing equipment

A technology of freezing equipment and instant tea, which is applied in tea extraction and pre-extraction tea treatment, etc. It can solve the problems of bitter taste, dark color and low aroma, and achieve the effect of good flavor, pure aroma, and enhanced flavor

Pending Publication Date: 2022-07-29
山东泰乐源农业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional instant tea production, because of thermal processing, the products produced have problems such as dark color, low aroma, low taste and bitter taste, so the application is greatly limited, and it is often only used to process iced tea beverages

Method used

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  • Preparation method of cold extraction instant tea and special freezing equipment
  • Preparation method of cold extraction instant tea and special freezing equipment
  • Preparation method of cold extraction instant tea and special freezing equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] This embodiment provides a technical solution: a rapid freezing device for cold-extracted instant tea, see Figures 1 to 3 , including a base 1, the top of the base 1 is provided with a freezer compartment 2, the freezer compartment 2 is provided with a temperature sensor, a humidity sensor and an air pressure sensor, and the side wall of the base 1 is provided with a personnel entry and exit operation door 3. A control electrical cabinet 5 is arranged on the side of the personnel entering and exiting the operation door 3. The top of the base 1 and the side wall of the side adjacent to the control electrical cabinet 5 are provided with a liquid connecting with the interior of the freezer compartment 2. Nitrogen tank 4, the side wall of the other side adjacent to the freezing chamber 2 and the control cabinet 5 is provided with an electronically controlled switch door tea liquid inlet and outlet 201, and a refrigerator 7 is provided at the top of the tea liquid inlet and ...

Embodiment 2

[0043] The present embodiment provides a processing method of cold-extracted instant tea, and the specific operations are as follows:

[0044] (1) For the baking of raw materials, select fresh tea leaves with fresh color, high aroma and pure taste, first place them in a dryer for baking, bake at 120-180°C for 10-30 minutes, and then cool to room temperature.

[0045] (2) Infiltration with water: put the tea leaves obtained in step (1) into a percolation column, add deionized water with 1 to 10 times the quality of the tea leaves, and control the water temperature to be between 0 and 45°C.

[0046] (3) percolation: pass deionized water at 0 to 45° C. of 1 to 5 times the quality of tea leaves into the percolation column of step (2), collect the feed liquid at the percolation outlet, and control the temperature of the feed liquid from 0 to 45 ℃; then pass the feed liquid into the percolation column, and carry out circulatory percolation for 60-180 minutes.

[0047] (4) Filtratio...

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Abstract

The invention discloses a preparation method of cold-extracted instant tea and special freezing equipment, and belongs to the technical field of instant tea preparation methods, high-quality tea is baked firstly, then ice water is added for circulating percolation extraction, filtration and ultrafiltration, bagging, ultra-high pressure sterilization, traying and rapid pushing into a freezer are performed, liquid nitrogen is used for rapid cooling, and the cold-extracted instant tea is obtained. After being completely frozen, the tea powder is put into a freeze-drying machine to be freeze-dried, so that the high-quality cold-extracted instant tea powder is obtained. The freezing equipment comprises a base, and a freezing chamber, a liquid nitrogen tank, a temperature control device, an electric control device, a tray with a net-shaped cold conduction grid and the like are arranged at the top end of the base. The method is characterized in that ice water is used for performing circulating percolation extraction, and then filtration clarification, high-speed quick freezing and freeze drying are performed to prepare the high-quality instant tea. The instant tea prepared by the method has pure aroma and mellow taste, and can be completely dissolved in ice water. According to the freezing equipment, tea milk is effectively prevented from being formed through the combination of the tray with the special net-shaped cold conduction grid and the liquid nitrogen.

Description

technical field [0001] The invention relates to the technical field of instant tea preparation, in particular to a preparation method of cold-extracted instant tea and special freezing equipment. Background technique [0002] Instant tea is a solid beverage tea that can be quickly dissolved in water. Using finished tea, semi-finished tea, tea by-products or fresh leaves as raw materials, through extraction, filtration, concentration, drying and other processes, it is processed into a new type of granule, powder or small flake that is easily soluble in water and has no tea residue. The beverage has the advantages of being convenient to brew and carrying, and free of pesticide residues. It is divided into two categories: pure tea and seasoned tea. Common pure teas include instant black tea, instant green tea, instant Tieguanyin, instant oolong tea, instant jasmine tea, instant Pu-erh tea, etc. The blended teas include sugar-sweetened black tea, green tea, oolong tea, lemon b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23F3/06A23F3/16
CPCA23F3/06A23F3/16
Inventor 岳鹏翔肖志剑谢苏平
Owner 山东泰乐源农业科技有限公司
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