SU1676570A1 - Method and device for recovering tea extract - Google Patents

Abstract

The invention relates to the food industry, in particular, to methods for preparing tea extract and to extractors. The purpose of the invention is to increase the yield and preserve the flavor. The raw materials are extracted with cold distilled water of 18-21 ° C taken in the ratio of raw materials: water 1: (9-11). by periodic forced reciprocating flow of the extract through the layer of raw material for 45-50 minutes with a frequency of 0.5 minutes The method is carried out using a device. To do this, in a device consisting of a cone-shaped vessel, in the lower part of which there is a mesh insert, a tube located along the vertical axis of the vessel, a vacuum chamber with a three-positioning tap is located in the upper part of the tube, and the cone-shaped tank is equipped with a free-side grille. The combined use of a vacuum chamber and a free-standing grille allows for an increased yield. 2 sec. f-ly, 1 ill. yo

Description

The invention relates to the food industry, in particular to the technology of tea production.

The aim of the invention is to increase the yield of the target product and preserve the aroma of tea.

Extraction of raw materials is carried out with cold distilled water with a temperature of 18-21 ° C, taken in the ratio: raw materials: water 1: 9-11, by periodically forced reciprocating flow of the extractant through the layer of raw materials for 45-50 minutes with a frequency of 0 ,5 minutes

Example 1. Raw materials are loaded into the extractor, extraction is carried out with cold distilled water with a temperature of 18 ° C, taken at a ratio of 1:11, by periodically forced reciprocating flow of the extractant through the layer of raw material for 45 minutes with a frequency of 0.5 minutes, then the solution is freeze-dried. In the extraction process, water covers the raw material. Yield 24% dry matter (r.v.) while maintaining the aroma of tea.

Example 2. Raw materials are loaded into the extractor, extraction is carried out with cold distilled water at a temperature of 20 ° C taken in

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at a ratio of 1:10, by periodically forcing the extractant through the raw material layer for 47 minutes at a frequency of 0.65 minutes, then the solution is freeze-dried. In the extraction process, water covers the raw material. The yield of 24% dry matter with preservation of aroma tea.

Example 3. Raw materials are loaded into the extractor, extraction is carried out with cold distilled water with t 21 ° C. taken in a ratio of 1: 9, by periodically forcing the extractant through the layer of raw material for 50 minutes at a frequency of 0.5 minutes, then the solution is freeze-dried. In the extraction process, water covers the raw material. Yield 24% r.v. preserving the aroma of ca.

The drawing shows a diagram of the proposed device.

The device contains a cone-shaped container 1, in the lower part of which there is a grid insert 2, a connecting tube 3 located along the vertical axis of the vessel, in the upper part of which is a vacuum chamber 4 connected to a vacuum with a three-position tap

5, the cone-shaped vessel is provided with a free-standing grate 6. Sharing a vacuum chamber and a free-standing grate allows for an increased yield.

The device works as follows.

50 g of standard tea is loaded into the cone-shaped container 1; to prevent the floating of the container 1, a free-standing grille is installed on top of the container 1

6, then pour the tank with cold distilled water with t 18-21 ° C so that the water covers dry tea, the volume of the vacuum chamber 4 should correspond to the volume of the working area of the cone-shaped tank 1. When the vacuum is activated by the three-position tap 5, water through the connecting tube 3 , the mesh insert 2 is fed into the vacuum chamber. The delivery time of the extractant to the vacuum chamber is 5-6 seconds, then at

switching on the atmosphere with a three-position valve 5, the extractant from the vacuum chambers 4 goes by gravity to the cone-shaped container 1. After 0.5 min the described cycle

the transfer of the extractant is repeated, and the whole process takes 45-50 minutes.

After carrying out an exhaustive extraction of raw materials, the raw materials in the extractor are filled with hot water with

t 95-97 ° C, and extraction is carried out in the same way for 10-15 minutes. The solution contains mainly caffeine approximately 2.0-2.5%. Then mix the solutions and, freeze dried,

The proposed method makes it possible to obtain tea extract with different caffeine content.

Claims (2)

1. A method of producing an extract of tea, which involves forcing the extractant through the extracted material, characterized in that, in order to increase the yield of the target product and preserve the aroma, the forced movement of the extractant is carried out by creating a periodic reciprocating movement with a frequency of 0.5 min for 45-50 min, while in As an extractant, distilled water is taken at a temperature of 18-21 ° C and ratios with an extractable material of 9: 1-11: 1. 2. Device for extracting tea, including a cone-shaped container with a centrally placed tube connecting the mesh insert located in the lower part of the container, and a camera mounted on top, characterized in that In order to increase the yield of the target product and preserve flavor, it is equipped with a lattice freely placed in the tank to prevent ascent, the chamber is placed above the tank and connected to a vacuum source through a three-position valve, the chamber volume corresponding to the volume of the working zone of the tank.