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Production method of low fluorine, aluminium instant crushed red tea

A production method and technology of crushed red tea, applied in the fields of tea, tea treatment before extraction, food science, etc., can solve problems such as fluorine and aluminum content safety issues that are not considered, achieve good social benefits and economic value, maintain flavor, and process simple effect

Inactive Publication Date: 2006-07-19
CENT SOUTH UNIV
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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 production method of low-fluorine and low-aluminum red crushed tea, which can selectively reduce The high amount of fluorine and aluminum in the raw materials of black crushed tea and black tea bags will not affect the inherent flavor of black crushed tea and black tea bags, and the process is simple and low cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0009] Example 1: After drying 100 kilograms of fresh tea leaves, place them in a 150-liter hot water treatment pool with a water temperature of 100°C. Start the agitator and keep it for 30 minutes. Let the site stand and cool down to normal temperature. When the water content of the raw material reaches 65%, use the rotor kneading and cutting machine to wither for 6 hours, use the kneading machine to knead the strips for 35 minutes, deblock and sieve, and then enter the rotor kneading and cutting machine and triple C.T.C kneading Cutting machine combined kneading and cutting, the time is 25 seconds. The raw materials after withering, kneading and cutting are placed in the fermentation stage, and the temperature of the raw materials is controlled at 26° C. for 40 minutes during fermentation. Then the raw material enters the dryer, and the thickness of the raw material is spread out at 1.30kg / m 2 , the air inlet temperature is 110°C, bake until the moisture content of the raw ...

example 2

[0010] Example 2: After drying 100 kilograms of fresh tea leaves, place them in a 200-liter hot water treatment pool with a water temperature of 70°C. Start the agitator and keep it for 50 minutes. The raw materials are transported to the vibrating screen conveyor belt and sent to the work site Cool to room temperature. When the water content of the raw material reaches 65%, use the rotor kneading and cutting machine to wither for 8 hours, use the kneading machine to knead the strips for 30 minutes, deblock and sieve, and then enter the rotor kneading and cutting machine and triple C.T.C kneading and cutting Machine combination kneading and cutting, the time is 20 seconds. The raw materials after withering, kneading and cutting are placed in the fermentation stage, and the temperature of the raw materials is controlled at 28° C. for 35 minutes during fermentation. Then the raw material enters the dryer, and the thickness of the raw material is spread out at 1.30kg / m 2 , the a...

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PUM

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Abstract

A process for preparing an instant black tea with low concentration of fluorine and aluminum, comprising the following steps: 1) treatment to reduce the fluorine and aluminum concentration, laying the picked tea on working field, putting tea into hot water pool after being dried, the water temperature being 50-120 Deg. C, and the ratio between water and tea being 1-100: 0.5-80, stirring for 5-50 minutes with stirrer, stewing, cooling to room temperature and conveying it to vibrating screen cloth conveyor; 2) preparing black tea. The invention is characterized in that it reduces the fluorine and aluminum concentration without influencing original local flavor and quality.

Description

technical field [0001] The invention belongs to the processing method of tea. It specifically relates to a production method of low-fluorine and low-aluminum red crushed tea. Background technique [0002] Tea tree is a fluorine-rich plant. It can selectively absorb fluorine and aluminum from the soil and the atmosphere, and store them mainly in the leaves. The older the leaves, the higher the fluorine and aluminum content. Broken red tea is usually processed from raw tea leaves. Studies have shown that its fluorine and aluminum content is relatively high. Long-term consumption of such broken red tea and black tea bags can lead to chronic fluorosis, such as dental fluorosis and skeletal fluorosis. Research reports from China and other countries have confirmed the existence of tea-type fluorosis. Although the mechanism of the excessive intake of aluminum on the human body is not very clear, it is generally believed that it is an important factor affecting senile dementia a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23F3/20A23F3/06
Inventor 曹进刘箭卫易娟
Owner CENT SOUTH UNIV