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Method for preparing natural tea essence

A technology of tea and essence, which is applied in the field of preparation of natural tea essence, can solve the problems of waste of biological resources, pollution of the environment, etc., and achieve the effects of prolonging the service life, uniform particle size, and expanding the scope of application

Inactive Publication Date: 2019-05-17
浙江亚林生物科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is estimated that China produces more than 5 million tons of tea waste every year. However, only a small part of these wastes are used rationally, and most of them are treated as agricultural waste, which is likely to cause environmental pollution and a huge waste of biological resources.

Method used

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  • Method for preparing natural tea essence
  • Method for preparing natural tea essence
  • Method for preparing natural tea essence

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preparation example Construction

[0032] A preparation method of natural tea essence, comprising the steps of:

[0033] Superfine crushing: After the collected tea leaves are removed and screened, they are freeze-dried and broken in a low-temperature jet mill. The temperature of the low-temperature jet mill is controlled at 0-10°C, and the compressed air intake pressure is 0.80-1.00MPa , the frequency of the induced draft fan is 40-45Hz, the frequency of the grading wheel is 80-100Hz, the frequency of the feeding motor is 10-15Hz, and the ultrafine powder of tea is obtained through ultrafine crushing and wall breaking. Before the low-temperature airflow pulverizes and breaks the wall, the tea leaves are freeze-dried first, the tea leaves are easier to pulverize, and the heat-unstable active ingredients are retained, and the nutrition is richer; the low-temperature airflow pulverizes and breaks the walls, so that the active ingredients in the tea can be obtained Fully released, thereby improving the extraction ...

Embodiment 1

[0041] The preparation process of tea essence is as follows:

[0042] After the collected tea leaves are removed and screened, the raw materials are pre-dried to less than 80% moisture and then packed into trays. The tray weight is 6kg / m 2 About 2cm in thickness, gradually lower the temperature to -50°C for pre-freezing, vacuumize the system until the absolute pressure of the system is 22Pa, start heating to 5°C, sublimate and dry for 20 hours, and make the water content below 8% before exporting material. After the freeze-drying treatment, add the freeze-dried tea leaves to the hopper of the low-temperature airflow pulverizer, control the temperature at 5°C, the compressed air inlet pressure is 0.90MPa, the frequency of the induced draft fan is 42Hz, the frequency of the classifying wheel is 90Hz, and the frequency of the feeding motor is 13Hz. Finely crushed to break the wall. The mesh number of ultra-finely pulverized tea leaves can reach 400 mesh, and the wall breaking rat...

Embodiment 2

[0047] The preparation process of tea essence is as follows:

[0048] After the collected tea leaves are removed and screened, the raw materials are pre-dried to less than 80% moisture and then packed into trays. The tray weight is 6kg / m 2 About 2cm in thickness, gradually lower the temperature to -50°C for pre-freezing, vacuumize the system until the absolute pressure of the system is 22Pa, start heating to 5°C, sublimate and dry for 20 hours, and make the water content below 8% before exporting material. After the freeze-drying treatment, add the freeze-dried tea leaves to the hopper of the low-temperature airflow pulverizer, control the temperature at 5°C, the compressed air inlet pressure is 0.90MPa, the frequency of the induced draft fan is 42Hz, the frequency of the classifying wheel is 90Hz, and the frequency of the feeding motor is 13Hz. Finely crushed to break the wall. The mesh number of ultra-finely pulverized tea leaves can reach 400 mesh, and the wall breaking r...

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Abstract

The invention discloses a method for preparing a natural tea essence. The method comprises the following steps of ultrafine pulverization, wherein collected tea leaves are subjected to impurity removal and screening, and high-speed blending is conducted in a low-temperature jet pulverizing machine to obtain tea leaf ultrafine powder; tea leaf ultrafine powder enzymolysis, wherein the tea leaf ultrafine powder is enzymatically hydrolyzed with a curing enzyme to obtain an enzymatic hydrolysate; supercritical CO2 extraction, wherein the enzymatic hydrolysate is placed in a supercritical device, an entrainer is added, and an extracted product is separated by extraction for 2-4 hours; microencapsulation, wherein an emulsifier, a stabilizer and a wall material raw material are added to the extracted product to carry out the microencapsulation to obtain microcapsules, and the microcapsules are spray-dried to make the tea essence; the method utilizes an advanced technology and suitable processconditions, the extraction rate of active ingredients is improved, the essence quality is excellent, the release of aroma substances is effectively controlled, the stability of the essence is increased, and the service life of the essence is prolonged.

Description

technical field [0001] The invention relates to food industrial production, in particular to a preparation method of natural tea essence. Background technique [0002] At present, domestic tea processing technology content, product quality and comprehensive processing depth are all low, and the overall economic benefits of the tea industry have not yet been fully utilized. It is estimated that more than 5 million tons of tea waste are produced in China every year. However, only a small part of these wastes has been rationally used, and most of them are treated as agricultural waste, which is likely to cause environmental pollution and a huge waste of biological resources. Through the comprehensive utilization of tea leaves and their wastes, the use of different preparation technologies to fully develop their functional components, process them into different tea products, and process the wastes generated during the tea development process, tea resources can be used efficient...

Claims

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Application Information

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IPC IPC(8): A23F3/42A23F3/40A23P10/30C11B9/00
Inventor 戴承恩李海龙何小平郑芬芬竺画柳
Owner 浙江亚林生物科技股份有限公司
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