Green tea extract as well as preparation method and application thereof

A technology of green tea extract and green tea, applied in the field of tobacco spices

Inactive Publication Date: 2014-12-03
广东绿环生物科技股份有限公司
View PDF5 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the continuous extraction method of low-concentration ethanol is mostly used in China to prepare green tea extract, but this method has two major disadvantages: 1. The extraction time is long, the yield is low, and it is accompanied by the loss of part of the natural tea aroma; 2. In the green tea extract In addition to aroma components, it also contains some protein, impurities and other components, which restricts the application of the product. Therefore, how to extract the effective aroma components in green tea and separate and remove the impurities has become the development trend of tea flavors.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Step 1: Add 1000g of green tea leaves to the ultrasonic extraction tank, add a mixed solvent with a weight ratio of ethanol: propylene glycol: water: malic acid = 30:10:58:2, the material-liquid ratio is 1:10, turn on the equipment, ultrasonic frequency At 25kHz, the temperature was kept at 75°C, the extraction time was 40 minutes, the operation was stopped, the extraction solution was poured out after a little cooling, filtered with a filter screen, and the extraction solution was collected; extract;

[0021] Step 2: Combine the two extracts, concentrate on a rotary evaporator, the concentration temperature is 70°C, and the vacuum degree is 0.005Mpa;

[0022] Step 3: dilute the obtained concentrate with 10 times of distilled water;

[0023] Step 4: Pass the diluted solution processed in Step 3 through the resin column at a flow rate of 1.5 BV / h. After the adsorption, the resin column was flushed with 5 L of distilled water at a flow rate of 1.5 BV / h. After rinsing, ...

Embodiment 2

[0026] Step 1: Add 1000g of green tea leaves into the ultrasonic extraction tank, add a mixed solvent with a weight ratio of ethanol: propylene glycol: water: malic acid = 20:20:50:3, the material-liquid ratio is 1:6, turn on the equipment, ultrasonic frequency At 20kHz, the temperature was kept at 80°C, the extraction time was 30 minutes, the operation was stopped, the extraction solution was poured out after a little cooling, filtered with a filter screen, and the extraction solution was collected; extract;

[0027] Step 2: Combine the two extracts, concentrate on a rotary evaporator, the concentration temperature is 65°C, and the vacuum degree is 0.01Mpa;

[0028] Step 3: dilute the obtained concentrate with 20 times of distilled water;

[0029] Step 4: Pass the diluted solution processed in Step 3 through the resin column at a flow rate of 1.5 BV / h. After the adsorption, the resin column was flushed with 5 L of distilled water at a flow rate of 1.5 BV / h. After rinsing, ...

Embodiment 3

[0033] Step 1: Add 1000g of green tea leaves to the ultrasonic extraction tank, add a mixed solvent with a weight ratio of ethanol: propylene glycol: water: malic acid = 30:20:60:4, the material-liquid ratio is 1:15, turn on the equipment, ultrasonic frequency At 200kHz, the temperature was kept at 60 °C, the extraction time was 60 minutes, the operation was stopped, the extraction solution was poured out after a little cooling, filtered with a filter screen, and the extraction solution was collected; extract;

[0034] Step 2: Combine the two extracts, concentrate on a rotary evaporator, the concentration temperature is 85°C, and the vacuum degree is 0.007Mpa;

[0035] Step 3: dilute the obtained concentrate with 15 times of distilled water;

[0036] Step 4: Pass the diluted solution processed in Step 3 through the resin column at a flow rate of 1.5 BV / h. After the adsorption, the resin column was flushed with 5 L of distilled water at a flow rate of 1.5 BV / h. After rinsing...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a green tea extract as well as a preparation method and application of the green tea extract. The green tea extract is prepared by combining ultrasonic extraction with an elution separation method by adopting macroporous resin. The preparation method comprises the following steps of preparing green tea leaves, carrying out ultrasonic extraction, elution separation by adopting macroporous resin, concentrating and obtaining the extract. After the green tea extract is added into tobacco shreds of cigarettes, the aroma quality of the cigarettes is promoted, the aroma of the cigarettes is pure, mild and fine, and the smoothness of smoke and the aftertaste are obviously improved. Compared with the traditional extracting method, green tea is extracted ultrasonically by using a mixed solvent, so that the use amount of alcohol is greatly reduced, the heating time is reduced, and the extraction rate is obviously improved; by combining with the elution separation by adopting macroporous resin, the content of components in the extract, which have negative influences on smoke of cigarettes, is reduced and the quality and purity of the active ingredients are improved. The preparation method has the advantages that the equipment is easy to operate, no pollution is caused, an improved extraction method with good effect is provided for preparing the green tea extract, and particularly can be favorably applied to tobacco production industry.

Description

technical field [0001] The invention belongs to the field of spices for tobacco and relates to the extraction and application of tea leaves in natural spices, in particular to a green tea extract and its preparation method and application. technical background [0002] China is the hometown of tea. The efficacy of tea is determined by its own specific chemical composition. Eliminate excess free radicals in the human body, remove fat and lose weight, lower blood sugar, blood fat and cholesterol, prevent cardiovascular diseases, inhibit tumors and other pharmacological functions, and have important applications in food processing, medicine, daily chemical and other fields. [0003] As one of the main teas in China, green tea ranks first among the six primary teas in the country. Green tea is made without fermentation, so it retains more natural substances of fresh leaves, and contains more nutrients such as tea polyphenols, catechins, chlorophyll, caffeine, amino acids, and v...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): A23F3/16A24B3/12
Inventor 李炯殷飞韩婷
Owner 广东绿环生物科技股份有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap