Process for extracting tea polyphenol, theanine, tea polysaccharide and tea pigment from tea

A technology of theanine and tea polyphenols is applied in the field of extracting tea polyphenols, theanine, tea polysaccharides and tea pigments from tea leaves, which can solve the problem that tea resources are not fully utilized, the yield is low, and the purity of tea polyphenols is high. problem, to achieve the effect of significant biological activity, high product purity and simple method

Inactive Publication Date: 2006-09-27
张守政
View PDF2 Cites 57 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] According to public patent reports at home and abroad, the methods for extracting functional components such as tea polyphenols from tea include ion precipitation, solvent extraction, resin adsorption and carbon dioxide supercritical fluid extraction, but there is no solvent extraction technology, resin A one-time method for extracting tea polyphenols, theanine, tea polysaccharides, tea pigments, and caffeine from tea leaves by combining advanced technologies and equip

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Process for extracting tea polyphenol, theanine, tea polysaccharide and tea pigment from tea

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] According to the process step example of the process flow chart of the extraction method of the present invention, describe in detail.

[0025] 1. Weigh 2000 grams of green tea, crush it to 20 meshes, extract with 40 liters of 85°C deionized water at constant temperature and dynamic 6-stage countercurrent leaching, and use 5% citric acid aqueous solution to adjust the pH value to 6.5-6.8. The leaching time is 90 minutes. Solid-liquid separation to obtain the extract, quick cooling to a temperature below 35°C, and filtering through a 120-200-mesh industrial filter and a microfilter with a pore size of 0.1-5um to obtain 35.6 liters of refined extract. The separated tea dregs can be used as feed or organic food after drying. Fat;

[0026] 2, the described refined extract is intercepted pectin, protein and lipopolysaccharide with the ultrafiltration membrane of cutting molecular weight 5~100,000, and the extracting solution that ultrafiltration sees through is concentrated ...

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 discloses an extracting polyphenol, theanine, tea polysaccharide and tea pigment method from tea, which is characterized by the following: using deionized water for lixiviating tea at constant temperature with continuous flow upstream at multi-speed; adopting microstrainer to dislodge the foreign matter of raffinate; using hyperfiltration for putting-off pectin and protein; concentrating by hyperfiltration and dehydration; extracting tea polyphenol by acetic acid ethyl ester and recovering dissolvant; stripping caffeine of extracting extract phase, pesticide residue and dissolvant by CO2 supercritical fluid; getting tea polyphenol by low-temperature nitrogen spray-drying; using alcohol separation and low temperation vacuum drying by hyperfiltration trapped fluid to prepare tea polysaccharide; separating alcohol recrystallization by basic copper carbonate and hydrogen sulfide to get theanine; using enzymatic oxidation and alkaline air to oxygenate remain polyphenols substance of liquid phantom; getting tea pigment by hyperfiltration dehydration compression and vacuum drying; merging caffeine form carbon dioxide above-critical fluid and caffeine from carrene; recovering dissolvent; using deionized water for washing; obtaining caffeine by recrystallization vacuum drying.

Description

technical field [0001] The invention discloses a method for extracting tea polyphenols, theanine, tea polysaccharides and tea pigments from tea leaves. Background technique [0002] Scientific research at home and abroad has proved that tea polyphenols have the functions of scavenging free radicals in the human body, improving immunity, anti-oxidation, anti-aging, anti-radiation, anti-cancer and lowering blood fat; Polysaccharides have the functions of lowering blood sugar and enhancing immunity; tea pigment has the functions of anticoagulant, antithrombotic and preventing atherosclerosis; caffeine has the functions of treating asthma and eliminating fatigue. Therefore, the functional components of tea have been widely used in the fields of medicine, health care and food, and have a huge potential market. The comprehensive development of functional components of tea is an effective way to promote human health and solve the outlet for middle and low-grade tea in our country....

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
IPC IPC(8): C07D311/04C07D311/62C07C237/06C07C231/24C08B37/00
CPCY02P20/54
Inventor 张守政
Owner 张守政
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