Patents
Literature
Patsnap Copilot is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Patsnap Copilot

656 results about "Theanine" patented technology

Theanine /ˈθiːəniːn/, also known as L-γ-glutamylethylamide and N⁵-ethyl-L-glutamine, is an amino acid analogue of the proteinogenic amino acids L-glutamate and L-glutamine and is found primarily in particular plant and fungal species. It was discovered as a constituent of green tea in 1949; in 1950, it was isolated from gyokuro leaves. Theanine provides a unique brothy or savory (umami) flavor to green tea infusions.

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

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.
Owner:张守政

Method for comprehensively extracting effective ingredients in tea

The invention relates to a method for comprehensively extracting effective ingredients in tea. The method comprises the following steps of: with a faintly acidic water solution as a main extraction solvent and a certain amount of organic solvent as an auxiliary extraction solvent, carrying out step-by-step extraction on water extracts to obtain four effective ingredients, namely tea polyphenol, caffeine, tea polysaccharide and theanine; and meanwhile, extracting tea protein from tea residues by using an alkali dissolution and acid deposition method. According to the method, as water is used as the main solvent, the cost is low, the reactions are mild and active ingredients are favorably preserved; as a certain amount of organic solvent is used as the auxiliary extraction solvent, the problems of overhigh cost and product pollution caused by use of a large amount of organic solvents are solved; meanwhile, five effective ingredients, namely the tea polyphenol, the tea polysaccharide, the caffeine, the theanine and the tea protein are extracted, and therefore high extraction rate, high purity and high utilization rate of tea are achieved; the solvents are recycled in the extraction process, so that the preparation cost is reduced; and no alkali and acid waste liquor is discharged in the overall process, and therefore the method is environment-friendly. The overall preparation flow is high in efficiency and low in cost, and therefore the method has a favorable application value.
Owner:TIANJIN UNIV
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