摘要:
Provided is a process for producing a product enriched in theaflavins. The process comprises contacting a first and a second material to form a reaction mixture with a specific weight ratio of catechins to theaflavins, fermenting the reaction mixture, and then recovering the product from the reaction mixture. The process is particularly suitable for producing leaf tea products with high levels of theaflavins.
摘要:
The present invention relates to a process for producing an enzyme-treated tea extract, which comprises allowing at least one selected from an enzyme and/or a group of enzymes capable of producing a green aroma compound to act on a tea extract, a tea slurry and/or a tea leaf; and a process for producing an enzyme-treated natural tea aroma and an enzyme-treated natural tea aroma concentrated extract, which further comprises collecting a tea aroma from the enzyme-treated tea extract.
摘要:
An object is to provide a preparation process of a green tea extract having a high non-polymer catechin concentration and tasting good with less bitterness and less astringency. The present invention relates to a preparation process of a green tea extract, which comprises subjecting an enzyme-inactivated raw tea leaves to CTC processing, drying the tea leaves until the water content thereof becomes 20 wt. % or less, and extracting the tea leaves while setting the weight ratio of an extraction solvent to the tea leaves to be extracted to 30 or less.
摘要:
A cold water infusible tea leaf product is shown which brews in cold water to produce an iced tea beverage with the color and flavor of iced teas prepared by hot brewing methods. The product when brewed in water at about 15° C. for about 5 minutes at a water to tea ratio of 100 water to 1 tea has a cold water infusion Hunter L Value of about 25 to 45; a Hunter “a” value of about 24 to 34; a Hunter haze value of less than 40 and at least 0.15% soluble tea solids.
摘要:
A process for manufacturing a black leaf tea that is infusible in hot or cold water. The process involves macerating freshly plucked tea leaves, allowing them to ferment, firing the leaves to arrest fermentation and then drying them to yield black leaf tea, wherein the tea leaves are treated with a solubilising compound selected ascorbic acid, dehydroascorbic acid, 1-scorbamic acid, 5-phenyl-3,4-diketo-gamma-butyrolactone (4-phenyl-2,3-diketo-gamma-butyrolactone) or their salts and mixtures thereof in an amount that is sufficient for the black leaf tea to be soluble in water at 5 to 100° C.
摘要:
A process for manufacturing black leaf tea that looks and feels like orthodox processed tea but has the liquor characteristics of a fuller fermented CTC processed tea. The process involves withering a first supply of freshly plucked tea leaves, macerating the withered leaves, allowing the macerated withered leaves to ferment to produce macerated dhool, withering a second supply of freshly plucked tea leaves, mixing the macerated dhool obtained from the first supply of leaves with the withered leaves obtained from the second supply of leaves, rolling the mixture, allowing the rolled mixture to ferment, and drying the fermented mixture to yield black leaf tea.
摘要:
Green tea, and specifically fresh green tea leaf, is comminuted, placed in aqueous suspension, treated with tannase, and thereafter converted to black tea to provide black tea extracts of improved characteristics.