摘要:
A process for selectively removing caffeine from a caffeine-containing catechin composition, which includes dissolving the caffeine-containing catechin composition in a 9/1 to 1/9 by weight mixed solution of an organic solvent and water, and then bringing the resultant solution into contact with activated carbon alone or with activated carbon and also acid clay or activated clay; and a packaged beverage containing such a decaffeinated composition.
摘要:
A process for selectively removing caffeine from a caffeine-containing catechin composition, which includes dissolving the caffeine-containing catechin composition in a 9/1 to 1/9 by weight mixed solution of an organic solvent and water, and then bringing the resultant solution into contact with activated carbon alone or with activated carbon and also acid clay or activated clay; and a packaged beverage containing such a decaffeinated composition.
摘要:
A process for selectively removing caffeine from a caffeine-containing catechin composition, which comprises dissolving the caffeine-containing catechin composition in a 9/1 to 1/9 by weight mixed solution of an organic solvent and water, and then bringing the resultant solution into contact with activated carbon alone or with activated carbon and also acid clay or activated clay; and a packaged beverage containing such a decaffeinated composition.
摘要:
This invention relates to a process for producing a green tea flavor by extracting it from green tea leaves with water cooler than 10° C., and also to a beverage with the flavor obtained by the process and added therein. This invention also relates to a process for producing a dried green tea polyphenol by subjecting green tea leaves to a first extraction with water cooler than 10° C. and then to a second extraction with warm water of 50° C. or higher, and drying an extract of the second extraction, and also with a process for producing a beverage by adding a green tea polyphenol obtained by the process.
摘要:
This invention relates to a process for producing a green tea flavor by extracting it from green tea leaves with water cooler than 10° C., and also to a beverage with the flavor obtained by the process and added therein. This invention also relates to a process for producing a dried green tea polyphenol by subjecting green tea leaves to a first extraction with water cooler than 10° C. and then to a second extraction with warm water of 50° C. or higher, and drying an extract of the second extraction, and also with a process for producing a beverage by adding a green tea polyphenol obtained by the process.
摘要:
The present invention relates to a method of removing hydroxyhydroquinone from an aqueous solution containing hydroxyhydroquinone and caffeoylquinic acids by bringing the aqueous solution into contact with an acid clay having a SiO2/Al2O3 ratio of from 3 to 5. The present invention enables selective removal of hydroxyhydroquinone from an aqueous solution containing hydroxyhydroquinone and caffeoylquinic acids.
摘要翻译:本发明涉及通过使水溶液与含有SiO 2 / Al 2的酸性粘土接触的方法从含羟基氢醌和咖啡酰奎宁酸的水溶液中除去羟基氢醌 本发明能够从含羟基氢醌和咖啡酰奎宁酸的水溶液中选择性除去羟基氢醌。
摘要:
A process for producing a tea extract containing non-polymer catechins, which includes immersing unfermented tea leaves in ethanol or an ethanol-water solution having an ethanol concentration of from 85 to 99.5 vol % to obtain unfermented tea leaves having a percentage catechin residue of at least 80 wt % based on a catechin content of the unfermented tea leaves before the immersion in the ethanol or ethanol-water solution, and then extracting the unfermented tea leaves with warm water or hot water. The highly-efficient extraction of non-polymer catechins makes it possible to obtain a tea extract, which has an improved taste and does not produce sediment when added to beverages.
摘要:
A process for producing a tea extract containing non-polymer catechins, which includes immersing unfermented tea leaves in ethanol or an ethanol-water solution having an ethanol concentration of from 85 to 99.5 vol % to obtain unfermented tea leaves having a percentage catechin residue of at least 80 wt % based on a catechin content of the unfermented tea leaves before the immersion in the ethanol or ethanol-water solution, and then extracting the unfermented tea leaves with warm water or hot water. The highly-efficient extraction of non-polymer catechins makes it possible to obtain a tea extract, which has an improved taste and does not produce sediment when added to beverages.
摘要:
The present invention provides a method for obtaining a chlorogenic acid composition which contains high concentration of chlorogenic acids and a reduced amount of caffeine at a high yield.A method of producing a chlorogenic acid composition, which comprises allowing a water-soluble composition extracted from raw coffee beans or roasted coffee beans to be adsorbed to a column filled with an adsorbent and then eluting a chlorogenic acid composition by passing a 0.5 to 20 vol % ethanol aqueous solution.
摘要:
The present invention provides a method for obtaining a chlorogenic acid composition which contains high concentration of chlorogenic acids and a reduced amount of caffeine at a high yield.A method of producing a chlorogenic acid composition, which comprises allowing a water-soluble composition extracted from raw coffee beans or roasted coffee beans to be adsorbed to a column filled with an adsorbent and then eluting a chlorogenic acid composition by passing a 0.5 to 20 vol % ethanol aqueous solution.