Abstract: A polyphenol composition derived from Camellia sinensis and contains flavonol aglycones and flavonol glycosides, in a weight ratio [(B)/(A)] of the following total contents (B) to (A) is from 0.01 to 18, wherein (A) total content of the flavonol aglycones contained in solids of the polyphenol composition after hydrolysis as measured by high-performance liquid chromatography, and (B) total content of the polyphenols contained in solids of the polyphenol composition as measured by the ferrous tartrate method.

Abstract: A polyphenol composition derived from Camellia sinensis and contains flavonol aglycones and flavonol glycosides, in a weight ratio [(B)/(A)] of the following total contents (B) to (A) is from 0.01 to 18, wherein (A) total content of the flavonol aglycones contained in solids of the polyphenol composition after hydrolysis as measured by high-performance liquid chromatography, and (B) total content of the polyphenols contained in solids of the polyphenol composition as measured by the ferrous tartrate method.

Abstract: A polyphenol composition derived from Camellia sinensis and contains flavonol aglycones and flavonol glycosides, in a weight ratio [(B)/(A)] of the following total contents (B) to (A) is from 0.01 to 18, wherein (A) total content of the flavonol aglycones contained in solids of the polyphenol composition after hydrolysis as measured by high-performance liquid chromatography, and (B) total content of the polyphenols contained in solids of the polyphenol composition as measured by the ferrous tartrate method.

Abstract: Provided are a preparation process of a purified green-tea extract capable of easily and efficiently removing a turbidity component contained in a green tea extract; a purified green-tea extract prepared by the preparation process; and a packaged beverage containing the purified green-tea extract. The preparation process of a purified green-tea extract containing, in the solid content thereof, from 36 to 99 mass % of non-polymer catechins comprises bringing a green tea extract into contact with a mixed solution containing an organic solvent and water at a mass ratio of from 65/35 to 97/3 and active carbon and/or acid clay or active clay, adjusting the organic solvent/water mass ratio of the resulting solution to from 0/100 to 85/15, and then separating the turbidity component thus separated.

Abstract: To provide a packaged high-catechin beverage in which a low-caffeine green tea extract is added. A packaged beverage containing from 0.03 to 1.0 wt % of non-polymer catechins, in which a low-caffeine green tea extract obtained by a method of brining a green tea extract into contact with a 91/9 to 97/3 by weight mixture of an organic solvent and water, activated carbon, and acid clay or activated clay is added.

Abstract: Provided is a polyphenol composition derived from Camellia sinensis and having reduced harshness. The polyphenol composition according to the invention is derived from Camellia sinensis and contains flavonol aglycones and flavonol glycosides. A weight ratio [(B)/(A)] of the following total contents (B) to (A) is from 0.01 to 18: (A) total content of the flavonol aglycones contained in solids of the polyphenol composition after hydrolysis as measured by high-performance liquid chromatography, and (B) total content of the polyphenols contained in solids of the polyphenol composition as measured by the ferrous tartrate method.

Abstract: To provide a packaged high-catechin beverage in which a low-caffeine green tea extract is added. A packaged beverage containing from 0.03 to 1.0 wt % of non-polymer catechins, in which a low-caffeine green tea extract obtained by a method of brining a green tea extract into contact with a 91/9 to 97/3 by weight mixture of an organic solvent and water, activated carbon, and acid clay or activated clay is added.

Abstract: Provided is a packaged non-tea beverage, excellent in the storage stability of the flavor, color tone and content of catechins. The packaged non-tea beverage, which includes a purified green tea extract having a ratio of gallate-type catechins in non-polymer catechins of less than 50% by mass, contains (A) 0.072 to 1.2% by mass of non-polymer catechins and (B) 0.001 to 12 mg/100 mL of gallic acid.

Abstract: To provide a packaged high-catechin beverage in which a low-caffeine green tea extract is added. A packaged beverage containing from 0.03 to 1.0 wt % of non-polymer catechins, in which a low-caffeine green tea extract obtained by a method of brining a green tea extract into contact with a 91/9 to 97/3 by weight mixture of an organic solvent and water, activated carbon, and acid clay or activated clay is added.

Abstract: Provided are a preparation process of a purified green-tea extract capable of easily and efficiently removing a turbidity component contained in a green tea extract; a purified green-tea extract prepared by the preparation process; and a packaged beverage containing the purified green-tea extract. The preparation process of a purified green-tea extract containing, in the solid content thereof, from 36 to 99 mass % of non-polymer catechins comprises bringing a green tea extract into contact with a mixed solution containing an organic solvent and water at a mass ratio of from 65/35 to 97/3 and active carbon and/or acid clay or active clay, adjusting the organic solvent/water mass ratio of the resulting solution to from 0/100 to 85/15, and then separating the turbidity component thus separated.

Abstract: Provided is a non-tea-based, packaged beverage which includes a sour seasoning, contains catechins at high concentration, and even after stored over along term, can still give a refreshing feeling specific to a sour taste. The non-tea-based, packaged beverage is free of the persistence of a sour taste, which is experienced when taken in sport scenes, and is excellent in mouth refreshment. Even in a form filled in an oxygen-permeable, clear container, the non-tea-based, packaged beverage shows excellent color tone stability. The non-tea-based, packaged beverage contains a purified product of green tea extract added to it. The purified product comprises non-polymer catechins in its solid constituents and has a content weight ratio of (B) oxalic acid to (A) the non-polymer catechins [(B)/(A)] in a range of from 0 to 0.002. The non-tea-based, packaged beverage comprises the following ingredients (A) to (D): (A) from 0.03 to 0.