Food or edible material: processes – compositions – and products – Processes – Extraction utilizing liquid as extracting medium
Reexamination Certificate
2011-03-08
2011-03-08
McNeil, Jennifer C (Department: 1789)
Food or edible material: processes, compositions, and products
Processes
Extraction utilizing liquid as extracting medium
C426S597000, C426S590000, C426S478000, C426S433000, C426S384000, C426S330300, C426S541000, C426S542000, C426S423000, C426S424000, C426S422000
Reexamination Certificate
active
07901720
ABSTRACT:
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.
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Fukuda Masahiro
Konishi Atsushi
Takahashi Hirokazu
Kao Corporation
McNeil Jennifer C
Mehta Hong
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
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