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Shizuoka-shi, Japan

Patent
Ito En Ltd. | Date: 2010-02-26

Disclosed is a novel green tea beverage packed in a container which shows a good aroma release in the mouth and a lingering aftertaste, has a richness and concentration feeling in the flavor, and can be drunk delectably even in a cold state. Specifically disclosed is a green tea beverage packed in a container characterized in that: the concentration of saccharides, i.e., the sum of monosaccharides and disaccharides, is 150-500 ppm; the ratio by concentration of the disaccharides to the monosaccharides (disaccharides/monosaccharides) is 2.0-8.0; the ratio by concentration of electron-localized catechins to the aforesaid saccharides (electron-localized catechins/saccharides) is 1.8-4.0; and the ratio by content of furfural to geraniol (furfural/geraniol) is 0.5-3.0. It is preferred that the ratio by concentration of the aforesaid saccharides to soluble solid matters originating in tea leaves (saccharides/(soluble solid matters originating in tea leaves100)) is 5.0 to 10.0.


A green tea beverage is packed in a container, which makes it possible to sense a deep aroma passing through the nasal cavity when the beverage is drunk cold, in particular even when time has passed since the container was opened and the beverage temperature has increased and become lukewarm, by adjusting the ratio (SSS/SS) of the concentration of settleable suspended solids (SSS) to the concentration of suspended solids (SS) in the green tea beverage to 0.07 to 0.48 and adjusting the ratio (sucrose/sugars) of the concentration of sucrose to the concentration of sugars, which is the sum of the concentration of monosaccharide and the concentration of disaccharide, to 0.74 to 0.94.


There has been a need to provide a green tea beverage packed in a container which exhibits a smooth feeling in the throat and a lingering taste when the beverage is drunk cold, in particular even when time has passed since the container was opened and the beverage temperature has increased and become lukewarm. The present invention provides a green tea beverage packed in a container which exhibits a smooth feeling in the throat and a lingering taste when the beverage is drunk cold, in particular even when time has passed since the container was opened and the beverage temperature has increased and become lukewarm, by adjusting a particle diameter of cumulative 90 mass % (D90) in a tea extracted liquid to 3 m to 60 m and adjusting a sugar/tartness degree ratio to 0.12 to 0.43.


Patent
Ito En Ltd. | Date: 2010-12-22

Provided is a caffeine-reduced green tea beverage packed in a container which can be enjoyed either hot or cold, and which has a sense of being concentrated due to its roasted aroma, and which has an astringent richness, while at the same time being refreshing. The green tea beverage packed in a container has a caffeine concentration of less than 90 ppm, and a total sugar concentration (obtained by adding the concentration of nonreducing sugars and the concentration of reducing sugars) that falls within the range of 100 ppm to 300 ppm; a ratio of the concentration of nonreducing sugars to the concentration of reducing sugars (non-reducing sugars/reducing sugars) that falls within the range of 13.0 to 23.0, and a ratio of ester catechins to sugar concentration (ester catechins/sugars) that falls within the range of 0.4 to 1.1.


Ochiai N.,GERSTEL K.K. | Sasamoto K.,GERSTEL K.K. | Hoffmann A.,GERSTEL GmbH and Co. KG | Okanoya K.,ITO EN Ltd
Journal of Chromatography A | Year: 2012

A method for analysis of a wide range of odor compounds in aqueous samples at sub-ngmL -1 to μgmL -1 levels was developed by full evaporation dynamic headspace (FEDHS) and gas chromatography-mass spectrometry (GC-MS). Compared to conventional DHS and headspace solid phase microextraction (HS-SPME), FEDHS provides more uniform enrichment over the entire polarity range for odor compounds in aqueous samples. FEDHS at 80°C using 3L of purge gas allows complete vaporization of 100μL of an aqueous sample, and trapping and drying it in an adsorbent packed tube, while providing high recoveries (85-103%) of the 18 model odor compounds (water solubility at 25°C: log0.54-5.65mgL -1, vapor pressure at 25°C: 0.011-3.2mmHg) and leaving most of the low volatile matrix behind. The FEDHS-GC-MS method showed good linearity (r 2>0.9909) and high sensitivity (limit of detection: 0.21-5.2ngmL -1) for the model compounds even with the scan mode in the conventional MS. The feasibility and benefit of the method was demonstrated with analyses of key odor compounds including hydrophilic and less volatile characteristics in beverages (whiskey and green tea). In a single malt whiskey sample, phenolic compounds including vanillin could be determined in the range of 0.92-5.1μgmL -1 (RSD<7.4%, n=6). For a Japanese green tea sample, 48 compounds including 19 potent odorants were positively identified from only 100μL of sample. Heat-induced artifact formation for potent odorants was also examined and the proposed method does not affect the additional formation of thermally generated compounds. Eighteen compounds including 12 potent odorants (e.g. coumarin, furaneol, indole, maltol, and pyrazine congeners) were determined in the range of 0.21-110ngmL -1 (RSD<10%, n=6). © 2012 Elsevier B.V.

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