PROBLEM TO BE SOLVED: To provide a packaged caffeine-reduced green-tea beverage which has sweet aroma, gives remaining richness of the sweet aroma and delicious taste and can be enjoyed even in a cooled state.SOLUTION: The packaged green-tea beverage is characterized by having a caffeine concentration of 90 ppm or less, a total sugar concentration, obtained by adding the concentration of nonreducing sugars and the concentration of reducing sugars, in the range of 150-500 ppm, a ratio of the concentration of the nonreducing sugar to the concentration of the reducing sugar (nonreducing sugar/reducing sugar) in the range of 2.0-13.0, a ratio of the concentration of ester catechins to sugar concentration (ester catechins/sugars) of 0.9-2.2 and a percentage of the concentration of theanine to the concentration of caffeine ((theanine/caffeine)×100) of 10.0 or more.COPYRIGHT: (C)2011,JPO&INPIT【課題】甘香があり、甘香と旨味のコクが残り、冷えた状態でもおいしく飲用できる、カフェイン量を低減した容器詰緑茶飲料を提供する。【解決手段】本発明の容器詰緑茶飲料は、カフェインの濃度が90ppm以下であり、還元糖と非還元糖とを合わせた糖類の濃度が150ppm~500ppmであり、還元糖の濃度に対する非還元糖の濃度の比率(非還元糖/還元糖)が2.0~13.0であり、前記糖類の濃度に対するエステル型カテキンの濃度の比率(エステル型カテキン/糖類)が0.9~2.2であり、カフェインの濃度に対するテアニンの濃度の百分率((テアニン/カフェイン)×100)が10.0以上であることを特徴とする。【選択図】なし