PROBLEM TO BE SOLVED: To provide a coffee beverage hardly causing precipitation and separation of fat by high-temperature sterilization treatment at production, and long-term preservation after the production, having a refreshing taste, and also having both of bacteriostatic activities and emulsion stability.SOLUTION: The coffee beverage is obtained by adding a fatty acid ester of a polyglycerol having 2-5 polymerization degree to an extract of coffee treated with a glycolytic enzyme. Alternately, the polysaccharide originated from the coffee extract in the coffee beverage satisfies at least one of the following conditions (A) to (C): (A) not less than 50% of the peak area corresponding to the molecular weight of from 5,000 to 100,000 of the polysaccharides measured by a gel permeation chromatography is reduced by a polysaccharide molecular weight-reducing treatment (B) the peak of the molecular weights of the polysaccharides is present at the molecular weight of from 1,000 to 4,000 measured by the gel permeation chromatography and (C) the weight average molecular weight of the polysaccharides measured by the gel permeation chromatography is from 1,000 to 6,000.COPYRIGHT: (C)2008,JPO&INPIT【課題】製造時の高温殺菌処理や製造後の長期保存によっても沈殿物や脂肪の分離などが発生せず、すっきり味であり、しかも、静菌力と乳化安定性を兼ね備えたコーヒー飲料を提供する。【解決手段】糖分解酵素で処理したコーヒー抽出液に重合度が2~5のポリグリセリン脂肪酸エステルを添加して成るコーヒー飲料、または、コーヒー飲料中のコーヒー抽出物に由来する多糖類が次の(A)~(C)の条件の少なくとも1つを満足するコーヒー飲料。(A)ゲル浸透クロマトグラフィーで測定した多糖類の分子量5000~100000に相当するピーク面積の50%以上が多糖類低分子化処理により減少する。(B)ゲル浸透クロマトグラフィーで測定した分子量1000~4000に多糖類の分子量ピーク頂を有する。(C)ゲル浸透クロマトグラフィーで測定した多糖類の重量平均分子量が1000~6000である。【選択図】なし
