Abstract: Provided is a concentrated coffee extract solution having a rich sweet aroma and a clear aftertaste. The concentrated coffee extract solution contains the following components (A) and (B): (A) at least one pyrazine selected from 2-methylpyrazine, 2,5-dimethylpyrazine, 2,6-dimethylpyrazine, ethylpyrazine, 2-ethyl-5-methylpyrazine, 2-ethyl-6-methylpyrazine, 2-ethyl-3-methylpyrazine, 2-ethyl-3,5-dimethylpyrazine and 3,5-dimethyl-2-methylpyrazine, and (B) at least one guaiacol selected from guaiacol, 4-ethylguaiacol and 4-vinylguaiacol. A content weight ratio [(B)/(A)] of the component (B) to the component (A) is 0.6 or smaller.

Abstract: Provided is a coffee beverage, including the following components (A), (B), and (C): (A) at least one selected from the group consisting of catechol and pyrogallol; (B) 3,4-dicaffeoyl-1,5-quinolactone; and (C) chlorogenic acids, in which a ratio of a total peak area of the component (A) to a peak area of the component (B), ((A)/(B)), as determined by liquid chromatography-time of flight mass spectrometry (LC-TOF/MS) of the coffee beverage, is from 0 to 2.0, and in which a content of the component (C) in the coffee beverage is from 0.05 to 2% by mass.

Abstract: Provided is a concentrated coffee extract solution having a rich sweet aroma and a clear aftertaste. The concentrated coffee extract solution contains the following components (A) and (B): (A) at least one pyrazine selected from 2-methylpyrazine, 2,5-dimethylpyrazine, 2,6-dimethylpyrazine, ethylpyrazine, 2-ethyl-5-methylpyrazine, 2-ethyl-6-methylpyrazine, 2-ethyl-3-methylpyrazine, 2-ethyl-3,5-dimethylpyrazine and 3,5-dimethyl-2-methylpyrazine, and (B) at least one guaiacol selected from guaiacol, 4-ethylguaiacol and 4-vinylguaiacol. A content weight ratio [(B)/(A)] of the component (B) to the component (A) is 0.6 or smaller.

Abstract: Provided is a concentrated coffee extract solution having a rich sweet aroma and a clear aftertaste. The concentrated coffee extract solution contains the following components (A) and (B): (A) at least one pyrazine selected from 2-methylpyrazine, 2,5-dimethylpyrazine, 2,6-dimethylpyrazine, ethylpyrazine, 2-ethyl-5-methylpyrazine, 2-ethyl-6-methylpyrazine, 2-ethyl-3-methylpyrazine, 2-ethyl-3,5-dimethylpyrazine and 3,5-dimethyl-2-methylpyrazine, and (B) at least one guaiacol selected from guaiacol, 4-ethylguaiacol and 4-vinylguaiacol. A content weight ratio [(B)/(A)] of the component (B) to the component (A) is 0.6 or smaller.

Abstract: The present invention provides a packaged coffee beverage subjected to heat-sterilization, wherein (A) a concentration of chlorogenic acids is not less than 0.1% by mass and less than 0.14% by mass, (B) a mass ratio of chlorogenic acids/tannin (FOLIN-DENIS method) is in the range of 0.6 to 1.0, and (C) a mass ratio of dichlorogenic acids/chlorogenic acids is in the range of 0.07 to 0.16.

Abstract: Provided is a concentrated coffee extract solution having a rich sweet aroma and a clear aftertaste. The concentrated coffee extract solution contains the following components (A) and (B): (A) at least one pyrazine selected from 2-methylpyrazine, 2,5-dimethylpyrazine, 2,6-dimethylpyrazine, ethylpyrazine, 2-ethyl-5-methylpyrazine, 2-ethyl-6-methylpyrazine, 2-ethyl-3-methylpyrazine, 2-ethyl-3,5-dimethylpyrazine and 3,5-dimethyl-2-methylpyrazine, and (B) at least one guaiacol selected from guaiacol, 4-ethylguaiacol and 4-vinylguaiacol. A content weight ratio [(B)/(A)] of the component (B) to the component (A) is 0.6 or smaller.

Abstract: The present invention provides a packaged coffee beverage subjected to heat-sterilization, wherein (A) a concentration of chlorogenic acids is not less than 0.1% by mass and less than 0.14% by mass, (B) a mass ratio of chlorogenic acids/tannin (FOLIN-DENIS method) is in the range of 0.6 to 1.0, and (C) a mass ratio of dichlorogenic acids/chlorogenic acids is in the range of 0.07 to 0.16.