Process for producing a concentrated coffee extract

摘要

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.

主权项

1. A process for producing a concentrated coffee extract solution, the process comprising:
separating a coffee extract solution into a concentrated solution and a fraction comprising pyrazine by distillation, wherein a weight ratio of the fraction to the initial coffee extract solution is from 0.3 to 0.9 treating the concentrated solution with a porous adsorbent, thereby absorbing at least some guaiacol and/or hydroxyhydroquinone, and then mixing the concentrated solution, which has been treated with the porous adsorbent, with the fraction.