US 11,805,786 B2
Method for producing coffee extract liquid
Toshihiro Nishiumi, Kanagawa (JP); Nao Kamezawa, Kanagawa (JP); Atsushi Mukai, Kanagawa (JP); and Takashi Mukai, Kyoto (JP)
Assigned to SUNTORY HOLDINGS LIMITED, Osaka (JP)
Appl. No. 17/297,144
Filed by SUNTORY HOLDINGS LIMITED, Osaka (JP)
PCT Filed Jun. 4, 2019, PCT No. PCT/JP2019/022223
§ 371(c)(1), (2) Date May 26, 2021,
PCT Pub. No. WO2020/110353, PCT Pub. Date Jun. 4, 2020.
Claims priority of application No. 2018-224229 (JP), filed on Nov. 29, 2018.
Prior Publication US 2022/0030903 A1, Feb. 3, 2022
Int. Cl. A23F 5/26 (2006.01); A23F 5/28 (2006.01)
CPC A23F 5/262 (2013.01) [A23F 5/285 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A method for producing a coffee extract, comprising:
a) a first extraction step in which water at 70 to 120° C. is supplied to a column packed with roasted and ground coffee beans at a first flow rate of 1.0 to 10.0 kg/h per 1 L of the capacity of the column to prepare 0.05 to 0.50 kg of a first coffee extract per 1 L of the capacity of the column;
a′) a step of fractionating the first coffee extract into an extract rich in a volatile aromatic component (aroma) and extraction residue;
b) a second extraction step in which water at 125 to 150° C. is supplied to the column packed with roasted and ground coffee beans used in the first extraction step at a second flow rate of 1.0 to 10.0 kg/h per 1 L of the capacity of the column to prepare 0.5 to 5.0 kg of a second coffee extract per 1 L of the capacity of the column;
b′) a step of mixing the extraction residue with the second coffee extract, thereby obtaining a first mixture;
c) a step of evaporating and concentrating the first mixture prepared in the step b′), thereby obtaining a second mixture; and
d) a step of mixing the extract prepared in the step a′) with the second mixture prepared in the step c), wherein part or all of the extract rich in the volatile aromatic component (aroma) obtained in the step a′) is mixed with the second mixture, thereby obtaining the coffee extract.