The invention relates to the technical field of
food processing, in particular to a preparation method of a high-concentration coffee beverage, which comprises the following steps: S1, pretreatment: performing centrifugal treatment on coffee liquid by using a centrifugal
machine to obtain a coffee liquid base material; s2,
colloid pretreatment: dissolving psyllium seed
powder in
citric acid with the temperature of 30-40 DEG C, and treating for 30 minutes according to the ratio of 3: 100; centrifuging after the treatment is completed, and flushing
colloid obtained by centrifuging with a
phosphate solution until the pH value of a water solution after flushing is 7; and putting the washed
colloid into a freeze dryer for freeze-
drying. According to the invention, the psyllium seed
powder is introduced as a
raw material, so that the
flavor of the product is not influenced, better dietary fibers are introduced, meanwhile, the product is stabilized, the problems of too high
viscosity and unsmooth production of coffee liquid when colloid is added are solved, and the psyllium seed coffee has the effects of high stability, good fluidity and accordance with a cleaning
label.