Process for freezing coffee extract prior to lyophilization

Details Process for freezing coffee extract prior to lyophilization Process for freezing coffee extract prior to lyophilization

1975-08-28

1976-06-08

Camby, John J.

Drying and gas or vapor contact with solids

Apparatus

With means to treat gas or vapor

34 92, F26B 506

Patent

active

039614247

ABSTRACT:
This invention involves dispersing coffee extract in relatively warm immiscible liquid refrigerant wherein the temperature of the extract/refrigerant mix is maintained at about 15.degree.F. to the ice point of the extract. This permits the formation of large ice crystals whereby the finished product is darker and more coffee-like in color. Next the temperature of the mix is reduced to below -20.degree.F. and the frozen extract is separated from the refrigerant and is then freeze-dried.

REFERENCES:
patent: 3373042 (1968-03-01), Elerath et al.
patent: 3399061 (1968-08-01), Lutz
patent: 3438784 (1969-04-01), Clinton et al.
patent: 3443962 (1969-05-01), Elerath
patent: 3888859 (1975-06-01), Ponzoni et al.
patent: 3925903 (1975-12-01), Ward

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