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US 4,107,339 AGranted
Soluble coffee process and product
AssigneeGeneral Foods Corporation
InventorBrian Clifford Shrimpton
Life of this patent
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Abstract
Soluble coffee process involving the addition of a partial condensate of volatile flavorful components to a concentrated coffee extract which has previously been stripped of its volatile flavorful components and subjecting this enhanced concentrated coffee extract to a dehydration process which maximizes the retention of the flavorful components to provide a soluble coffee product with distinct green/nutty flavor notes.
Claims6
In a process for the preparation of soluble coffee powder obtained by dehydrating an aqueous roasted and ground coffee extract, the improvements which comprise;
- a. evaporatively stripping the volatile flavourful components from the aqueous coffee extract in an evaporation zone at an absolute pressure ranging from 16 inches mercury to atmospheric pressure and vaporizing 5 to 15% of the water in the aqueous coffee extract, said water vapour containing the stripped flavourful coffee components;
- b. partially condensing the stripped volatile flavourful components-containing water vapour mixture in a condensing zone at an absolute pressure ranging from 16 inches mercury to atmospheric pressure, the condensate as it exits from the condensing zone is within a temperature range from 33.degree. F to 70.degree. F to recover an aqueous solution of condensed flavourful and aroma component;
- c. concentrating the stripped aqueous coffee extract from step (a) to form a concentrated coffee extract having a solids content ranging from 37% to 55% (w/w);
- d. admixing the aqueous solution of flavourful components of step (b) with the concentrated coffee extract of step (c);
- e. feeding the mixture of step (d) to a spray dryer within a temperature range from 27.degree. F to 200.degree. F;
- f. spray drying the mixture of step (e) at a droplet size of between 100 and 300 microns using a spray drying nozzle pressure of from 700 to 2500 psig, an inlet air temperature of between 250.degree. F and 550.degree. F and an outlet air temperature of between 180.degree. F and 230.degree. F.
3 more elements
Dependencies are inferred from the claim text.