Patent ID: 7713565
Filing Date: 2010-05-11
Classification: A23F

Abstract:
1. A method of increasing the density and foaming capacity of an instant coffee powder, said method comprising: (a) heating an instant coffee powder, consisting essentially of dried soluble coffee in the form of particles or granules having internal voids, to a temperature at or above the glass transition temperature of the dried soluble coffee particles or granules under pressurized gas at a sufficient pressure above atmospheric pressure, thereby forcing gas into internal voids of the dried soluble coffee particles or granules; (b) cooling the heated instant coffee powder to a temperature below the glass transition temperature of the dried soluble coffee particles or granules; and (c) depressurizing the cooled instant coffee powder, wherein the depressurized cooled dried soluble coffee particles or granules have internal voids filled with entrapped pressurized gas, whereby the instant coffee powder, after subjecting to said method, has increased bulk density and gas content.