PROCESS FOR HYDROLYZING A PARTIALLY EXTRACTED ROASTED AND GROUND COFFEE

摘要

The invention involves solubilizing a partially extracted roasted and ground coffee, such as the spent grounds from a commercial coffee percolation system, in a reactor, preferably a plug flow reactor, by a high temperature short time process without the introduction of any added acid catalyst. The hydrolysate, thus obtained, is useful for increasing the soluble coffee solids content in combination with an aqueous extract of roasted coffee.