Process for producing cold-gelling hydrocolloids

摘要

A dry hydrocolloid powder with cold-gel capabilities is produced by: dissolving a hydrocolloid comprising polysaccharide chains in an aqueous solution; heating the dissolved hydrocolloid solution to a temperature and for a time sufficient to induce a substantial alteration in the tertiary structure of the polysaccharide chains of the hydrocolloid; cooling the dissolved hydrocolloid solution to a temperature and for a time sufficient to substantially return the polysaccharide chains of the hydrocolloid to their original tertiary structure, wherein the polysaccharide chains form a gelling network; and drying the cooled hydrocolloid solution to form a dry powder. In some embodiments, the dry powder has a viscosity of between about 10 and 40 mPa-s when reconstituted in a 2% weight/weight solution at 25 degrees C. In other embodiments, the dry powder has a water absorption of greater than 20 g H2O/g powder.