Experimental study on corm meal extrusion cooking with a whole-length three-direction visualized twin-screw extruder of food

摘要

A new whole - length three - direction visualized twin - screw extruder of food is manufactured successfully. The whole - length three - direction visualized twin screw extruder is firstly used to study on food extrusion cooking process in theworld. The corn meal twin screw extrusion cooking process has been directly observed, corn meal conveying and gelatinization has been described, and the physical model of food extrusion cooking process has been developed. The experiment was used toinvestigate the effects of the feed moisture of corn meal, screw speed on the extrudate radial expansions, main electrometer energy. Results revealed that an increase the feed moisture decreased the radial expansion and main electrometer energy and higher screw speed increased radial expansion and main electrometer energy . Extrusion cooking technology is a new food process. The ascendant plastic extrusion technology will be used to further study on extrusion of plant protein, meat product, cereals,aquaria product and other natural biopolymeric materials and on bioreaction in our institute.