Abstract: The invention provides a method of continuously preparing caseinate from milk proteins in non-soluble powder form in an extruder machine having two co-rotating and interpenetrating screws into which water and an alkaline reagent are introduced, and the mixture formed by the milk proteins, the water, and the alkaline reagent is subjected to a plurality of steps of kneading under pressure and of shearing with the temperature rising to obtain at the outlet from the extruder machine a caseinate paste, the caseinate paste is cooled to bring its temperature to below 20° C., a continuous thin sheet of caseinate paste is formed, and the sheet is cut up into a plurality of parallel strips, and these strips are cut up into small-sized pieces of caseinate. The invention also provides an installation for continuously preparing caseinate.

Abstract: The invention relates to a method for the continuous preparation of pellets intended for the production of crusty and honeycombed snack-type food products from a natural starchy raw material having a starch content that is equal to or greater than 60% and a protein content below 13%. According to the invention, the raw material is preconditioned; said raw material is fed continuously into an extrusion machine with two co-rotary and co-penetrating screws; a supply and transport step, a cooking step, a degassing step and a cooling step are performed in the extrusion machine; a continuous bead of cooked dough having a moisture content of between 20 and 30% is formed; the dough is oriented in a vertical direction and pushed through a multiple-outlet mould to form several continuous beads; the beads are cut transversely to form pellets. The pellets are subsequently dried to produce pellets having a moisture content of between 10 and 12%.

Abstract: The invention provides a method of continuously preparing caseinate from milk proteins in non-soluble powder form in an extruder machine having two co-rotating and interpenetrating screws into which water and an alkaline reagent are introduced, and the mixture formed by the milk proteins, the water, and the alkaline reagent is subjected to a plurality of steps of kneading under pressure and of shearing with the temperature rising to obtain at the outlet from the extruder machine a caseinate paste, the caseinate paste is cooled to bring its temperature to below 20° C., a continuous thin sheet of caseinate paste is formed, and the sheet is cut up into a plurality of parallel strips, and these strips are cut up into small-sized pieces of caseinate. The invention also provides an installation for continuously preparing caseinate.

Abstract: An extrusion machine having a barrel containing a bore formed of three lobes, designed to receive a liner whose outer face is also formed of three lobes and which has two secant bores which have parallel axes and are adapted to receive two screws.