2.2. Extrusion-cooking treatment
The experiments were performed using a pilot cooking-extrusion plant model BC21, (Clextral). Experiments were conducted on a twin-screw co-rotating extruder, with nine modules of 100 mm was carried out according to the experimental conditions described by other authors (Wang et al., 1993) with minor modification as detailed in Table 1. After extrusion a mechanic cutter module was used to cut the extruded product.