| 摘要 |
PURPOSE:To obtain the titled food having low-specific gravity fibrous tissue having directional property in a short time, by extruding a food ingredient having low protein content by an extruder having a specific metallic plate stopper to shape it. CONSTITUTION:A food ingredient having low protein content of <=30wt% protein content, such as wheat flour, barley flour, wheat starch, etc. is fed to an extruder wherein two screws rotating in the same direction obtained by combin ing totally a screw to produce pressure with a screw for kneading, and a screw to transport reversely and partially in a barrel are set, and the metallic plate stopper 3 [e.g., the stopper A, B, etc., in the figure] having a great number of through holes and the wire net stopper 2 are laid between the tip 1 of the screw and the die 4 supported by the die holder 5, the ingredient is transported forcedly at 150-180 deg.C of the highest heating temperature during transportation under pressrue at 3-8kg/cm<2> inner pressure during passing through the stoppers 2 and 3, extruded, shaped, and a low-specific gravity fibrous structure having directional property and 0.15-0.3 specific gravity is extruded from the die outlet 6 continuously, to give a snack food.
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