1. What is an snack extruder?
Puffing is a method of food processing. The processed food is put into a closed container, heated and pressurized, and then suddenly decompressed. So the water in the food evaporates and expands, causing the dog food to appear many small holes and become crispy. Puffed dog food. Then the basic principle is to use the screw and screw sleeve in the snack food making machine. To heat up and pressurize the raw material through extrusion. And to extrude the high-temperature and high pressure food out of the die hole. And achieve rapid volume expansion due to sudden decompression.
2. What process technology is using for food puffing of snack extruder?
The most commonly used processes for puffed food of snacks manufacturing machine include extrusion, baking, frying, and other types.
Extrusion type expansion is to use the principle of high temperature extrusion to extrude the raw material through the screw. So that the material is in a high temperature and high pressure state. And the material is extruding through the smaller pores of the discharge port. The principle of moisture vaporization is using to make the material extremely expandable , Forming puffed food with loose tissue;
Baking type puffing is to first add water to the raw materials. And stir with steam to make a specific shape of blank material. After drying, and then bake it with hot air or hot sand. So that the water in the blank material is heating to expand to form puffing; fried type puffing and Baking type puffing also needs to make embryo first, and then form puffing after frying;
Other types of puffing are the use of extruded, baked, and fried puffed foods. Then coated with chocolate, or sandwiched to produce puffed foods of various colors. Puffing food generally needs to be seasoned. And a considerable proportion of natural auxiliary materials can add to enrich the nutritional ingredients of the formula. And produce foods with various tastes and flavors.
It can see from the above processes that there are many production processes for puffed food, not limited to frying. Since ordinary consumers have experience of frying food in the process of cooking at home, they are rare in processing techniques such as extrusion and baking. See, so many people think that puffed foods are fried. Nowadays, new processing techniques such as air puffing are already in use, and the application of many advanced technologies provides a good development prospect for the production of puffed food.
3. What is the function of the snack extruder?
The multiple functions of the snack food machine make it widely used in feed, food and industry. Based on the extruder. We will introduce one or a group of functions in the process of extruder. These functions are.
A. Cohesion. In the process of puffing, food or feed ingredients can tightly combineding and agglomerated into discrete small pieces.
B. Degassing effect. Food or feed ingredients containing bubbles will be removed during the expansion process.
C. Dehydration. During the expansion process of general food or feed, the water content will lose 4%-7% on the original basis.
D. Expansion. The operating conditions and configuration of the extruder can control the density of pet feed and aquatic feed.
E. Gelation. Puffing cooking can gelatinize starch during the processing of food or pet feed.
Grinding effect. The raw materials can be ground to a certain extent in the extruder during the processing of food or feed.
Homogenization: The homogenization of the extruder changes the structure of unattractive raw materials and makes them more acceptable.
Mixing. In the process of expansion, various extruders have a variety of screws to choose from. It can make the extruder produce the desired mixing amount.
Pasteur sterilization and sterilization. In the process of food or feed puffing, the raw materials can be pasteurized or sterilized by puffing technology.
