| related posts | Soybeans are considered the most important crop in the world with China recognizing their value for over 3000 years. Although the crop was only introduced to North America in 1804, the United States is now the leading producer and exporter of soybeans followed by Brazil, China and Argentina. It is known that raw soybeans contain anti-nutritional factors that must be de-activated by heat treatment in order to make the soybeans suitable for consumption by humans and monogastric livestock.
Technology of Soybean Extruding
Extrusion technology, as a cooking process, is particularly suitable for the beneficiation of by-products as it is energy efficient, environmentally friendly and compared to other cooking processes, it has no waste streams that need to be treated,Extrusion can process basic ingredients like sorghum, millet, rice, and maize into a wide array of textures, shapes, and flavors, and can greatly improve their nutritional content when they are processed along with inexpensive forms of protein, such as soybean meal.
Cell Repture Before and After Extruding
Flow Chart of Soybean Extruding and Pressing Line
Soybean Extruding and Pressing Workshop
The pictures above just for your reference.
Advantages of the Soybean Extruding
1. It will improve the degree of gelatinization of the starch, generating the modified starch, and it will with strong water absorption and bonding property.2. Protein is not easy to loss when feeding, as protein and starch substrate combine with each other. It also improves the titer of the protein for the reason that the protein will only be released when the digestive enzyme decomposes protein by the animals.
3. The process of extruding denatures the protein, eliminates a great number of anti nutritional factors, and at the same time, it changes the tertiary structure of protein, shortens the hydrolysis time of the protein in the intestine and improves the digestibility.
4. For the Ruminant, the extruding process will generate rumen non-degradable protein, that is to say the rumen by-pass protein could prevent the animals from ammonia poisoning and improve the utilization rate of protein.
5. Extruding can release encapsulated fats of the soybean molecular and thus improves the energy value of the fat.
6. After the extruding process, the fat and starch or protein will combine together to generate kind of compound products, named lipoprotein or lipopolysaccharide, it reduces the FFA (Free fatty acid) content, and at the same time, deactivates the lipase, controls the degradation of oil and fats, and also reduces the rancidity of the oil components during storage and transportation period.
7. Reduce the water and crude fiber content, and make better palatability.
8. Improve the potency of low-quality raw materials, reduce cost of feeding materials.
9. Extruding will decrease the content of bacteria, muscardine and fungus in the raw material and increase the safety quality of feed. Gelatinized starch can stimulate the secretion of the lactic acid in the young animals’ stomach, which can prevent the growing of the pathogenic microorganism.
10. Both the liquid and the solid oil and fats are with high viscosity, so it will definitely increases the mixing difficulty when putting them into the feed, especially for the small and medium feed mills and the feed mills that the pig farms set up themselves. And also it needs much time and hard to stir evenly. So use extruded soybeans with high oil and fats content instead of the oil material will improve the feed energy concentration, simplify the production process, and most importantly, it will save the cost.
Screw Oil Press Machine
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Soybean Extruder Machine
TXP160 type soybean extruder is the main technological equipment for soybean extruding and also can be used to manufacture different expanded feeds in oil mills, rice mills, soybean protein factories and feed mills. This extruding machine can transfer mechanical energy to thermal energy by extrusion, friction and shearing function of non-equidistance screw extrusion system, and form a certain pressure and temperature in the extruding chamber, so material is sprayed out from the discharging die head to be expanded and formed.
