Similarities and differences between extrusion, ripening, puffing and ripening

Extrusion maturation is the completion of material maturation by mechanical rotation of Screw rotation and material production, and the degree of ripening is poor. The puffing and ripening is developed on the basis of extrusion and ripening, and the degree of ripening is more thorough, but Production energy consumption is high and costs are high. The common feature is that the screw is rotated to push the feed forward, and mechanical friction or shear heat is generated to mature the material. The processing equipment and principle of expansion and maturation are similar to the puffing and maturation, but the processing parameters are much milder than the expansion process. The degree of ripening is slightly lower than the puffing and maturation, but the output per unit time is higher, the energy consumption is relatively lower, and the processing cost is lower than the puffing and ripening. . In the three processes, the yield of extrusion ripening is the lowest, the damage of anti-nutritional factors is the worst, but the loss of nutrients such as vitamins and amino acids is small; the degree of destruction and ripening of anti-nutritional factors is the highest, and the loss of vitamins is large. Good, effective lysine destruction is great.

When it is necessary to produce young animals and pet bulking feeds with increased ripening degree and anti-nutritional factors to achieve maximum damage, and to use the aquaculture materials that require floating, use puffing and ripening; when producing relatively high maturity, the county requires large output. When the production cost is relatively low, the expansion and curing process is recommended. The traditional extrusion curing can only produce oil cakes or semi-wet pellets of some carnivorous fish or pets.