With the booming development of the pet market, dog food, as an important component of pet nutrition, is receiving increasing attention for its quality and production process. Among various dog food production equipment, the twin-screw extruder, with its unique advantages, has become a core piece of equipment in dog food production lines. This article will explore in depth why dog food production lines tend to use twin-screw extruders.
I. Enhancing the Natural Aroma and Palatability of Dog Food
After being processed by a twin-screw extruder, the natural aroma of dog food raw materials is significantly enhanced, increasing palatability and stimulating pets' appetite. Compared to artificial flavorings and fragrances, the natural aroma of natural grains and fresh meat after extrusion is more in line with the health needs of pets.
II. Optimizing the Digestibility and Absorption of Dog Food
During the processing, the twin-screw extruder enables the protein and starch matrix in the dog food raw materials to bind tightly, improving the nutritional value of the dog food. Simultaneously, the extrusion process denatures proteins, reducing the impact of anti-nutritional factors, shortening protein hydrolysis time in the intestines, and improving the digestibility and absorption rate of dog food.
III. Extending the Shelf Life of Dog Food
During the extrusion process, the twin-screw extruder can deactivate lipases in the dog food raw materials, inhibiting oil degradation, thereby extending the shelf life of the dog food. This feature makes the dog food less prone to spoilage during storage and transportation, ensuring the quality and safety of pet food.
IV. Reducing the Risk of Pet Disease
Through the extrusion process, the twin-screw extruder can reduce the content of bacteria, mold, and fungi in dog food raw materials, improving the hygienic quality of the dog food. Providing pets with sterile, cooked feed helps reduce the risk of pet disease and reduces the amount of added medications.
V. Enriching the Selection of Raw Materials for Dog Food
Because the twin-screw extruder can increase the gelatinization degree of starch and generate modified starch, more liquid ingredients (such as oils, molasses, etc.) can be added during the dog food production process. Meanwhile, the binding function of starch during extrusion reduces the amount of starch needed, providing more possibilities for the selection of other ingredients. This allows for the selection of a wider variety of inexpensive ingredients to replace expensive ones in dog food formulations, reducing costs without compromising product quality.
