What are the similarities and differences between pet food freeze dryers and pet food dryers? Can they replace each other? How should pet food manufacturers choose drying equipment? Below, we sort it out for you:
The common point of pet freeze dryers and dryers is that they are both drying equipment, but pet freeze dryers belong to the emerging low-temperature drying technology representatives, and dryers belong to the traditional high-temperature drying technology representatives.
The working principle of the dryer is that by heating, the temperature in the box rises rapidly, and under the action of heat, the moisture in the product is volatilized from liquid to vapor (the principle of volatilization), thereby obtaining a dry product. However, under high temperatures, the product shrinks and deforms, the color is browned, the nutrients are lost, the taste is tough, and the palatability is poor. Advantages are low cost.
The working principle of the pet freeze dryer is to first freeze the water in the pet food into solid ice crystals at low temperature, and then control the temperature in a low-pressure environment to make the solid ice crystals sublime into a vapor state (sublimation principle), and finally achieve dehydration and drying. the goal of. Because the freeze-drying process is carried out at a low temperature, the original color, flavor, shape, and other biological properties of the product can be well preserved after freeze-drying, and the nutrients are preserved. And the taste is crisp and fluffy, and the palatability is high.
