Pet food freeze-drying equipment is mainly used for freeze-drying processing of pet snacks and main food. For example, single-ingredient chicken, duck, beef, fish, animal liver, etc., and formula freeze-dried staple foods. Pet freeze-dried food is characterized by no addition, pure natural, raw meat processing, more in line with the feeding habits of dogs and cats and other pets.
The company has nearly 30 years of technology accumulation and is in a leading position in the field of freeze-dried pet food. With more than 60 machines in operation in China, we can provide a complete set of equipment and automation support according to customer needs.
With nearly 30 years of technology accumulation and a number of industry patents, the company is in a leading position in the field of freeze-dried pet food. We are committed to providing better technical services to pet freeze-dried food manufacturers. We can provide different types of equipment, loading weight from 300kgs to 2500kgs can be customized. The delivery cycle and installation and commissioning cycle can be formulated according to customer requirements, and the after-sales team is professional and responsive.
The appearance of a hard shell on the surface of the product is usually due to the formation of an impermeable structure when frozen. The crack surface is caused by the weak structure of the product or the excessive speed of re-drying. This problem can be ameliorated by adjusting the freezing and redrying processes. These issues need to be addressed through the precise control and management of the lyophilization process to ensure the quality and safety of the final product.
The high water content of the product may be caused by too thick liquid medicine or insufficient heating during the lyophilization process. In addition, high condenser temperature or insufficient vacuum may also lead to high water content. It is generally recommended that the thickness of the liquid medicine does not exceed 12mm to maintain the ideal freeze-drying effect.
Poor shape or shrinkage of the product may be caused by too high or too low concentration of the liquid medicine. Too high a concentration will lead to incomplete internal water vapor escape, while too low a concentration will make the product too loose and easy to absorb moisture. The appropriate concentration range is usually between 2% and 15%, with an optimal concentration of 10%.
The change in pH of the product after freeze-drying is often related to the chemical composition in the prescription. Prescriptions containing volatile acids and non-volatile bases will increase pH after lyophilization, while prescriptions containing non-volatile acids and volatile bases will decrease pH. Changes in pH can be prevented by adding a buffer solution.
