Food freeze drying and sterile lyophilization both remove water by sublimation, but the equipment, documentation and validation requirements are not interchangeable. A food dryer is not automatically suitable for sterile drug manufacture, and describing it that way would be misleading.
What separates the two
- Food focuses on throughput, product quality, moisture, water activity and hygienic operation.
- Sterile lyophilization adds aseptic handling, sterilizable product-contact surfaces, controlled loading and unloading, batch records, data integrity, and qualification and process validation.
Start with intended use
For regulated projects, begin with the material, container and closure system, whether the product is a research sample, a non-sterile intermediate or a sterile drug product, and the documentation and qualification package required. These answers determine whether a configuration can be considered suitable.
Regulated use. GMP, sterile, validated and drug-manufacture suitability are defined for the specific model and configuration, based on the intended use and the required qualification package.