The Inca were freeze drying potatoes into chuño since the 13th century. The process involved multiple cycles of exposing potatoes to below … See more

Freeze-drying causes less damage to the substance than other dehydration methods using higher temperatures. Nutrient factors that are sensitive to heat are lost less in the process as compared to the processes incorporating heat treatment for drying … See more

There are many types of freeze-dryers available, however, they usually contain a few essential components. These are a vacuum chamber, shelves, process condenser, shelf … See more

There are four stages in the complete freeze drying process: pretreatment, freezing, primary drying, and secondary drying. See more

Freeze-drying is viewed as the optimal method of choice for dehydration of food because of the preservation of quality, meaning … See more

Microbial growth
Since the main method of microbial decontamination for freeze drying is the low temperature … See more

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