Freeze concentration is a process used in bioprocessing to r

Freeze concentration is a process used in bioprocessing to reduce the content of water of biomaterials without affecting their functional and nutritional properties as done when water is eliminated by evaporation at relatively high temperatures. In half a page describe the process and explain how the material being covered in class could help to design this bioprocess.

Solution

Freeze concentration is a processing technique used to extract water from a sample without losing valuable aromatics. One very common use of this method is in the handling of fruit juices to produce concentrates with an intense flavor.

Freeze concentration is the removal of pure water in the form of ice crystals at subzero temperatures. The simplest form of this single stage process consists of one crystallizer and one wash column. The crystallizer is a vessel with a cooling jacket. The inner wall of the vessel is scraped. The outer wall is cooled by a circulating refrigerant. Ice production and ice crystal growth take place inside the crystallizer. By creating residence time ice crystals grow, creating an optimal crystal size distribution for efficient separation. In the wash column, the concentrated liquid is separated efficiently from the ice crystals. A compressed ice crystal bed is washed with melted ice to remove all traces of concentrated liquid. Freeze concentration ensures that all original product characteristics remain in the concentrate.