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Freeze drying. Freeze-dried strawberries. Freeze drying, also known as lyophilization or cryodesiccation, is a low temperature dehydration process [ 1] that involves freezing the product and lowering pressure, thereby removing the ice by sublimation. [ 2] This is in contrast to dehydration by most conventional methods that evaporate water using ...
Vacuum microwave drying is used for the US Army's experimental Close Combat Assault Ration. [3] Freeze drying or lyophilization is a drying method where the solvent is frozen prior to drying and is then sublimed, i.e., passed to the gas phase directly from the solid phase, below the melting point of the solvent. It is increasingly applied to ...
Supercritical drying (red arrow) goes beyond the critical point of the working fluid in order to avoid the direct liquid–gas transition seen in ordinary drying (green arrow) or the two phase changes in freeze-drying (blue arrow). Supercritical drying, also known as critical point drying, is a process to remove liquid in a precise and ...
The freeze drying process is similar to dehydrating, but it is much more involved and requires special equipment. A home freeze dryer looks like a small front load washing machine. It contains ...
Individual quick freezing, usually abbreviated IQF, is a descriptive term for freezing methods used in the food processing industry. The food is in individual pieces, and is frozen quickly. Products commonly frozen with IQF technologies are typically smaller pieces of food, and can include berries, fruits and vegetables both diced or sliced ...
Freeze drying, also known as lyophilization or cryodesiccation, is a low temperature dehydration process [14] that involves freezing the product and lowering pressure, thereby removing the ice by sublimation. [15] This is in contrast to dehydration by most conventional methods that evaporate water using heat. [16]
The spray drying technique was first described in 1860 with the first spray dryer instrument patented by Samuel Percy in 1872. [citation needed] With time, the spray drying method grew in popularity, at first mainly for milk production in the 1920s and during World War II, when there was a need to reduce the weight and volume of food and other materials.
Glycol dehydration. Glycol dehydration is a liquid desiccant system for the removal of water from natural gas and natural gas liquids (NGL). It is the most common and economical means of water removal from these streams. [1] Glycols typically seen in industry include triethylene glycol (TEG), diethylene glycol (DEG), ethylene glycol (MEG), and ...
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