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freeze-drying |
Also found in: Dictionary/thesaurus, Medical | 0.48 sec. |
freeze-dryingMethod of preserving food (see food technology) or other perishable materials. The product to be dried is frozen and then put in a vacuum chamber that forces out the ice as water vapour, a process known as sublimation. The most widely-known freeze-dried product is instant coffee. Many of the substances that give products such as coffee their typical flavour are volatile, and would be lost in a normal drying process because they would evaporate along with the water. In the freeze-drying process these volatile compounds do not pass into the ice that is to be sublimed, and are therefore largely retained. |
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To efficiently freeze-dry large quantities of plasma, the individual units were poured into a large pool often containing the plasma from more than a thousand donors. The group is hopeful of the commercialization of the platino-alumina agent as it uses inexpensive aluminum hydroxide as a raw material and is produced in a cost-efficient and simple freeze-dry process. However, the processing center will also feature capacity to dehydrate and freeze-dry which will produce Internet-marketable products," Lee says. |
freeze-dry
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