freeze-drying


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Related to freeze-drying: lyophilizer

freeze-drying

 [frēz´-dri″ing]
a method of tissue preparation in which the tissue specimen is frozen and then dehydrated at low temperature in a high vacuum. See also lyophilization.

ly·oph·i·li·za·tion

(lī-of'i-li-zā'shŭn),
1. The process of isolating a solid substance from solution by freezing the solution and evaporating the ice under vacuum.
2. The process of imparting lyophilic properties to a substance.
Synonym(s): freeze-drying

freeze-drying

/freeze-dry·ing/ (frēz-dri´ing) a method of tissue preparation in which the tissue specimen is frozen and then dehydrated at low temperature in a high vacuum.

ly·oph·i·li·za·tion

(lī-of'i-lī-zā'shŭn)
The process of isolating a solid substance from solution by freezing the solution and evaporating the ice under vacuum.
Synonym(s): freeze-drying.

freeze-drying

a process by which biological material can be preserved by removal of water under a vacuum while the material is frozen.

freeze-drying,

n a method for preparing herbs or glandular extracts in which the material is rapidly frozen to between −40° F and −60° F and then dried under vacuum. This method ensures preservation of biologically active molecules in the extracts.

freeze-drying

1. a method of tissue preparation in which the tissue specimen is frozen and then dehydrated at low temperature in a high vacuum. See also lyophilization.
2. a process of removing water from frozen foods or vaccines. The material must be powdered, sliced or diced and be stored in moisture-proof containers.
References in periodicals archive ?
In addition, new PAT tools are in development including novel sensors distributed within the lyophilizer that can provide instantaneous readout of the system conditions during the freeze-drying cycle.
Use of alginate and cryo-protective sugars to improve the viability of lactic acid bacteria after freezing and freeze-drying.
In general, the freeze-dried products cost the most, because freeze-drying is an energy-intensive process.
1 that freeze-drying and storage leads to a decline in the percentage of viable cells, but an increase in the number of viable but non cultivable cells.
Freeze-dried bacteriocin powders were prepared by growing bacteriocin producers in dairy-based media, freezing the cell-free culture supernatants at -70 C, -85 C or -196 C, and then freeze-drying the samples.
Freeze-drying has the unique ability to preserve product in a dry state without loss of quality.
But through a vacuum freeze-drying procedure, the restoration firm was very successful in salvaging the documents, he said.
There are only a handful of freeze-drying companies in the United States.
Lyoguard[R] Freeze-Dry Trays offer professionals in the pharmaceutical industry a cost-effective method of freeze-drying materials that results in a significant increase in product containment, decrease in product contamination, and dramatic reductions in clean up costs.
A thorough understanding of the process variables has led to the development of freeze-drying equipment that can preserve the physical and chemical characteristics of foods and other substances throughout the drying process, en-abling successful rehydration as well.
The Crowes, for example, have applied for a patent on a trehalose-based process for preserving liposomes with freeze-drying.