extract

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extract

1. a preparation containing the active principle or concentrated essence of a material
2. Pharmacol a solution of plant or animal tissue containing the active principle
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Extract

 

a concentrated medicinal substance obtained from raw materials that contain certain active ingredients, such as glycosides, alkaloids, and vitamins; a type of galenical. Depending on the extracting agent used, extracts may be categorized as, for example, aqueous, alcoholic, or ethereal. Depending on the degree of thickening after evaporation, they may be classified as liquid, semiliquid (no more than 25 percent moisture), or dry (up to 5 percent moisture).

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

extract

[′ek‚strakt (noun) or ik′strakt (verb)]
(chemistry)
Material separated from liquid or solid mixture by a solvent.
(computer science)
To form a new computer word by extracting and putting together selected segments of given words.
To remove from a computer register or memory all items that meet a specified condition.
(metallurgy)
To separate a metal or a mineral from an ore by various chemical or mechanical methods.
(pharmacology)
A pharmaceutical preparation obtained by dissolving the active constituents of a drug with a suitable menstruum, evaporating the solvent, and adjusting to prescribed standards.
A preparation, usually in a concentrated form, obtained by treating plant or animal tissue with a solvent to remove desired odiferous, flavorful, or nutritive components of the tissue.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

extract

To decompress. To restore the original files from a compressed archive (ZIP file, RAR file, etc.). See archive, data compression and archive formats.
Copyright © 1981-2019 by The Computer Language Company Inc. All Rights reserved. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is strictly prohibited without permission from the publisher.
References in periodicals archive ?
A SLIT combination of Timothy pollen and nine additional pollen allergen extracts performed significantly worse than Timothy alone at the same dose; in fact, it failed to outdistance placebo in most endpoints (J.
The blocking activity of the allergen-specific IgG fraction on the IgE reactivity to Dpt allergen extract was then evaluated by inhibition ELISA.
Activated, washed microspheres were suspended in 50 [micro]L of diluted allergen extract (1:100 in PBS, pH 7.4).
Efficacy and safety of sublingual tablets of house dust mite allergen extracts in adults with allergic rhinitis.
A study reported that the development of sensitisation to perennial allergens early in life (3mm at the SPT.9 Allergen extracts for SPT were procured from abroad (Greerlabs, USA) and included allergens of HDMs, paper mulberry, grass, mixed pollen, neem and eucalyptus, cannabis, dandelion, ragweed, bottle brush, cockroach, cat and dog hair, wasp and pigeon feathers, Candida albicans, Alternariaalternata and Aspergillus fumigatus.
SIT can be improved by using recombinant allergens, which contain most of the IgE-binding epitopes of the source allergens and are pure and better standardized compared to natural allergen extracts (5).
For allergen extracts that are available as 1:20 wt/vol, the six dilutions contain an allergenic concentration of: 1:100 for dilution #1; 1:500 for dilution #2; 1:2500 for dilution #3; 1:12,500 for dilution #4; 1:62,500 for dilution #5 and 1:312,000 for dilution #6.
Current AIT with native allergen extracts carries the risk of adverse reactions, since allergens in their native conformation present IgE epitopes and possess full allergenic potential.
Allergen extracts in standard activity and concentration (Stallergenes SA, France) and multiple test applicators (10 tests/panel, Medikaperk Express, Istanbul, Turkey) were used for the SPT.
Allergen extracts for SPT were purchased from Hollister Stier (Spokane, WA, USA).