Extract

Extract

An extract is a substance made by a part of a raw material, often by using a solvent such as ethanol or water. Extracts may be sold as tinctures or in powder form.

The aromatic principles of many spices, nuts, herbs, fruits, etc., and some flowers, are marketed as extracts, among the best known of true extracts being almond, cinnamon, cloves, ginger, lemon, nutmeg, orange, peppermint, pistachio, rose, spearmint, vanilla, violet, and wintergreen.

Extraction techniques

The majority of natural essences are obtained by extracting the essential oil from the blossoms, fruit, roots, etc., or the whole plants, through four techniques:

*Expression when the oil is very plentiful and easily obtained, as in lemon peel.
*Absorption is generally accomplished by steeping in alcohol, as vanilla beans.
*Maceration is used to create smaller bits of the whole, as in making peppermint extract, etc.
*Distillation is used with maceration, but in many cases, it requires expert chemical knowledge and the erection of costly stills.

The distinctive flavors of nearly all fruits, in the popular acceptance of the word, are very desirable adjuncts to many food preparations, but there are only a few from which it is practicable to obtain a concentrated flavor extract of the necessary strength. Among those which lend themselves readily to the manufacture of "pure" extracts the most important are lemons, oranges and vanilla beans.

Chemical-created essence

A majority of other, concentrated fruit flavors, such as banana, cherry, currant, peach, pineapple, raspberry and strawberry, are produced by combinations of various esters, together with special oils. The desired colors are generally obtained by the use of dyes. Among the esters most generally employed are ethyl acetate and ethyl butyrate. The chief factors in the production of artificial banana and pineapple extract, and also important in the manufacture of strawberry extract, are amyl acetate and amyl butyrate, amyl alcohol being the principal constituent of that part of the alcohol obtained by the distillation of grain and potato starch, which is popularly known in the US as fusel oil and in Europe, generally by the title of potato oil.

Artificial extracts do not, as a rule, possess the delicacy of the fruit flavor, but they get sufficiently close to it to be of real service and convenience when true essences are unobtainable or considered to be too expensive.

References


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  • extract — [ek strakt′, ikstrakt′; ] for n. [ eks′trakt΄] vt. [ME extracten < L extractus, pp. of extrahere, to draw out < ex , out + trahere, to DRAW] 1. to draw out by effort; pull out [to extract a tooth, to extract a promise from someone] 2. to… …   English World dictionary

  • Extract — Ex tract , n. 1. That which is extracted or drawn out. [1913 Webster] 2. A portion of a book or document, separately transcribed; a citation; a quotation. [1913 Webster] 3. A decoction, solution, or infusion made by dissolving out from any… …   The Collaborative International Dictionary of English

  • extract — EXTRÁCT, extracte, s.n. 1. (Ieşit din uz) Copie a unui act, scoasă dintr un registru (de stare civilă). 2. Substanţă sau amestec de substanţe chimice preparat prin concentrarea până la un anumit grad a produselor extrase din diferite materii… …   Dicționar Român

  • Extract — Ex*tract , v. t. [imp. & p. p. {Extracted}; p. pr. & vb. n. {Extracting}.] [L. extractus, p. p. of extrahere to extract; ex out + trahere to draw. See {Trace}, and cf. {Estreat}.] 1. To draw out or forth; to pull out; to remove forcibly from a… …   The Collaborative International Dictionary of English

  • Extract — Données clés Titre québécois Essence Titre original Extract Réalisation Mike Judge Scénario Mike Judge Acteurs principaux Jason Bateman …   Wikipédia en Français

  • extract — vb extort, elicit, *educe, evoke Analogous words: draw, *pull, drag: *demand, require, exact: obtain, procure, gain, win, acquire, *get extract n Extract, excerpt denote a passage transcribed or quoted from a book or document …   New Dictionary of Synonyms

  • Extract — Extract, beinahe gleichbedeutend mit Essenz (s. d.) ist der Auszug irgend eines gewürzhaften oder andern Pflanzenstoffes. Er unterscheidet sich von letzterer nur dadurch, daß diese immer weinig oder geistig ist, während der Extract auch mit… …   Damen Conversations Lexikon

  • extract — [n] something condensed from whole abstract, citation, clipping, concentrate, cutting, decoction, distillate, distillation, elicitation, essence, excerpt, infusion, juice*, passage, quotation, selection; concepts 270,835 Ant. insertion extract… …   New thesaurus

  • extract — ex·tract / ek ˌstrakt/ n: a certified copy of a document that forms part of or is preserved in a public record Merriam Webster’s Dictionary of Law. Merriam Webster. 1996. extract …   Law dictionary

  • Extract — (v. lat. Extractum), 1) Auszug; 2) Gemisch verschiedener Körper, welches bei der Behandlung bes. von Pflanzen u. Thierstoffen mit indifferenten, flüchtigen Lösungsmitteln u. durch vollständiges od. theilweises Verdunsten des Lösungsmittels[46]… …   Pierer's Universal-Lexikon

  • Extract — Extract, lat., Auszug, in der Pharmacie Pflanzensäfte, die durch Abdampfen eingedickt sind …   Herders Conversations-Lexikon

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