peptone
[pep-tohn]
- any of a class of diffusible, soluble substances into which proteins are converted by partial hydrolysis.
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Origin of peptone
1855–60; < German Pepton < Greek peptón, neuter of peptós cooked, digested, verbid of péptein
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for peptone
Historical Examples of peptone
Protein, under the same conditions, is changed to a peptone.
A Civic BiologyGeorge William Hunter
Thus, 7.5 grammes of peptone dissolved in water in such proportion as to make a five per cent.
On Digestive ProteolysisR. H. Chittenden
On the other hand, when peptone was introduced in larger quantity, viz., in a twenty per cent.
On Digestive ProteolysisR. H. Chittenden
Further, it is not enough to admit the formation of a single intermediate body, midway between syntonin and peptone.
On Digestive ProteolysisR. H. Chittenden
On now testing a portion of the clear filtrate for peptone by the biuret test, not a trace of a reaction could be obtained.
On Digestive ProteolysisR. H. Chittenden
peptone
- biochem any of a group of compounds that form an intermediary group in the digestion of proteins to amino acidsSee also proteose
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Word Origin for peptone
C19: from German Pepton, from Greek pepton something digested, from peptein to digest
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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Word Origin and History for peptone
1860, from German Pepton, from Greek pepton, neuter of peptos "cooked, digested" (see peptic).
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Online Etymology Dictionary, © 2010 Douglas Harper
peptone
(pĕp′tōn′)- Any of various soluble compounds that do not coagulate, are obtained by acid or enzyme hydrolysis of natural protein, and are used as nutrients in culture media.
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The American Heritage® Stedman's Medical Dictionary
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