(redirected from peptone water)
Also found in: Thesaurus, Medical, Encyclopedia.
Related to peptone water: nutrient agar


Any of various water-soluble protein derivatives formed by partial hydrolysis or digestion of proteins by an acid or enzyme, used in culture media in bacteriology.

[German Pepton, from Greek peptos, digested, from peptein, to digest; see pekw- in Indo-European roots.]

pep·ton′ic (-tŏn′ĭk) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Biochemistry) biochem any of a group of compounds that form an intermediary group in the digestion of proteins to amino acids. See also proteose
[C19: from German Pepton, from Greek pepton something digested, from peptein to digest]
peptonic adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈpɛp toʊn)

any of a class of diffusible, soluble substances into which proteins are converted by partial hydrolysis.
[1855–60; < German Pepton < Greek peptón, neuter of peptós cooked, digested, v. adj. of péptein]
pep•ton′ic (-ˈtɒn ɪk) adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.peptone - any of various water-soluble compounds that form by hydrolysis in the digestion of proteins to amino acids
organic compound - any compound of carbon and another element or a radical
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.


[ˈpeptəʊn] Npeptona f
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005
References in periodicals archive ?
The BAX[R] System Real-Time Vibrio Assay procedure is simple to perform: stomach or blend 25g sample with 225ml alkaline peptone water, pre-warmed to incubation temperature; incubate samples at 35 [+ or -] 2[degrees]C for 18-20 hours; heat 5[micro]l enrichment in prepared lysis reagent at 37[degrees]C for 20 minutes, then at 95[degrees]C for 10 minutes, cool for 5 minutes; hydrate PCR tablets with 30[micro]l of lysate then load the rack into BAX[R] System instrument and start the test.
At the end of the incubation period, the tryptic soy broth was also serially diluted in sterile 0.1% peptone water and then surface plated onto tryptic soy agar.
Ltd., Kisyth, Victoria) was added to 1 L of 0.1 percent peptone water. The neutralizer was autoclaved for 20 minutes at 200 kilopascals (kPa).
Preparation of groundnut peptone water: 5 gm of NaCl was added to each 1 litre of groundnut basal medium.
Samples were directly plated on thiosulfate citrate bile salts sucrose agar and placed in alkaline peptone water for enrichment.
This ISO method, which incorporates the use of buffered peptone water (CMl049), modified Lauryl Sulphate Tryptose Broth (CM1133 and SR0247) and Enterobacter sakazakii Isolation Agar (CM1134), allows the presumptive identification of Cronobacter spp.
Researchers applied a 24-hour enrichment in peptone water at 35 C when the pathogen was not detected by direct plating.
The samples from each currency notes were collected with sterile cotton swab dipped in 1% peptone water and were used for taking samples.
They were then incubated in alkaline peptone water (pH 8.6) for 6-8 h at 37[degrees]C and then plated onto the agar.
coli 0157 recovery and isolation process and Lab M's Buffered Peptone Water is used with VCC Selective Supplement to prepare a pre-enrichment broth for organism recovery.
The irradiated samples were then homogenized and serially diluted in 0.1% peptone water and plated on xylose lysine deoxycholate agar, which had been overlayed with trypticase soy agar containing 0.6% yeast extract.