chromogen

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chro·mo·gen

 (krō′mə-jən)
n.
1. Chemistry A substance capable of conversion into a pigment or dye.
2. Biology A strongly pigmented or pigment-generating organelle, organ, or microorganism.

chro′mo·gen′ic (-jĕn′ĭk) adj.

chromogen

(ˈkrəʊmədʒən)
n
1. (Chemistry) a compound that forms coloured compounds on oxidation
2. (Chemistry) a substance that can be converted to a dye
3. (Microbiology) a bacterium that produces a pigment

chro•mo•gen

(ˈkroʊ mə dʒən, -ˌdʒɛn)

n.
1.
a. any substance found in organic fluids that forms colored compounds when oxidized.
b. a colored compound that can be converted into a dye.
2. a chromogenic bacterium.
[1855–60]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.chromogen - a compound that can be converted to a pigment
stercobilinogen, urobilinogen - a chromogen formed in the intestine from the breakdown of bilirubin; yields urobilins on oxidation; some is excreted in the feces and some is resorbed and excreted in bile or urine
chemical compound, compound - (chemistry) a substance formed by chemical union of two or more elements or ingredients in definite proportion by weight
Translations

chro·mo·gen

n. cromógeno, sustancia que produce color.
References in periodicals archive ?
Uric acid + H20 Uricase Allantoin + H2O H2O2 + Phenolic chromogens Peroxidase Red coloured compound.
9,987,203 B1; Unwined, Inc., Bunnell, FL, has patented a method of improving the cosmetic appearance of human teeth that entails contacting the teeth with a whitening powder composition after ingesting a chromogenic, tannin-containing food or beverage; and allowing the whitening powder to dissolve thereby reducing staining of the teeth caused by tannins and/or chromogens.
Bleaching products work by penetrating the tubules of the tooth enamel and dentin to oxidize the chromogens, which are dark or color compounds within the tooth.
chromogens and 3 samples revealed the presence of S.
Organic chromogens are taken up by the pellicle and the color imparted is determined by the natural color of the chromogen and the color seen on the tooth is considered to be derived mostly from polyphenolic compounds (15,16).
Because the non-DAB chromogens tested nonspecifically bound melanin and staining was present in the negative control, DAB was chosen as the chromogen for this assay for its crisp localization pattern and lack of nonspecific melanin binding.
However logistic problems involved in estimation of GFR from serum creatinine and creatinine clearance are inaccurate urine collection and volume measurement interference in creatinine measurement due to non-creatinine chromogens and tubular secretion of creatinine (inhibited by cimetidine).
Advanced multispectral imaging systems remove cross-talk between chromogens or fluorophores and are able to remove interfering tissue autofluorescence, thus providing quantitative data from which the per-cell intensity values are derived.
This method was based on the reducing power of phenolic hydroxyl groups (Hahn et al., 1984), which react with the phenol reagent to form chromogens that can be detected spectrophotometrically.
Analytically, the situation is even more problematical, with interferences from "noncreatinine chromogens," despite the introduction of kinetic rather than end-point assays, that not only have been a source of contention but also, until recently, have fueled a lack of consistency among kit manufacturers (11).
Double IHC for simultaneous demonstration of PCV2 and cytokeratin (DAKO-pancytokeratin, 1:200 dilution) was applied with diaminobenzidine and alkaline phosphatase as chromogens, respectively.