chromogen

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chromogen

 [kro´mo-jen]
any substance, itself without color, giving origin to a coloring matter.

chro·mo·gen

(krō'mō-jen),
1. A substance, itself without definite color, which may be transformed into a pigment; denoting especially benzene and its homologues toluene, xylene, quinone, naphthalene, and anthracene, from which the aniline dyes are manufactured.
2. A microorganism that produces pigment.
3. A compound, containing a chromophore, which is colorless if that chromophore is removed.

chromogen

(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

Chromagen A chemical or compound that reacts to produce a colored end-product, used to detect the presence of a substance of interest; chromogens are critical detectors in immunoenzymatic reactions. See Porter-Silber chromagen.

chro·mo·gen

(krō'mō-jen)
1. A substance, itself without definite color, which may be transformed into a pigment.
2. A microorganism that produces pigment.
References in periodicals archive ?
By IR spectroscopy of the organic extract used we could determine the chromogen IV, probably 6-bromo-2 methylsulfonylindoxylsulfate, as a substance responsible for the free radical scavenging activity.
By IR spectroscopy of the organic extract used we could determine the chromogen IV, probably 6-bromo-2 methylsulfonylindoxylsulfate as a substance responsible for the free radical scavenging activity.
We could determine by IR spectroscopy the chromogen IV, described by Fouquet (1970) as 6-bromo-2 methylsulfonylindoxylsulfate, as a substance responsible the for the free radical scavenging activity.
The literature reports that related species of muricids produce various shades of purple, depending on the number and concentration of different chromogens, and the quantity of liquid produced varies greatly from one species to the next.
The complex is then visualized with a hydrogen peroxide substrate and 3, 3'-diaminobenzidine tetrahydrochloride (DAB) chromogen, which produces a dark brown precipitate, readily detected by light microscopy.
A linear calibration was verified for the two chromogens for iron concentrations of 0.3-30.0 [micro]mol/L.
The HIC of 66 patients with chronic liver disease was determined using the two chromogens. The correlation of the two methods was assessed by Passing-Bablok analysis.
Preanalytical factors aside [8-10], interfering chromogens include several other ordinary side-products of lipid autooxidation, alkanals, alkenals, and alkadienals as well as bile pigments, cyclic peroxides, carbohydrates, and amino acids X11-18].
Isolation and quantification of the MDA-TBA adduct by HPLC reportedly largely eliminates the interfering chromogens [19,201.
(Indianapolis, IN) was considered advantageous in our laboratory because the method decreases negative interference from chromogens such as bilirubin and hemoglobin [6, 7].
Chromogen X-Gal detects the presence of [beta]-galactosidase activity in coliforms (including E.