urobilin


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urobilin

 [u″ro-bi´lin]
a brownish pigment formed by oxidation of urobilinogen; found in the feces and sometimes in the urine after standing in the air.

u·ro·bi·lin

(yūr'ō-bī'lin),
A uroporphyrin; an acyclic tetrapyrrole that is one of the natural breakdown products of heme via choleglobin, verdohemochrome, biliverdin, bilirubin, and d-urobilinogen; a urinary pigment that gives a varying orange-red coloration to urine according to its degree of oxidation.

u·ro·bi·lin

(yūr'ō-bī'lin)
A uroporphyrin; an acyclic tetrapyrrole that is one of the natural breakdown products of heme; a urinary pigment that gives a varying orange-red coloration to urine.
Synonym(s): urohematin.

u·ro·bi·lin

(yūr'ō-bī'lin)
A uroporphyrin; an acyclic tetrapyrrole that is one of the natural breakdown products of heme.
Synonym(s): urohematin.
References in periodicals archive ?
The color and fluorescent characteristics were consistent with that of urobilins [3].
A number of chromatographic techniques have been developed for the identification of urobilins in biological fluids [7,8].
In conclusion, we have developed a simple and convenient method in which simultaneous identification of urobilins and porphyrins can be achieved.