Stercobilin is a tetrapyrrolic bile pigment and is one end-product of heme catabolism. [1] [2] It is the chemical responsible for the brown color of human feces and was originally isolated from feces in 1932. Stercobilin (and related urobilin) can be used as a marker for biochemical identification of fecal pollution levels in rivers. [3]

Urobilinogen / stercobilinogen is colourless and is further oxidised to stercobilin which imparts colour to feces. Darkening of feces upon standing in air is due to the oxidation of residual urobilinogens to urobilins. In the intestine, bilirubin is converted by bacteria to stercobilinogen.

2022年8月23日 · Both urobilinogen and stercobilinogen are colorless. Finally, stercobilinogen is oxidized to stercobilin that is excreted in the feces." Stercobilin is responsible for the brown color of...

2024年9月30日 · Stercobilin is a bile pigment related to former Molecule of the Week urobilin 1. Whereas urobilin causes the yellow color of urine, stercobilin is responsible for the brown color of feces. Both molecules are optically active; the natural forms present in the (–) configuration.

2018年8月27日 · Stercobilin is excreted through feces and is what gives them their characteristic brown color. Some of the stercobilin molecules are reabsorbed into the bloodstream, where they are oxidized to become urochrome (urobilin).

The meaning of STERCOBILIN is urobilin; especially : a brown levorotatory pigment C33H46N4O6 found in feces and urine.

stercobilin [ ster″ko-bi´lin ] a bile pigment derivative formed by air oxidation of stercobilinogen; it is a brown-orange-red pigmentation contributing to the color of feces and urine.

Stercobilin is the tetrapyrrole chemical compound that is primarily responsible for the brown color of feces. It was originally isolated from feces in 1932. Stercobilin is formed through the reduction of its parent compound stercblinogen.

2018年1月1日 · the majority is oxidized to stercobilin within the gastrointestinal tract; roughly 10% is reabsorbed and reconveyed to the liver via the portal circulation - enterohepatic circulation; minimal absorption in rectum and excretion by kidney

Stercobilin is a tetrapyrrole chemical compound, responsible for the typical brown color of human feces. It is created from bacterial conversion of bilirubin to stercobilinogen and subsequently oxidised to stercobilin .