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  2. Urobilin - Wikipedia

    en.wikipedia.org/wiki/Urobilin

    Urobilin or urochrome is the chemical primarily responsible for the yellow color of urine. It is a linear tetrapyrrole compound that, along with the related colorless compound urobilinogen , are degradation products of the cyclic tetrapyrrole heme .

  3. Stercobilin - Wikipedia

    en.wikipedia.org/wiki/Stercobilin

    [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]

  4. Urobilinogen - Wikipedia

    en.wikipedia.org/wiki/Urobilinogen

    Urobilinogen is a yellow by-product of bilirubin reduction. It is formed in the intestines by the bacterial enzyme bilirubin reductase. [1] About half of the urobilinogen formed is reabsorbed and taken up via the portal vein to the liver, enters circulation and is excreted by the kidney.

  5. We finally know why urine is yellow (ew sorry) - AOL

    www.aol.com/news/finally-know-why-urine-yellow...

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  6. Urine - Wikipedia

    en.wikipedia.org/wiki/Urine

    Usually urination color comes primarily from the presence of urobilin. [11] Urobilin is a final waste product resulting from the breakdown of heme from hemoglobin during the destruction of aging blood cells. [12] [13] Colorless urine indicates over-hydration.

  7. The Weird Color Of Green Pee May Freak You Out, But It's ...

    www.aol.com/weird-color-green-pee-may-130000898.html

    Sometimes a supplement, medication, or food can cause your urine to turn green, but it's usually not something you need to be worried about.

  8. Bilirubin - Wikipedia

    en.wikipedia.org/wiki/Bilirubin

    One breakdown product, urobilin, is the main component of the straw-yellow color in urine. [9] Another breakdown product, stercobilin, causes the brown color of feces. Although bilirubin is usually found in animals rather than plants, at least one plant species, Strelitzia nicolai, is known to contain the pigment. [10]

  9. Does the color of an egg's yolk mean anything?

    www.aol.com/does-color-eggs-yolk-mean-100011542.html

    Fox News Digital spoke to an egg expert based in Maine to find out why egg yolks come in different colors — and if these different colors mean anything significant in terms of nutrition.