 The intestinal bacteria deconjugate bilirubin diglucuronide and convert bilirubin to urobilinogens.Some urobilinogen is absorbed by intestinal cells and transported into the kidneys and excreted with urine (urobilin, which is the product of oxidation of urobilinogen, and is responsible for the yellow colour of urine).The remainder travels down the digestive tract and is converted to stercobilinogen.