First discovery of bilirubin in a flower announced

A research team led by Cary Pirone from the Department of Biological Sciences at Florida International University has identified bilirubin in the popular Bird of Paradise plant. The breakthrough study, published in the September ...

First discovery of 'animals-only' pigment bilirubin in plants

In a first-of-its-kind discovery that overturns conventional wisdom, scientists in Florida are reporting that certain plants — including the exotic “White Bird of Paradise Tree” -- make bilirubin. Until now, scientists ...

Bilirubin

Bilirubin (formerly referred to as hematoidin) is the yellow breakdown product of normal heme catabolism. Heme is found in hemoglobin, a principal component of red blood cells. Bilirubin is excreted in bile and urine, and elevated levels may indicate certain diseases. It is responsible for the yellow color of bruises, the yellow color of urine (via its reduced breakdown product, urobilin), the brown color of faeces (via its conversion to stercobilin), and the yellow discoloration in jaundice.

It has also been found in plants.

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