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Young infant may be feeding entirely on mother’s milk which is white in colour but the stools which the infant passes out is quite yellowish because of the bile pigments passed through bile juice.

1. Bile pigments are any of several coloured compounds derived from porphyrin that are found in bile; principally bilirubin and biliverdin.
2. Bile pigment is produced regularly when old red blood cells are broken down, mainly by the spleen.
3. In some blood-disorders where the red cells are destroyed, more bile pigment is produced.
4. Fructose and amino acids are absorbed through intestinal mucosa with the help of carrier ions like Na+.

Correct answer: Bile pigments are any of several coloured compounds derived from porphyrin that are found in bile; principally bilirubin and biliverdin.

Solution

The yellowish color of infant stool comes from bile pigments, especially bilirubin and biliverdin, which are colored compounds present in bile. These pigments are formed during the normal breakdown of old red blood cells, mainly processed by the spleen and liver.

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