Vitamin D in the avian egg. Its molecular identity and mechanism of incorporation into yolk.

@article{Fraser1976VitaminDI,
  title={Vitamin D in the avian egg. Its molecular identity and mechanism of incorporation into yolk.},
  author={David R. Fraser and J. S. Emtage},
  journal={The Biochemical journal},
  year={1976},
  volume={160 3},
  pages={671-82}
}
The chemical identity of vitamin D in the egg of the domestic fowl was studied by analysing radioactivity in eggs from hens injected with [3H]cholecalciferol. Labelled molecules were found throughout the egg, but the concentration of total radioactivity in albumin was only 5-7% of that in yolk. In lipid extracts of yolk, more than 90% of the radioactivity was as unchanged cholecalciferol and 5% as 25-hydroxycholecalciferol. Only about 3% of the radioactivity in albumin was chloroform-soluble… CONTINUE READING