Metabolism of C 14 Labelled Beta-Carotene in the Rat. ∗

Abstract

Summary

Feeding of C¹⁴ labelled carotene resulted in the deposition of approximately 1.5% of absorbed C¹⁴ into liver vit. A. In the total animal an average of about 15% of the absorbed C¹⁴ went into fatty acids, and 40% into non-saponifiable material. An average of about 5% of the absorbed C¹⁴ was found in the expired CO₂. Approximately 40% of the absorbed C¹⁴ remains to be accounted for.