[Incorporation of free glycerol during re-esterification of absorbed long-chain triglycerides]

Incorporation of 14C-glycerol in absorbed LCT (via glycerophosphate) was measured in 16 volunteers. 1. Supplied orally, 14C-incorporation was about 8-times higher than after i. v. injection. 2. After supply of 14C-glycerol and 3H-palmitate, dissolved in 1.0 indian corn oil/kg, during the first 10 hours 14C-incorporation was about 40% and during the first 3 hours about equal to the re-incorporation of 3H. 3. When compared with incorporation from 3H-glucose, 14C-glycerol incorporation was 3-6-fold. The results demonstrate, that free glycerol liberated during intraluminal hydrolysis of LCT is re-incorporated in the absorbed triglycerides to a high percentage.