Murata T, Tamai H, Morinobu T, Manago M, Takenaka A, Takenaka H, Mino M
Department of Pediatrics, Osaka Medical College, Japan.
Lipids. 1992 Nov;27(11):840-3. doi: 10.1007/BF02535860.
The beta-carotene concentrations in plasma, blood cells and buccal mucosal cells were determined by high-performance liquid chromatography with electrochemical detection. This method was 1,000 times more sensitive than the conventional spectrophotometric method. Polymorphonuclear cells and red blood cells had lower beta-carotene levels than the other cells. After oral administration of 580 mg/day of all-trans beta-carotene to human male volunteers for a week, the beta-carotene concentrations in all cell types increased at least several times above the original levels.
