Vitamin E

Silica 5SIL 4D column is suitable for the separation of tocopherols. The chromatogram on the left shows the separation of alpha-, beta-, gamma- and delta-tocopherol by normal phase mode using the column with a mixture of n-hexane/isopropanol as an eluent. Asahipak ODP-50 6D is also suitable for the separation of tocopherols though alpha- and beta-tocopherol cannot be separated with the column. The chromatogram on the right shows the separation of alpha-, beta-, and gamma-tocopherol by reversed phase mode using the column with a methanol eluent.


Sample : Tocopherol
1. alpha-Tocopherol
2. beta-Tocopherol
3. ganna-Tocopherol
4. delta-Tocopherol

              (left)                                 (right)
Column       : Shodex Silica 5SIL 4D (4.6mmID*150mm)  Shodex Asahipak ODP-50 6D (6.0mmID*150mm)
Eluent       : n-Hexane/Isopropanol=99.5/0.5          CH3OH                     
Flow rate    : 1.0mL/min                              1.0mL/min
Detector     : UV(280nm)                              UV(295nm)
Column temp. : 30deg-C                                30deg-C