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These are the results of a vitamin E separation test done using a pilot plant.
Test Equipment: Inside Diameter of Column 108 [mm] * Height 1200 [mm] * 12 columns
Adsorbent Capacity: 133 [l]
Separation Conditions
Adsorbent |
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Desorbents |
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Feed |
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Feed Composition [%] |
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Feed Flow Rate |
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Separation Result
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Fraction A |
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97.4 |
1.8 |
0.0 |
0.0 |
0.3 |
Fraction B |
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1.2 |
98.2 |
100.0 |
98.5 |
1.0 |
Fraction C |
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1.4 |
0.0 |
0.0 |
1.5 |
98.7 |
As shown in the table, vitamin E (, , , -tocopherol) was fractionized (Fraction B) at a high purity and high recovery rate.
In this example, tocopherol was separated using silica gel as adsorbent and toluene as desorbent; however, tocopherol can also be separated using ODS silica as adsorbent and methanol as desorbent. In the case presented here, the flow was such that the higher polarity substances were withdrawn as component A, and substances of lower polarity were withdrawn as component C.
Japanese Patent Laid-Open No. 59647 (1996): "Tokohuerouru no seizou houhou (The Production Method of Tocopherol)"