Journal
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
Volume 58, Issue 2, Pages 757-761Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jf9031537
Keywords
Botanical origin; nano-LC; silica monolithic columns; tocopherols; tocotrienols; vegetable oils
Funding
- MEC of Spain [CTQ2007-61445]
- FEDER
- University of Valencia
- Generalitat Valenciana
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A method for the determination of tocopherols and tocotrienols in vegetable oils by nanoliquid chromatography with UV-vis detection has been developed. The separation of tocopherols was optimized in terms of mobile phase composition on the basis of the best compromise between efficiency, resolution, and analysis time. The optimal conditions were achieved using a C18 silica monolithic column (150 mm x 0.1 mm) with an isocratic elution of acetonitrile/methanol/water (acidified with 0.2% acetic acid) at a flow rate of 0.5 mu L min(-1), giving a total analysis time below 18 min. The method has been applied to the quantification of tocopherols and tocotrienols present in several vegetable oils with different botanical origins.
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