Application of Differential Pulse Voltammetry to Determine the Efficiency of Stripping Tocopherols from Commercial Fish Oil

作者：Lubeckyj Rachele A; Winkler Moser Jill K; Fhaner Matthew J^*

来源：Journal of the American Oil Chemists' Society, 2017, 94(4): 527-536.

DOI：10.1007/s11746-017-2968-0

• Tocopherol
• Fish oil
• Application
• Electrochemistry
• Differential pulse voltammetry

There has been an increase in the use of electrochemical methods for monitoring antioxidant levels in a variety of disciplines due to the sensitivity, low detection limits, ease of use, low cost and rapid analysis time offered by these techniques. One technique that has received specific attention is differential pulse voltammetry. We describe a novel application of differential pulse voltammetry to quantitatively and qualitatively determine the efficiency of removing tocopherols from commercial fish oil via column chromatographic separation. The relative limits of detection and quantitation of differential pulse voltammetry are compared to HPLC for determining the removal of tocopherols from commercial fish oil. It was determined that differential pulse voltammetry can monitor the separation of commercially added antioxidants from the bulk sample via a decrease in antioxidant oxidation currents. Furthermore, the limits of detection and quantitation were found to be comparable with values obtained using HPLC for tocopherol identification and quantitation.

• 出版日期2017-4