Rapid electroanalytical procedure for sesamol determination in real samples

Kamila Morawska; Natalia Festinger; Grażyna Chwatko; Rafał Głowacki; Witold Ciesielski; Sylwia Smarzewska

doi:10.1016/j.foodchem.2019.125789

Rapid electroanalytical procedure for sesamol determination in real samples

Food Chem. 2020 Mar 30:309:125789. doi: 10.1016/j.foodchem.2019.125789. Epub 2019 Oct 25.

Authors

Kamila Morawska¹, Natalia Festinger², Grażyna Chwatko³, Rafał Głowacki⁴, Witold Ciesielski⁵, Sylwia Smarzewska⁶

Affiliations

¹ University of Lodz, Department of Inorganic and Analytical Chemistry, 12 Tamka Str, Lodz 91-403, Poland. Electronic address: kamila.morawska@chemia.uni.lodz.pl.
² University of Lodz, Department of Inorganic and Analytical Chemistry, 12 Tamka Str, Lodz 91-403, Poland. Electronic address: natalia.festinger@chemia.uni.lodz.pl.
³ University of Lodz, Department of Environmental Chemistry, 163 Pomorska Str, Lodz 90-236, Poland. Electronic address: grazyna.chwatko@chemia.uni.lodz.pl.
⁴ University of Lodz, Department of Environmental Chemistry, 163 Pomorska Str, Lodz 90-236, Poland. Electronic address: rafal.glowacki@chemia.uni.lodz.pl.
⁵ University of Lodz, Department of Inorganic and Analytical Chemistry, 12 Tamka Str, Lodz 91-403, Poland. Electronic address: witold.ciesielski@chemia.uni.lodz.pl.
⁶ University of Lodz, Department of Inorganic and Analytical Chemistry, 12 Tamka Str, Lodz 91-403, Poland. Electronic address: sylwia.smarzewska@chemia.uni.lodz.pl.

PMID: 31704073
DOI: 10.1016/j.foodchem.2019.125789

Abstract

In this study, the development of an electroanalytical assay based on square wave voltammetry technique for determining sesamol (Ses) in sesame oil samples is described. The influence of various factors such as pH of the supporting electrolyte, its composition, and SW (square wave) parameters was studied. Linearity of the peak current depended on the concentration of Ses in the range from 3.0 to 140.0 μmol L^-1 with a limit of detection of 0.71 μmol L^-1. Furthermore, the cyclic voltammetric behavior of Ses and the effects of scan rate and pH on the peak current and peak potential of Ses were determined. Moreover, the electrode process was found to be diffusion-controlled. The proposed methodology was successfully applied for determining Ses in commercial sesame oil samples. The obtained results were in good agreement with the results from the HPLC-UV reference method.

Keywords: Glassy carbon electrode; High-performance liquid chromatography; Sesame oil; Sesamol; Voltammetry.

MeSH terms

Benzodioxoles / analysis*
Carbon / chemistry
Electrodes
Electrolytes / chemistry
Hydrogen-Ion Concentration
Limit of Detection
Phenols / analysis*
Potentiometry*
Sesame Oil / chemistry*

Substances

Benzodioxoles
Electrolytes
Phenols
Carbon
Sesame Oil
sesamol