Work

Determination of hordenine in beer samples and bodybuilding supplement at the electrified liquid-liquid interface

Year: 2025

Type: article

Abstract: This paper presents an electrochemical approach to quantitative and qualitative determination of hordenine (HODE) at the electrified liquid-liquid interface (eLLI). In this regard, we have employed ion transfer voltammetry (ITV) as an electroanalytical detection technique. The response of peak current values (positive or negative currents) increased linearly with HODE concentration in the studied concentration range from 28.49 to 1250 μM. Furthermore, the effect of pH (2−12) of the aqueous phase on recorded HODE signals was studied. Based on the obtained results a number of significant physicochemical parameters, such as the formal Galvani potential of the ion transfer reaction ( ∆ org aq Φ ′ ), diffusion coefficients ( D ), formal free Gibbs energy of the ion transfer reaction ( ∆ G ′ aq → org ) and water-1,2-dichloroethane partition coefficient ( logP DCE ′ ) were determined. Finally, we have also showed that the elaborated method can be successfully used in the electroanalysis of complex matrixes, especially: beer and bodybuilding supplement samples. • Electroanalytical investigation of hordenine at ITIES is presented for the first time. • Only the cationic form of hordenine can be detected at ITIES. • Hordenine can be detected in beer with no sample treatment. • Hordenine detection is based on its interfacial ion transfer process. • Hordenine study at ITIES provided a number of physicochemical descriptors.

Source: Food Chemistry

DOI: 10.1016/j.foodchem.2025.143734