Voltammetric Determination of Anethole on La₂O₃/CPE and BDDE

Abstract

In this work, DPV determination of anethole was presented using various carbon, two-diameter (1.5 and 3 mm) electrodes, that is, BDD, GC, CP, and CP doped by La2O3 and CeO2 nanoparticles. La2O3/CPE to our best knowledge was proposed first time. Cyclic voltammograms confirmed totally irreversible electrode electrooxidation process, controlled by diffusion, in which two electrons take part. The most satisfactory sensitivity 0.885 ± 0.016 µA/mg L−1 in 0.1 mol L−1 acetate buffer was obtained for La2O3/CPE with the correlation coefficient r of 0.9993, while for BDDE it was 0.135 ± 0.003 µA/mg L−1 with r of 0.9990. The lowest detection limit of 0.004 mg L−1 was reached on La2O3/CPE (3 mm), what may be compared with the most sensitive conjugate methods, but in the proposed approach, no sample preparation and analyte separation was needed. Anethole was successfully determined in specially prepared ethanol extracts of herbal mixtures of various compositions, which imitated real products. The proposed procedure was verified in analysis of commercial products, that is, anise essential oil, which contains a large concentration of anethole, and in alcohol drinks like Metaxa, Ouzo, and Rakija, in which the considered analyte occurs on trace levels. Structure and properties of the considered nanopowders and graphite pastes were investigated by EDX, SEM, and EIS.

Determination of Trans-Anethole in Essential Oil, Methanolic Extract and Commercial Formulations of Foeniculum vulgare Mill Using a Green RP-HPTLC-Densitometry Method

“…The liquid chromatography-mass spectrometry (LC-MS) method was also utilized for the quantitative analysis of TAL in combination with other components of plant extracts [36]. The differential pulse voltammetry technique was also utilized for the quantitative analysis of TAL in various herbal matrices [37]. A single high-performance thin layer chromatography (HPTLC) technique was utilized for the quantitative analysis of TAL in fennel essential oil, methanolic extract of fennel and various commercial formulations [38].…”

Classification of six herbal bioactive compositions employing LAPV and PLS‐DA

“…The supporting electrolyte was 5‐mL acetate buffer (pH = 6.0). The composition of the supporting electrolyte and the measurement parameters were determined basing on previous experience …”

“…The composition of the supporting electrolyte and the measurement parameters were determined basing on previous experience. 45,56,57 All signals were registered using the LAPV by adding 30 μL of the sample (three samples for each herbal composition) into the supporting electrolyte. Then, the solution was stirred (ca.…”

Optimization of anethole determination using differential pulse voltammetry on glassy carbon electrode, boron doped diamond electrode and carbon paste electrode

“…It has a bactericidal effect. One of the important features of anise oil is the lack of resistance to light and atmospheric oxygen, because in contact with these factors, photoanethole, a substance with a yellow color and unpleasant odor and taste is formed [1][2][3][4].…”