Study of electrochemical determination of capsaicin and Dihydrocapsaicin (cas 19408-84-5) at carbon paste electrodes modified by β-cyclodextrin

Add time:08/19/2019    Source:sciencedirect.com

In this work, we showed electrochemical evidences that α-, β-, and γ-cyclodextrins (CDs) form inclusion complex in a solution with capsaicin (CP). The electrochemical behavior of CP was evaluated on carbon paste electrodes modified with CDs. The modified electrodes exhibited a markedly enhanced Faradic current compared with the naked electrode. Our results show that CP accumulates at the surface of the modified electrodes. The electrode modified with β-CD presented best behavior. Consequently, the analytical performance was examined with this electrode. The sensitivity further improves of determination of CP on β-CD electrode at low pH and at low amounts of β-CD. The range of linearity for CP quantification was between 1.6 and 61 μmol L−1. LOD and LOQ were the best for CP at 0.062 and 0.200 μmol L−1, respectively. Square wave voltammetry was then used to study CP and Dihydrocapsaicin (cas 19408-84-5) (DHCP) at electrodes modified with β-CD. Voltammograms of both capsaicinoids showed peaks at the same potential. However, the current is notably larger for DHCP and the voltammograms were distinct for each capasicinoid. The linearity range for CP was between 1.3 and 9.3 μmol L−1, while the LOD was 0.2102 μmol L−1, and the LOQ was 0.7 μmol L−1. For DHPC, the linearity range was 0.69–6.7 μmol L−1, LOD was 0.09041 μmol L−1, and LOQ was 0.301 μmol L−1. No analyte preconcentration was required. Tabasco sauce was then analyzed using this method and the result was equivalent to those obtained with high performance liquid chromatography.

We also recommend Trading Suppliers and Manufacturers of Dihydrocapsaicin (cas 19408-84-5). Pls Click Website Link as below: cas 19408-84-5 suppliers

Prev:Comparison of in vitro metabolism and cytotoxicity of capsaicin and Dihydrocapsaicin (cas 19408-84-5)
Next:A validated HPLC-FLD method for analysis of intestinal absorption and metabolism of capsaicin and Dihydrocapsaicin (cas 19408-84-5) in the rat)