Voltammetric behavior of ketoconazole and its determination in cosmetic preparation using a β-cyclodextrin modified glassy carbon electrode

A voltammetric determination of ketoconazole (KCZ) at a beta-cyclo-dextrin modified glassy carbon (CDMGC) is described. A large increase in the peak currents was observed in cyclic voltammetry (CV) and differential pulse voltammetry (DPV) of KCZ. This increase in the big current were attributed to the complex formation of the KCZ with β-cyclodextrin. CV studies indicate that the process is irreversible and adsorption-controlled. The effect of pH, scan rate, cyclodextrin concentration and stability of electrodes on the current responses of KCZ was studied. The linearity was obeyed over the concentration range (1–8 × 10−5 mole/l) with a common correlation coefficient and limit of detection of 0.9996 and 10.54 × 10−8, respectively, in pH 9 Britton–Robinson (BR) buffer. The modified electrode exhibited good sensitivity, and stability. The voltammetric method was successfully applied for the determination of KCZ in pure solution and in cosmetic preparation under batch condition

Novel in vitro and in silico insights of the multi-biological activities and chemical composition of Bidens tripartita L.

Bidens tripartita L. is a traditional phyto-remedy used in several countries, yet there is still a paucity of data on its biological potential. We aimed to provide new insights on the pharmacological potential of extracts prepared from B. tripartita via highlighting its antioxidant, key enzymes inhibitory potency, and DNA protecting effects. Phytochemical profile was established using High-Performance Liquid Chromatography with Diode-Array Detection (HPLC-DAD) and bioactive compound(s) docked against target enzymes using in silica methods. Cytotoxicity against three cancer cell lines was assessed using the methylthiazolyldiphenyl-tetrazolium bromide (MTT) cell viability test. The main compounds were luteolin-7-glucoside (cynaroside), chlorogenic acid, and epicatechin in the extracts. The methanol extract exhibited the highest radical scavenging activity. Ethyl acetate extract showed strongest a-amylase inhibitory activity, while the best a-glucosidase inhibitory effect recorded for the methanol extract. Molecular docking showed that cynaroside strongly interact to a-glucosidase cavity by establishing six hydrogen bonds. B. tripartita extracts were found to protect supercoiled form of pUC19 plasmid (>70%) and also showed anti-proliferative properties. Results amassed in the present study add on to a growing body of literature on the multi-pharmacological potency of B. tripartita which can be applied to bio-products development geared towards management of common diseases