Gold Nanoparticle-Modified Molecularly Imprinted Polymer-Coated Pencil Graphite Electrodes for Electrochemical Detection of Bisphenol A.

The sensitive Bisphenol A (BPA) detection by an electrochemical sensor based on gold nanoparticle-doped molecularly imprinted polymer was successfully improved. This study describes the development of a method for BPA detection in both aqueous solution and real water samples using N-methacroyl-(L)-cysteine methyl ester and N-methacryloyl-(L)-phenylalanine methyl ester coated pencil graphite electrodes modified with AuNPs by differential pulse voltammetry (DPV). Importantly, AuNPs, which increase the electroactivity, were used to increase the surface area of a BPA-imprinted pencil graphite electrode (MIP PGE) sensor.

Antioxidant and antimicrobial chitosan films enriched with aqueous sage and rosemary extracts as food coating materials: Characterization of the films and detection of rosmarinic acid release.

Chitosan films containing aqueous extracts of sage and rosemary were prepared as a potential food coating material with antioxidant and antibacterial properties. The effect of adding extracts at different concentrations on the mechanical, physical, and optical properties of the films was investigated. The addition of the extracts significantly increased Young's modulus values of the films compared to the chitosan film, and a significant decrease was observed in the swelling percentage and water vapor permeability of the films.

Internalized homophobia and depression levels in LGBT individuals.

Purpose: This study was conducted to evaluate internalized homophobia and depression levels in LGBT individuals.

Design And Methods: This descriptive study, conducted between June and October 2018, included 110 LGBT individuals.

Findings: The mean Beck Depression Inventory total score of LGBT individuals was 3.