Synthesis and Evaluation of Zn-Al Layer Double Hydroxide for the Removal of Ochratoxin A. Greenness Assessment

MARIA DEL VALLE PONCE; MARIEL CINA; CARLOS LOPEZ; SOLEDAD CERUTTI

Analytical Methods

Royal Society of Chemistry

Año: 2022

1759-9679

The retention behavior of a dangerous toxin, ochratoxin A (OTA), present in food samples and derivatives was evaluated using Layered Double Hydroxides (LDHs). This nanomaterial composed mostly of zinc and aluminum was synthesized by the co-precipitation method and the obtained solid was characterized by different techniques, such as XRD, FTIR, TGA, SEM, and N2 adsorption–desorption isotherms. Experimental conditions were optimized by chemometric tools. Ochratoxin A determination wasperformed using an ultra-high-performance liquid chromatography (UHPLC) system coupled to tandem mass spectrometry. From the findings, quantitative removal of the mycotoxin was achieved. Thus, a novel, nanostructured, innocuous, low-cost, easily synthesized material, such as the Zn–Al layered double hydroxide, is proposed for ochratoxin A removal. This might represent an effective and sustainable approach with potential applications to different types of food and feed samples.