Novel reusable and switchable deep eutectic solvent for extraction and determination of curcumin in water and food samples

Edible oil-based switchable-hydrophilicity solvent liquid–liquid microextraction prior to smartphone digital image colorimetry for the determination of total curcuminoids in food samples

“…Sample preparation has always been a major challenge in analytical chemistry. Liquid–liquid extraction, 19 solid–liquid extraction, 20 solid-phase extraction, 21 ionic liquid-dispersive liquid–liquid microextraction, 22 deep eutectic solvent-based extraction, 23 homogeneous liquid–liquid microextraction, 12 switchable-deep eutectic solvent microextraction, 24,25 cloud point microextraction, 26 supramolecular solvent liquid–liquid microextraction, 18 and enzyme-assisted extraction 27 have been proposed for the extraction of curcumin from a variety of samples. Despite the advantages offered by such methods, there is still a continuous demand for greener sustainable solvents to replace toxic ones and expand the list of environmentally benign substituents.…”

Fluorescent probe for Fe3+ detection based on a guest molecular luminescent metal–organic framework

“…4 Fluorescence detection, a method used to indicate the content of a substance through changes in the photoluminescence intensity of a fluorescent material, can be used to detect a particular substance through rational design and has the advantages of less interference, simple operation, high sensitivity and low cost. [5][6][7] Metal-organic frameworks (MOFs) are self-assembled from metal ions and organic ligands with high porosity, specific surface area, and good structural stability. 8 One class of MOFs with optical properties is known as luminescent metal-organic framework (LMOFs), where fluorescence can come from metal centers, organic ligands, and guest molecules and has been used to identify and detect environmental pollutants such as metal cations, anions, biomolecules, and pesticides in the environment.…”