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Besides being known by food and perfume industries, vanillin has also important pharmacological properties such as anti-inflammatory and antibacterial activities. The use of magnetic nanoparticles as carriers for a vanillin delivery system is a way to explore its benefits in human beings. In this paper, poly(lactic-co-glycolic acid) (PLGA) nanoparticles stabilized by poly(vinyl alcohol) (PVA) and containing magnetic CoFe 2 O 4  and vanillin have been prepared using a double emulsion-solvent evaporation method. The morphology, particle size, structure, and surface properties of the nanoparticles were investigated by transmission electron microscopy, zeta-potential measurements, X-ray diffractometry, Fourier transform infrared spectroscopy, magnetic hysteresis loops, and thermogravimetric analysis. The spherical nanoparticles presented negative charge, with zeta-potential values ranging from −9.15 to −5.64 mV, high thermal stability, superparamagnetic properties, and excellent encapsulation of the vanillin (around 80%). Accordingly, such PLGA/PVA nanoparticles encapsulating vanillin and CoFe 2 O 4  exhibited the desired features to suggest their potential use as drug delivery systems.

Poly-(lactic-co-glycolic acid) /poly-(vinyl alcohol) and cobalt ferrite magnetic nanoparticles as vanillin carriers