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Nanotechnology is making exceptional progress in the medical field. The development of new systems for the delivery of plant ingredients brings benefits such as good bioavailability, solubility, sustained release, and enhanced potential. To the best of our knowledge, there is no report on nanocomposites from Tetrapleura tetrapteradespite its wide range of ethnopharmacological uses including management of inflammatory diseases. This study aimed to prepare chitosan- and cellulose-based nanocomposites with anti-inflammatory potential. The biocomposites showed an encapsulation efficiency of 69.4%. Their formation was confirmed by a peak at 290 nm in UV–Vis. Infrared spectrophotometry proved the formation of a mixed polysaccharide and polyphenol system. No signs of toxicity and no deaths were found; therefore, the lethal dose 50 (LD50) is higher than 2000 mg/kg. The biocomposite has an anti-inflammatory activity in vitro with a maximum inhibition of 99.5% and an anti-inflammatory activity in vivo with a maximum inhibition of 98.7% for a dose of 200 mg/kg. The synthesized biocomposites from the aqueous extract of the fruits of Tetrapleura tetrapterashowed an anti-inflammatory property with satisfactory safety.

Powder X-ray diffraction and dynamic light scattering (DLS) sizing of silver (Ag) and palladium (Pd) nanoparticles produced within aqueous plant extract and the effect of introducing of an ionic liquid are reported in this paper. The simple and novel synthesis of silver and palladium nanoparticles using the reducing power of Persea americana(Pa) bark extract is reported and the effect of adding 1-ethyl-3-methylimidazolium tosylate [EMIm][Tos] is described. Detailed powder X-ray interpretation allowed determination of the crystalline grain sizes of 16±4nm for Ag–Pa, 13±2nm for Ag–Pa[EMIm][Tos], 16±3nm for Pd–Pa and 9±1nm for Pd–Pa[EMIm][Tos] according to the Scherrer peak analysis. A size contraction occurs when moving from plant extract alone to plant extract/ionic liquid. These grain sizes are 9nm for Ag–Pa and for 9nm Ag–Pa[EMIm][Tos], 15nm for Pd–Pa and 7nm for Pd–Pa[EMIm][Tos] when the Williamson–Hall plot intercept is used. Modal hydrodynamic sizes were determined by DLS as 57nm for Ag–Pa, 72nm for Ag–Pa[EMIm][Tos], 390nm for Pd–Pa and 98nm for Pd–Pa[EMIm][Tos] providing indications on how the particles behave in solution. Intrinsic stresses of 0.177GPa for Ag–Pa, 0.219GPa for Ag–Pa[EMIm][Tos], 0.382GPa for Pd–Pa and 0.190GPa for Pd–Pa[EMIm][Tos] and dislocation densities of (6±3)×10−3nm−2for Ag–Pa, (9±3)×10−3nm−2for Ag–Pa[EMIm][Tos], (5±2)×10−3nm−2for Pd–Pa and (16±4)×10−3nm−2for Pd–Pa[EMIm][Tos] have been obtained.