Publications by authors named "Edson C S Filho"
Influence of Reduction with NaBH and HCl in Obtaining Amino Derivatives of Cashew Gum and Cytotoxic Profile.
Francisco das C M Brito Wilton C Lopes Fábio O S Ribeiro Raiza Raianne Luz Rodrigues Klinger Antonio da França Rodrigues José Delano Barreto Marinho Filho Edson C S Filho
Polymers (Basel)
June 2023
Article Synopsis
- Tree-exuded gums, particularly cashew gum from Anacardium trees in Brazil, are valuable natural polymers used in food and pharmaceuticals, known for their useful properties like hydro-solubility.
- Researchers aimed to enhance the properties of cashew gum by chemically modifying it through an amine reaction, which was verified using various analytical techniques, including NMR and infrared spectroscopy.
- The modification improved the gum's molar mass and thermal stability without inducing cytotoxic effects on macrophage cells at concentrations lower than 50.0 mg/L.
Crystalline cellulose chemically modified through a reaction with sodium trimetaphosphate (STMP) in an acidic or basic condition yielded Cel-P4 and Cel-P10. These phosphated solids were characterized by elemental analysis, X-ray diffraction (XRD), infrared (IR) spectroscopy, scanning electron microscopy (SEM), nuclear magnetic resonance (NMR) at the solid state for phosphorus nucleus and dispersive X-ray energy. The elemental results demonstrated that the phosphorylation reaction was more efficient in the basic medium, as supported by the amount of phosphorous content.
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