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Brito, Francisco das C. M; Lopes, Wilton C; Ribeiro, Fábio O. S; Rodrigues, Raiza Raianne Luz; França Rodrigues, Klinger Antonio da; Santos Machado, Fabrício dos; Araújo, Ana Jérsia; Marinho Filho, José Delano Barreto; Oliveira, Antônia Carla J; Filho, Edson C. S; Ribeiro, Irisvan S; Paula, Regina C. M. de; Hallwass, Fernando; Viana, Vicente Gálber F; Silva, Durcilene A
Polymers, 06/2023, Letnik: 15, Številka: 13Journal Article
Tree-exuded gums are natural polymers that represent an abundant raw material in the food and pharmaceutical industries. The cashew gum can be obtained by exudation of trees of the genus Anacardium, a native species of the Brazilian northeast; its polymer consists of monosaccharide units propitious to the action of chemical reactions that tend to improve their intrinsic characteristics among them, as the degree of hydro-solubility. The objective of this work was to modify the exudate gum of Anacardium occidentale (cashew gum (CG)) through an amine reaction. The modification was confirmed by Nuclear Magnetic Resonance (sup.1H NMR), infrared spectroscopy (FTIR), gel permeation chromatography (GPC), zeta potential, and thermogravimetric analysis (TG). In addition, the chemical modification altered the molar mass and surface charge of the CG, and the amino group binding to the CG polymers was confirmed by FTIR spectra. In addition, cytotoxicity tests were performed where cell viability was estimated by an MTT assay on RAW 264.7 macrophages. Through these tests, it was found that the amine caused an increase in the thermal stability of the amino compounds and did not present cytotoxic potential at concentrations below 50.0 mg/L.
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