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Solvent-free synthesis of acetylated cashew gum for oral delivery system of insulin

2018; Elsevier BV; Volume: 207; Linguagem: Inglês

10.1016/j.carbpol.2018.11.071

1879-1344

Eliadna de Lemos Vasconcelos Silva, Antônia Carla de Jesus Oliveira, Yuri Basílio Gomes Patriota, António J. Ribeiro, Francisco Veiga, Fernando Hallwass, Edson C. Silva-Filho, Durcilene Alves da Silva, Mônica Felts de La Roca Soares, Almir Gonçalves Wanderley, José Lamartine Soares‐Sobrinho,

Biofuel production and bioconversion

Cashew gum (CG) is a biopolymer that presents a favorable chemical environment for structural modifications, which leads to more stable and resistant colloidal systems. The gum was subjected to an acetylation reaction using a fast, simple, solvent-free and low cost methodology. The derivative was characterized by infrared and NMR spectroscopy, elemental analysis, coefficient of solubility and zeta potential. The modified biopolymer was used as a platform for drug delivery systems using insulin as a model drug. Nanoparticles were developed through the technique of polyelectrolytic complexation and were characterized by size, surface charge, entrapment efficiency and gastrointestinal release profile. The nanoparticles presented size of 460 nm with a 52.5% efficiency of entrapment of insulin and the electrostatic stabilization was suggested by the zeta potential of + 30.6 mV. Sustained release of insulin was observed for up to 24 h. The results showed that acetylated cashew gum (ACG) presented potential as a vehicle for sustained oral insulin release.