02384naa a2200325 a 450000100080000000500110000800800410001902400630006010000280012324501350015126000090028652013740029565000120166965000150168165300180169665300380171465300240175265300180177665300210179465300200181565300230183565300210185865300140187965300280189370000200192170000180194170000220195970000180198177300590199921084282023-07-04       2019    bl uuuu     u00u1 u    #d7 aDOI: http://dx.doi.org/10.1590/1980-5373-MR-2019-00572DOI1 aNASCIMENTO, J. A. de A.  aStability of nanocomposite edible films based on polysaccharides and vitamin C from agroindustrial residue.h[electronic resource]  c2019  aThe agroindustrial residue from the production of acerola pulp is rich in residual vitamin C. Thus, aiming its extraction and stabilization, this work proposed the nanoparticle (NP) encapsulation via ionic gelation with subsequent preparation of nanocomposites (NC) film based on galactomannan matrix. NP were characterized and their stabilities were evaluated under different storage conditions (incidence of light, temperature and oxidizing atmosphere). The results by Dynamic Light Scattering (DLS) and Scanning Electron Microscopy (SEM) indicated homogeneous morphology, spherical shape and size of ~220 nm. Regarding the stability, the UV-visible spectrophotometric analysis showed a much lower degradation rate for encapsulated vitamin C, resulting in more than 30% of preservation compared with the non-encapsulated systems at the end of 15th day of storage. In agreement, the NC films also resulted in preservation of vitamin C mainly for the test in high temperature, which maintained about 80% of the initial concentration, whereas in the non-encapsulated condition this value fell to 45%. The morphological analysis of these films by SEM indicated good distribution of the NP in the galactomannan matrix. Thus, the results indicate the feasibility of using the ncapsulation method to estabilize vitamin C extracted from the agroindustrial residue of acerola.  aAcerola  aVitamina C  aAgroindustria  aEncapsulamento de nanopartículas  aFilmes comestíveis  aGalactomanana  aGoma de mesquite  aNanocompósitos  aNanoencapsulação  aPolpa de acerola  aQuitosana  aResíduo Agroindustrial1 aGOMES, L. K. S.1 aDUARTE, D. S.1 aLIMA, M. A. C. de1 aBRITTO, D. de  tMaterials Researchgv. 22, n. 3, e20190057, Mar. 2019.