Elaboração de filmes ativos a partir de compostos de amêndoa de manga

Abstract

The waste generated by agroindustry is often disposed of inadequately to the environment, which causes pollution and represents waste of resources. Aiming at the integral use of material rich in compounds with high added value and application of the concept of biorefinery, this work was focused on studying the effects of fat and phenolic extract from mango kernels (Mangifera indica L.), cv. Tommy Atkins, on the properties of mango kernel starch films. A sequence of extractions was defined, starting with fat, followed by the phenol extract and finally the starch. After obtaining and characterizing each fraction, the films were prepared. Ten treatments were generated from a simplex centroid mixture design. The films were characterized in terms of water vapor barrier, mechanical, thermal and optical properties, antioxidant activity and morphological characteristics. The yields of each fraction were respectively 11, 17 and 39% evidencing the efficiency of the sequential process with values similar to those cited in the literature. Phenolic extract promoted improvements in water vapor barrier, UV light absorption and antioxidant activity, and also emprovedelongation. The fat incorporation promoted a higher opacity and a reduction in elastic modulus. The tensile strength was impaired with the individual and combined incorporation of fat and phenolics. It was possible to elaborate active and potentially biodegradable mango kernel starch films by adding fat and phenolics.