Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/48858
Title: Effect of the incorporation of lignin microparticles on the properties of the thermoplastic starch/pectin blend obtained by extrusion
Keywords: Extrusion
Biodegradable
Antioxidant
Micropartículas de ligninas
Amido termoplástico
Blendas de pectina
Issue Date: Jun-2021
Publisher: Elsevier
Citation: BEGALI, D. de O. et al. Effect of the incorporation of lignin microparticles on the properties of the thermoplastic starch/pectin blend obtained by extrusion. International Journal of Biological Macromolecules, [S. I.], v. 180, p. 262-271, June 2021. DOI: https://doi.org/10.1016/j.ijbiomac.2021.03.076.
Abstract: The present study aimed to produce thermoplastic starch films with different concentrations of thermoplastic pectin and the addition of 4% lignin microparticles as a reinforcing and active agent. The pectin improved the modulus of elasticity, and decreased the elongation at break. In addition, it improved the UV light protection to 100% at 320 nm and 95.9% at 400 nm. The incorporation of lignin microparticles improved the thermal stability of the blends made with 25% and 50% thermoplastic pectin when compared to the pectin-free blends. The blend with 25% thermoplastic pectin led to an increase of 75.8% and 34% in elongation at break and deformation of the films, respectively. This blend also improved the UV light protection to 100% due to its dark brown color. Regarding the permeability properties, the films with 25% and 50% thermoplastic pectin showed lower oxygen permeability (48% and 65%) and an increase in the antioxidant activities from 2.7% to 71.08% and 4.1% to 79.28%, respectively. Thus, the polymer blend with 25% thermoplastic pectin with the incorporation of lignin microparticles proved to be a good alternative for use in foods sensitive to the effects of oxygen and UV light.
URI: https://doi.org/10.1016/j.ijbiomac.2021.03.076
http://repositorio.ufla.br/jspui/handle/1/48858
Appears in Collections:DEG - Artigos publicados em periódicos

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