Development of Biocomposites with Antioxidant Activity Based on Red Onion Extract and Acetate Cellulose
2015
López de Dicastillo, Carol | Navarro, Rosa | Guarda, Abel | Galotto, Maria José | Comisión Nacional de Investigación Científica y Tecnológica (Chile)
Antioxidant biocomposites have been successfully developed from cellulose acetate, eco-friendly triethyl citrate plasticizer and onion extract as a source of natural antioxidants. First, an onion extraction process was optimized to obtain the extract with highest antioxidant power. Extracts under absolute ethanol and ethanol 85% were the extracts with the highest antioxidant activity, which were the characterized through different methods, DPPH (2,2-diphenyl-1-picrylhydrazyl) and ABTS (2,2'-azinobis(3-ethylbenzothiazoline-6-sulphonate)), that measure radical scavenger activity, and polyphenolic and flavonoid content. Afterwards, the extract was incorporated in cellulose acetate as polymer matrix owing to develop an active material intended to oxidative sensitive food products packaging. Different concentrations of onion extract and plasticizer were statistically studied by using response surface methodology in order to analyze the influence of both factors on the release of active compounds and therefore the antioxidant activity of these materials.
Mostrar más [+] Menos [-]The authors acknowledge the Financial support of CONICYT through the Project FONDEF “Programa IDeA Ciencia Aplicada” (Project CA13I10334) and “Programa de Financiamiento Basal para Centros Científicos y Tecnológicos de Excelencia” (Project FB0807) and CONICYT Scholarship National PhD.
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Información bibliográfica
Este registro bibliográfico ha sido proporcionado por Instituto de Agroquímica y Tecnología de Alimentos