DEVELOPMENT OF ANTIOXIDANT POLY(THIOETHER-ESTER) NANOPARTICLES

Abstract Poly(Thioether-Ester) nanoparticles synthetized via thiol-ene polymerization from a renewable castor oil monomer are produced by miniemulsion polymerization and emulsification/evaporation of pre-formed polymer. Its antioxidant activity, probably due to the oxidation of sulfide groups, is confirmed by 2,2-diphenyl-1-picryl hydrazyl (DPPH) free radical-scavenging and β-carotene/linoleic acid assays, with an amount of polymer required to reduce the initial concentration of DPPH· radicals by 50% of ~195 µg.ml-1 promoting hydrogen or electron exchange and the capability to prevent lipid peroxidation of ~55%. The results show a promising application in food packing.

Bibliographic Details

Main Authors:	Meneses,Alessandra Cristina de, Machado,Thiago Ouriques, Sayer,Claudia, Araújo,Pedro Henrique Hermes, Oliveira,Débora de
Format:	Digital revista
Language:	English
Published:	Brazilian Society of Chemical Engineering 2018
Online Access:	http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322018000200691
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