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Publicação
Decolorization of a corn fiber Arabinoxylan extract and formulation of biodegradable films for food packaging
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Orientador(es)
Resumo(s)
Corn fiber from the corn starch industry is a by-product produced in large quantity that
is mainly used in animal feed formulations, though it is still rich in valuable components, such as
arabinoxylans, with proven film-forming ability. During arabinoxylans’ recovery under alkaline
extraction, a dark-colored biopolymer fraction is obtained. In this work, a purified arabinoxylan
extract from corn fiber with an intense brownish color was decolorized using hydrogen peroxide as
the decolorizing agent. Biodegradable films prepared by casting the decolorized extract exhibited a
light-yellow color, considered more appealing, envisaging their application in food packaging. Films
were prepared with glycerol as plasticizer and citric acid as cross-linker. Although the cross-linking
reaction was not effective, films presented antioxidant activity, a water vapor permeability similar to
that of non-decolorized films, and other polysaccharides’ and mechanical properties that enable their
application as packaging materials of low-water-content food products
Descrição
Communication
Palavras-chave
corn fiber arabinoxylan decolorization biodegradable films food packaging
Contexto Educativo
Citação
Weng, V.; Brazinha, C.; Coelhoso, I.M.; Alves, V.D. Decolorization of a Corn Fiber Arabinoxylan Extract and Formulation of Biodegradable Films for Food Packaging. Membranes 2021, 11, 321
Editora
MDPI