New strategies to fabricate starch/chitosan-based composites by extrusion

Autor(es)

Rodriguez Llanos, Jaiber Humberto ^[1] ; Tadini, Carmen Cecilia ^{[2, 3]} ; Gastaldi, Emmanuelle ^[4]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Fac Anim Sci & Food Engn, Dept Food Engn, Fernando Costa Campus, BR-13635900 Pirassununga, SP - Brazil

^[2] Univ Sao Paulo, FoRC NAPAN Food Res Ctr, Sao Paulo, SP - Brazil

^[3] Univ Sao Paulo, Dept Chem Engn, Escola Politecn, Main Campus, BR-05508010 Sao Paulo, SP - Brazil

^[4] Montpellier SupAgro Univ Montpellier, INRA, CIRAD, UMR IATE, F-34070 Montpellier - France

• Tipo de documento: Artigo Científico
• Fonte: Journal of Food Engineering; v. 290, FEB 2021.
• Citações Web of Science: 4

Resumo

In this study, the impact of nanofillers on the performance of starch/chitosan composites produced by extrusion was investigated. Blends from three different proportions of starch/chitosan were produced and, for each blend, three different filler concentrations were tested. The natural -Na+ montmorillonite (Mt) and bamboo fibers were used as fillers. The composites were obtained using a twin-screw extruder from homo and nanostructured masterbatch pellets. The films were characterized concerning surface, mechanical, barrier, and thermal properties, as well as morphology and molecular changes. The results showed that the incorporation of Mt or bamboo fibers exhibited high water vapor barrier: films produced from only starch structured with 0.5 g Mt/100 g presented water vapor transmission of (4.9 +/- 1.3) g/h m(2), whereas films produced from starch/chitosan blend at proportion 75/25 structured with 1.0 g Mt/100 g presented (8.9 +/- 0.5) g/h m(2). Therefore, these materials showed competitiveness for their application to food packaging. (AU)

• Processo FAPESP: 14/01100-1 - Avaliação de blendas biopoliméricas nano-estruturadas na produção de filmes pelo método de extrusão
• Beneficiário: Jaiber Humberto Rodriguez Llanos
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 16/18157-1 - Blendas biopoliméricas nanoestruturadas obtidas pelo método de extrusão: desenvolvimento, caracterização e aplicação
• Beneficiário: Jaiber Humberto Rodriguez Llanos
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Doutorado
• Processo FAPESP: 13/07914-8 - FoRC - Centro de Pesquisa em Alimentos
• Beneficiário: Bernadette Dora Gombossy de Melo Franco
• Modalidade de apoio: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs