Ozonation of cassava starch to produce biodegradable films

Autor(es)

La Fuente, Carla I. A. ^[1] ; de Souza, Andressa Tamyris ^[2] ; Tadini, Carmen C. ^{[3, 2, 4]} ; Duarte Augusto, Pedro Esteves ^{[3, 1]}

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Luiz Queiroz Coll Agr ESALQ, Dept Agrifood Ind Food & Nutr LAN, Piracicaba, SP - Brazil

^[2] Univ Sao Paulo, Escola Politecn, Dept Chem Engn, Main Campus, BR-05508010 Sao Paulo, SP - Brazil

^[3] Univ Sao Paulo, Food & Nutr Res Ctr NAPAN, Sao Paulo, SP - Brazil

^[4] Univ Sao Paulo, Food Res Ctr, FoRC NAPAN, Sao Paulo, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: International Journal of Biological Macromolecules; v. 141, p. 713-720, DEC 1 2019.
• Citações Web of Science: 1

Resumo

In this study, biodegradable films were produced from cassava starch modified by ozone at different levels. The films were produced by casting technique using native and ozonated cassava starch, glycerol as the plasticizer, and water as the solvent. Films were characterized in term of their mechanical, barrier and functional properties, morphology, crystallinity, colour, and opacity. The morphology of the ozonated films was more homogeneous in comparison to the films produced with the non-modified starch and enhanced properties were achieved. Films produced with ozonated cassava starch presented higher tensile strength, Young's modulus and lower elongation. The water vapour permeation and the oxygen permeation were increased by increasing the ozonation time. Moreover, ozone processing resulted in films with a more hydrophilic surface and lower solubility after 24 h. Possible explanations and applications were discussed. In conclusion, the ozone processing showed to be a good alternative for starch based packaging production. (C) 2019 Elsevier B.V. All tights reserved. (AU)

• Processo FAPESP: 18/24291-8 - Filmes biodegradáveis elaborados a partir de amido de mandioca modificado por ozônio reforçados com nano-celulose
• Beneficiário: Andressa Tamyris de Souza
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica
• Processo FAPESP: 16/18052-5 - +Pro²FOOD: tecnologias emergentes para melhoria de processos e propriedades de alimentos
• Beneficiário: Pedro Esteves Duarte Augusto
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 17/05307-8 - Modificação de amido de mandioca por oxidação com ozônio para a elaboração de filmes biodegradáveis
• Beneficiário: Carla Ivonne La Fuente Arias
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado