Ozonation of cassava starch to produce biodegradable films

Author(s)

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

Affiliation

^[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

• Document type: Journal article
• Source: International Journal of Biological Macromolecules; v. 141, p. 713-720, DEC 1 2019.
• Web of Science Citations: 1

Abstract

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)

• FAPESP's process: 18/24291-8 - Biodegradable films produced with ozone-modified cassava starch reinforced with nanocellulose
• Grantee: Andressa Tamyris de Souza
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• FAPESP's process: 16/18052-5 - +Pro²FOOD: emerging technologies to enhance food processing and properties
• Grantee: Pedro Esteves Duarte Augusto
• Support Opportunities: Regular Research Grants
• FAPESP's process: 17/05307-8 - Ozone-modified cassava starch to produce biodegradable films
• Grantee: Carla Ivonne La Fuente Arias
• Support Opportunities: Scholarships in Brazil - Post-Doctoral