Casting and extrusion processes to produce bio-based plastics using cassava starch modified by the dry heat treatment (DHT)

Author(s)

La Fuente, Carla I. A. ^[1] ; Siqueira, Larissa do Val ^{[2, 3]} ; Duarte Augusto, Pedro Esteves ^{[2, 1, 4]} ; Tadini, Carmen C. ^{[2, 5, 3]}

Affiliation

^[1] Univ Sao Paulo, Sch Agr Luiz de Queiroz ESALQ, Dept Agrifood Ind Food & Nutr LAN, BR-13418900 Piracicaba, SP - Brazil

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

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

^[4] Univ Paris Saclay, Cent Supelec, Lab Genie Proc & Mat, SFR Condorcet FR CNRS 3417, Ctr Europeen Biotechno, 3 Rue Rouges Terres, F-51110 Pomacle - France

^[5] Univ Sao Paulo, Food Res Ctr FoRC NAPAN, Sao Paulo, SP - Brazil

• Document type: Journal article
• Source: INNOVATIVE FOOD SCIENCE & EMERGING TECHNOLOGIES; v. 75, JAN 2022.
• Web of Science Citations: 0

Abstract

Although the number of studies focused on bio-based plastics is constantly rising, an important challenge to overcome is migrating from casting to extrusion, an industrially scalable method of production. In this work, we studied starch modification by dry heating treatment (DHT) and the production of cassava starch films or sheets, by casting or extrusion processes, respectively. The molecular changes promoted by the DHT process resulted in a new matrix. Furthermore, the slower drying in casting, and the faster drying in extrusion, promoted different molecular arrangements, which affected the material performance. The main results showed that DHT for 4 h in cassava starch produced bio-based plastics with increased mechanical properties and opacity while decreasing water permeability, moisture content and light transmittance. In conclusion, DHT showed to be an interesting alternative to produce biodegradable plastics with potential use in different industries. (AU)

• FAPESP's process: 16/12385-2 - Development of low density polymer films for smart packaging
• Grantee: Carmen Cecilia Tadini
• Support Opportunities: Multi-user Equipment Program
• 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
• FAPESP's process: 19/21700-7 - Mathematical modeling and experimental validation of an extrusion process to produce biodegradable cassava starch pellets
• Grantee: Larissa do Val Siqueira
• Support Opportunities: Scholarships in Brazil - Doctorate (Direct)