Physicochemical characterization of starch based films

By M. A. Bertuzzi, M. Armada, J. C. Gottifredi. 2007

269 citations recorded by the source corpus.

Abstract In the present study, high amylose corn starch (HACS) based films were obtained with a low temperature method consisted on reduce gelatinization temperature by an alkaline pretreatment of starch. Effects of film composition and preparation method on film properties were investigated to identify HACS film elaboration conditions to improve film properties. Rheological behavior of film-forming solutions is reported. Films were physical and chemically characterized through film solubility in water, water sorption isotherms, opacity and crystallinity of films. Film forming suspensions show pseudoplastic and thixotropic behavior. Apparent viscosity of film forming gel increases exponentially with HACS concentration and Arrhenius law adequately represents variation with temperature. Alkaline treatment time of HACS previous to gelatinization, also affects film properties. It was found that film solubility and opacity decrease while crystallinity increases although it reaches an asymptotic value after treatment time of 60 min. Above 30% of glycerol, an increase in plasticizer content conduces to a looser network, as a result film opacity and water sorption increase.

Subfields: Biomaterials

View Paper: https://www.semanticscholar.org/paper/0f94a4001ca0d920091287262e50d33f426084a8

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In Biomaterials

1. A. Chiralt
2. A. Jiménez
3. M. Fabra
4. P. Talens
5. R. Avena-Bustillos
6. T. Mchugh
7. R. Bhat
8. Luiz H. C. Mattoso

Citations in the corpus

• Influence of natural fillers on the properties of starch-based biocomposite films (2013, unknown): “ical strength [5–8].”
• Improved barrier and mechanical properties of novel hydroxypropyl methylcellulose edible films with chitosan/tripolyphosphate nanoparticles (2009, background): “However, the hydrophilic nature of such packaging materials, which produces a loss of barrier properties or even a solubilization into foods with high-water activities, prevents their industrial applications (Bertuzzi et al., 2007).”
• Effect of Addition of Halloysite Nanoclay and SiO2 Nanoparticles on Barrier and Mechanical Properties of Bovine Gelatin Films (2012, background): “the flexibility of biopolymer films are also reported to impair the barrier properties (Bertuzzi et al. 2007; da Silva et al. 2009).”
• Edible and Biodegradable Starch Films: A Review (2012, methodology): “Many researchers have studied starch films obtained by casting (Bertuzzi et al. 2007a, b; Bourtoom and Chinnan 2008; Dias et al. 2010; Talja et al. 2007, 2008).”