Edible and Biodegradable Starch Films: A Review

By A. Jiménez, M. Fabra, P. Talens, A. Chiralt. Food and Bioprocess Technology, 2012

555 citations recorded by the source corpus.

Mainly due to environmental aims, petroleum-based plastics are being replaced by natural polymers. In the last decades, starch has been evaluated in its film-forming ability for applications in the food packaging area. Characteristics of the starch film matrices, the film formation methods, and physicochemical properties of the starch films are reviewed in this paper. The influences of different components added in casting methods and thermoplastic processes have been also analyzed. Comparison of mechanical properties of newly prepared starch films and stored films reveals that the recrystallization phenomenon made the films more rigid and less stretchable. These effects can be inhibited by adding other polymers to the starch matrix. Other approaches to improve the starch films’ properties are the reinforcement by adding organic or inorganic fillers to the starch matrix as well as the addition of functional compounds. In this way starch films have improved mechanical and barrier properties and can act as a bioactive packaging. Physicochemical properties of the starch films showed a great variability depending on the compounds added to the matrix and the processing method. Nevertheless, dry methods are more recommendable for film manufacturing because of the greater feasibility of the industrial process. In this sense, a better understanding of the nano and microstructural changes occurring in the matrices and their impact on the film properties is required.

Subfields: Biomaterials

View Paper: https://www.semanticscholar.org/paper/718a1fbaa5b2c3d129c7ffc4b1a720d9997e8391

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In Biomaterials

Citations in the corpus

Composites of Wood and Biodegradable Thermoplastics: A Review (2018, background): “lower tensile strength and elongation at break when compared to PP and PE but the applications of plasticizers and polymer blends can improve its properties.(18) The material properties of P(3HB) can also be tailored through the inclusion of other monomers, such as 3-hydroxyvalerate.”
Properties and ageing behaviour of pea starch films as affected by blend with poly(vinyl alcohol) (2015, unknown): “Finally, glycerol was added at a 131 starch:glycerol ratio of 1:0.25, on the basis of previous studies (Jiménez et al., 2012b).”
Structural and mechanical properties of edible films made from native and modified cush-cush yam and cassava starch (2015, background): “This could explain the tendency of theWVP to increase in cassava starch films (Table 1). Saavedra and Algecira (2010) proposed that cassava starchprotein films have higher elasticity values due to their more compact structure.”
Biodegradable polymer films from seaweed polysaccharides: A review on cellulose as a reinforcement material (2017, methodology): “This method is commonly known as a wet process [108].”