A Review on Biodegradable Starch Based Film

Abstract

In recent years, biodegradable edible films have become very important in research related to food, due to their compatibility with the environment and their use in the food packaging industry. Various sources can be used in the production of biopolymers as biodegradable films that include polysaccharides, proteins and lipids. Among the various polysaccharides, starch due to its low price and its abundance in nature is of significant importance. Several factors affect the properties of starch films; such as the source which starch is obtained from, as well as the ratio of constituents of the starch. Starch films have advantages such as low thickness, flexibility and transparency though; there are some downsides to mention, such as the poor mechanical properties and water vapor permeability. Thus, using starch alone to produce the film will led to restrictions on its use. To improve the mechanical properties of starch films and also increases resistance against humidity, several methods can be used; including the starch modifying techniques such as cross linking of starch and combining starch with other natural polymers. Other methods such as the use of lipid in formulations of films to increase the resistance to moisture are possible, but lipids are susceptible to oxidation. Therefore, new approaches are based on the integration of different biopolymers in food packaging.

Dynamic Rheological and Textural Properties of Acorn (Quercus brantii Lindle.) Starch: Effect of Single and Dual Hydrothermal Modifications

“…Both modifications do not result in gelatinization but modify the granular structure of starch to different extents . The hydrothermally modified starches may be applied to different food technologies like canning, noodle industries, biodegradable films, and etc.…”

Steady Shear Rheological Properties of Native and Hydrothermally Modified Persian Acorn (Quercus brantii Lindle.) Starches

“…Both treatments result in structural changes within the amorphous and crystalline regions to different extents . Hydrothermally modified starches have been used in some industries like canning, frozen foods, and fat replacer technology; pouch packed, and resistant starch production; and biodegradable films …”

Can Sustainable Packaging Help to Reduce Food Waste? A Status Quo Focusing Plant-Derived Polymers and Additives

“…Many plantbased polysaccharides and cost-effective starch-based materials have been extensively investigated as an alternative material for fossil-based food packaging applications due to their environmental compatibility and biodegradability [198]. Although starch-based packaging, which has good film-forming properties and excellent oxygen barrier, is already in wide use, this material still has some disadvantages such as the poor vapor and oxygen moisture barrier and poor mechanical properties compared to conventional non-biodegradable plastics used in food packaging industry (Tables 1 and 4) [198][199][200][201].…”