A Review on Material and Antimicrobial Properties of Soy Protein Isolate Film

• Published in: Journal of polymers and the environment Vol. 27; no. 8; pp. 1613 - 1628
• Main Authors: Rani, Shikha, Kumar, Rakesh
• Format: Journal Article
• Language: English
• Published: New York Springer US 01-08-2019; Springer Nature B.V
• Subjects: Additives; Antiinfectives and antibacterials; Antimicrobial agents; BIODIESEL FUELS; Biofuels; Chemistry; Chemistry and Materials Science; Compression; COPPER PHOSPHATES; Environmental Chemistry; Environmental Engineering/Biotechnology; Food industry; Food packaging; FOOD PROCESSING; Food processing industry; Industrial Chemistry/Chemical Engineering; MANUFACTURING; Manufacturing industry; Material properties; Materials Science; MECHANICAL PROPERTIES; NANOPARTICLES; Packaging; Polyethylene; POLYETHYLENES; Polymer Sciences; Polymers; POLYPROPYLENE; Pressure casting; Pressure molding; Proteins; RADIATION CHEMISTRY, RADIOCHEMISTRY AND NUCLEAR CHEMISTRY; Renewable resources; Review; Soy products; Sustainable yield; SYNTHETIC MATERIALS; Nanoparticles; Acid additives; Natural compounds; Mechanical properties; Hydrophobicity; Antimicrobial properties; Soy protein isolate
• ISSN: 1566-2543; 1572-8919
• DOI: 10.1007/s10924-019-01456-5

In twenty first century, there is an increasing demand for packed food which requires packaging films. At present, these packaging films are processed from synthetic polymers such as polyethylene, polypropylene and many other synthetic polymers. But we need to start using soy protein as sustainable antimicrobial film that can be used for packaging purposes. There is abundance and high availability of soy protein isolate (SPI) as by-product from industries, such as food processing or biodiesel production. Soy based films from renewable resources can offer a more suitable alternative to films fabricated from synthetic materials. Soy based films in presence of additives such as acidic compounds, nanoparticles and natural compounds have good mechanical properties and are transparent in nature. In addition, soy based film in presence of 2,2-diphenyl-2-hydroxyethanoic acid and copper phosphate can give lotus-like structure as evidenced from morphological studies. Also the manufacturing process (solution casting and compression molding) of SPI film in the presence or absence of additives is very easy and commercially feasible. It is worth noting that SPI films can be produced at laboratory scale by both casting and compression molding methods. In this review paper, we have focused on the material properties as well as antimicrobial properties of SPI based films in the presence of natural and synthetic additives as reported in the last 20 years.