Biodegradable chitosan and gum arabic films enhanced with ionic liquids from essential oils
Introducing biodegradable films made from chitosan and gum arabic, enhanced with ionic liquids derived from natural sources like eugenol and cinnamic acid. These films offer improved microbiological properties for food applications, addressing environmental sustainability.
Overview
This solution involves the development of biodegradable films composed of chitosan and gum arabic, enhanced with ionic liquids (ILs) derived from natural sources such as eugenol and cinnamic acid. The incorporation of these ILs aims to improve the microbiological properties of the films, making them suitable for food applications. This innovative approach addresses the socio-environmental issues related to non-renewable film sources by providing a biodegradable alternative.
Technical specifications
The films are synthesized by introducing ILs into aqueous dispersions of chitosan and gum arabic. Four ILs were synthesized: two with the choline cation and two with the ethyl-methyl-imidazole cation. The films have undergone thermal analyses (TGA and DSC), contact angle, and AFM measurements. Future steps include evaluating physical properties like tensile strength and elasticity, as well as microbiological activity and toxicity. The films are currently being tested for application in food matrices to assess performance enhancements.
Technology readiness level
This technology is at TRL 4, with laboratory validation completed. Further development will focus on testing increased thicknesses, different base matrices, and comprehensive evaluation of physical and microbiological properties.
About Universidade Federal de Santa Maria
UFSM is a comprehensive, multi‑campus public research university based in Santa Maria, Rio Grande do Sul. Industry engages via the university’s innovation, science and technology park and two incubators that co‑locate startups with faculty and students; capstone projects can be completed inside resident companies. Clinical collaboration is enabled by the University Hospital of Santa Maria within Brazil’s federal hospital network. Research is supported by competitive funding from national and state agencies such as CNPq, CAPES, FINEP and FAPERGS. A dedicated technology transfer office manages IP, licensing and university–industry agreements, under a pro‑rectory focused on innovation and entrepreneurship.
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