Dairy protein-based biodegradable films for shelf life extension of produce
Innovative biodegradable films made from dairy proteins and cellulose enhance shelf life of fresh produce by reducing respiration and microbial spoilage. Incorporating antimicrobial enzymes further boosts their effectiveness. Suitable for commercial and household settings.
Overview
This innovative solution involves the development of biodegradable films composed of dairy proteins such as casein and whey protein isolate, combined with cellulose-based ingredients like methyl propyl cellulose or hydroxy methyl propyl cellulose. These films are designed to extend the shelf life of fresh produce by reducing oxygen and water vapor transmission, thereby delaying respiration and preventing microbial spoilage. The integration of antimicrobial enzymes into the film further enhances its ability to combat microbial activity, ensuring the freshness and safety of fruits and vegetables.
Technical specifications
Key features:
- Composite structure: Combines dairy proteins with cellulose-based materials for improved barrier properties.
- Antimicrobial enhancement: Incorporates enzymes to inhibit microbial growth on produce surfaces.
- Versatile application: Suitable for a variety of fresh produce, including tomatoes, cucumbers, and bananas.
- Extended shelf life: Reduces spoilage and maintains quality in both commercial and household storage conditions.
Technology readiness level
This technology is currently at Technology Readiness Level 4. It has been developed and validated in laboratory settings, with plans for further testing on select fresh produce to evaluate its effectiveness under real-world storage conditions.
About University of Minnesota
The University of Minnesota is a flagship, comprehensive public research university spanning multiple campuses, with a large research enterprise and clinical integration. Industry engages through co-located labs on the Twin Cities campuses, access to an academic health system for clinical translation, and pilot and field-testing facilities that speed scale-up. A statewide extension network and outreach centers provide real-world sites and data partnerships across Minnesota, while proximity to a dense medtech and Fortune 500 corridor enables frequent collaboration. Research is supported by competitive federal funding, including NIH, NSF, DOE, USDA, and DoD. A dedicated technology transfer office manages IP, licensing, sponsored research agreements, and startup incubation to speed commercialization.
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