Edible fungal biosurfactant-chitosan coatings to extend fruit shelf-life
Innovative edible coatings using fungal biosurfactant and chitosan extend fruit shelf-life by reducing microbial growth and water loss. This sustainable solution leverages electrostatic interactions for enhanced fruit preservation.
Overview
Our research proposes a novel edible coating that combines microbial biosurfactants with fungal chitosan to significantly extend the shelf-life of fresh fruits. By effectively reducing microbial growth, minimizing water loss, and delaying physiological disorders, this coating provides a sustainable solution for fruit preservation. The key to its efficacy lies in the synergistic interaction between negatively charged sulfate groups in the biosurfactant and positively charged amino groups in the chitosan, enhancing stability and adhesion to fruit surfaces.
Technical specifications
- Composition: The coating is prepared by dissolving chitosan in a solution with biosurfactant, using water or a 1% acetic acid or citric acid solution, with pH adjusted to 6.0.
- Application Method: The coating is applied to fruits by immersion.
- Benefits: Improved antimicrobial activity, enhanced solubility of chitosan, and a stable system that acts as an effective barrier against spoilage.
- Sustainability: The production process uses fungal biomass with lower energy consumption and environmentally friendly solvents.
Technology readiness level
This technology is currently at TRL 2, with ongoing efforts to determine the optimal formulation and validate its effectiveness on various perishable fruits such as strawberries, grapes, and guavas. Collaboration with research institutes and the availability of laboratory resources support further development.
About Universidade Federal de Pernambuco
Universidade Federal de Pernambuco (UFPE) is a comprehensive public research university in Recife, serving Pernambuco and Brazil’s Northeast with sizable enrollment and a strong applied research culture. Industry engages through shared-use labs, prototyping spaces, and testbeds, plus clinical research integrated with its university hospital. Its proximity to Recife’s established technology district supports internships, embedded company teams, and joint development with startups and global firms in the region. Research is supported by competitive Brazilian funding from agencies such as CNPq, CAPES, FINEP, and the Pernambuco state foundation, alongside corporate and international partners. A dedicated technology transfer office manages IP, licensing, and startup formation, connecting companies to faculty expertise and talent pipelines.
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