Carrageenan-based active coatings for extending shelf life of fresh produce
Carrageenan-citric acid coatings enhance the preservation of fresh produce by reducing microbial growth and maintaining quality, extending shelf life. Applicable for whole or pre-cut fruits and vegetables, this innovation offers a natural solution to spoilage.
Overview
Carrageenan-based active coatings, known as CARRAC, are designed to extend the shelf life of fresh produce by leveraging the natural preservative properties of carrageenan and citric acid. This innovative solution reduces microbial growth and preserves texture, color, and nutritional quality, acting as a barrier to moisture loss and oxygen. The coatings are suitable for both whole and pre-cut fruits and vegetables, offering a natural alternative to synthetic preservatives.
Technical specifications
Key features:
- Carrageenan: A polysaccharide derived from red algae, forming an edible coating that minimizes moisture loss and acts as an oxygen barrier.
- Citric Acid: A natural antimicrobial and antioxidant that inhibits microbial growth and enzymatic browning.
- Applications: Effective for various fresh produce, including berries, grapes, sliced avocado, pineapple chunks, apple slices, and clementine pieces.
Benefits:
- Extends shelf life by reducing spoilage and oxidation.
- Maintains quality during storage and transport.
- Natural and food-safe alternative to synthetic preservatives.
Technology readiness level
The technology is currently at TRL 5, with laboratory validation completed on fresh-cut pear slices. Future validation involves optimizing formulations for different produce types and assessing effectiveness in real-world conditions. Partnerships are sought for equipment and funding to further advance this innovation.
About Universiti Putra Malaysia
Universiti Putra Malaysia (UPM) is a comprehensive public research university in Serdang, Greater Kuala Lumpur, with a campus that integrates classroom, laboratory, and field-testing environments. Companies engage through co-located labs, on-campus testbeds, and university-run farms that enable prototyping and trials close to production supply chains. Health system integration and proximity to Putrajaya’s ministries and the Cyberjaya tech corridor facilitate collaboration and timely access to partners. Research is supported by competitive funding from Malaysia’s Ministry of Higher Education, the Ministry of Science, Technology and Innovation, and international sponsors. A dedicated technology transfer office manages IP, licensing, and startup support, connecting companies with faculty expertise and specialized facilities.
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