DOI - Mendel University Press

DOI identifiers

DOI: 10.11118/978-80-7701-100-6-0181

ANTIOXIDAČNÉ A MECHANICKÉ VLASTNOSTI BIODEGRADOVATEĽNÝCH OBALOV NA BÁZE KARAGÉNANU S PRÍDAVKOM KÁVOVEJ USADENINY

ANTIOXIDANT AND MECHANICAL PROPERTIES OF CARRAGEENAN-BASED BIODEGRADABLE PACKAGING WITH SPENT COFFEE GROUNDS ADDITION

Dominika Kotianová1, Valeriia Kovtun1, Tomáš Pencák1, Dani Dordević1, Bohuslava Tremlová1
1 Ústav hygieny a technologie potravin rostlinného původu, Fakulta veterinární hygieny a ekologie, Veterinární univerzita Brno, Palackého tř. 1946/1, 612 42 Brno, Česká republika


The utilization of food industry by-products in the production of biodegradable packaging represents a perspective approach to reducing environmental impact and optimizing functional properties of packaging materials. This study evaluates the effect of adding dried spent coffee grounds (SCG) on the mechanical properties and polyphenol content of κ-carrageenan-based biodegradable packaging. Packaging materials were prepared with various SCG concentrations (0.1–0.75%) and compared to a control sample without the additive. Mechanical properties were evaluated by determining tensile strength and toughness using texture analysis, while the total polyphenol content (TPC) was determined spectrophotometrically. The results demonstrated that the addition of SCG led to a statistically significant (p < 0.05) increase in polyphenol content in all enriched samples compared to the control, with values rising alongside the increasing concentration of SCG. Regarding mechanical properties, a statistically significant (p < 0.05) increase in material toughness was recorded depending on SCG concentration, whereas changes in tensile strength were not statistically significant (p > 0.05). The results demonstrate that SCG addition enhances the functional properties of carrageenan packaging, advancing its potential for practical industry applications.

Keywords: SCG, carrageenan, circular economy, TPC, sustainable packaging

pages: 181-187, online: 2026



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