The aim of this project is to design and investigate new biopolymer systems as carriers of natural bioactive compounds with antioxidant and/or antimicrobial properties, to apply them for food packaging and assess their performance. The polysaccharide matrices will be obtained by the means of chemical modification of natural polysaccharides. Afterwards, the bioactive compounds immobilization in biopolymer matrices methods will be determined and their interactions, the kinetics, thermodynamics of the processes, the bioactivity and bioavailability will be examined.