Nuclear chemistry

Sodium

Modified atmosphere

Bacteria

Biology

Carboxymethyl cellulose

Antibacterial activity

Lipid oxidation

Food science

Grape seed extract

Zinc

Food packaging

Alternative medicine

Genetics

Organic chemistry

Antioxidant

Medicine

Chemistry

Psychrotrophic bacteria

Active packaging

DPPH

ABTS

Shelf life

Pathology

Sustainable materials and technologies

CMC-based functional films incorporated with grape seed extract (GSE, 5 wt% of CMC) and zinc oxide nanoparticles (ZnONPs, 1, 2, and 3 wt% of CMC) were fabricated via the solution casting method. The addition of GSE provided an excellent antioxidant activity to the CMC-based films, exhibiting nearly 95% and 25% scavenging activity against ABTS and DPPH oxidative free radicals. It also gave the film 100% UV protection. On the other hand, the addition of ZnONPs increased the mechanical and water vapor barrier properties with potent antibacterial activity against foodborne pathogens, E. coli, and L. monocytogenes. High-fat beef was packaged in the CMC-based film and stored refrigerated for 15 days to investigate quality changes. The number of psychrotrophic bacteria in the meat wrapped with CMC/ZnO3%/GSE film was 5.9 Log CFU/g, within the acceptable range. In addition, the film virtually prevented lipid oxidation in the meat when refrigerated, reducing it by 88%. Therefore, the CMC/ZnO3%/GSE film can be used as a sustainable material in active packaging applications of high-fat meat products such as beef.

Carboxymethyl cellulose-based multifunctional film combined with zinc oxide nanoparticles and grape seed extract for the preservation of high-fat meat products