Polyethylene Films Coated with Antibacterial and Antiviral Layers Based on CO2 Extracts of Raspberry Seeds, of Pomegranate Seeds and of Rosemary

Abstract

The main goal of the work was to create an internal coating based on super critical CO2 extracts of raspberry seeds, pomegranate seeds and rosemary that could be active against chosen bacterial strains. Additionally, the synergistic effect of these substances in the coating were then analysed. The next goal of the work was to demonstrate the antiviral activity of the coatings against phi6 bacteriophage particles (airborne viruses surrogate). The results of the study indicated that three coatings containing a mixture of extracts showed bacteriolytic activity against S. aureus cells and bacteriostatic activity against E. coli and B. subtilis strains. Two coatings showed bacteriolytic activity against a P. syringae strain. As a result of the experiments, a synergistic effect was noted in the active additives/compounds in the coatings. These coatings may be used as internal coatings for packaging films to extend the shelf life of selected food products. All seven coatings may also be used as external coatings with antiviral activity, as these coatings demonstrated significant effects on the phi6 phage, selected as a surrogate for airborne viruses, e.g., coronaviruses. It could be concluded that coatings I–VII will also show antiviral effects on SARS-CoV-2 particles.

Green-synthesized silver nanoparticle coating on paper for antibacterial and antiviral applications

“…During the COVID-19 pandemic, various packaging materials have been developed with incorporated antibacterial and antiviral properties. The coating of active compounds on packaging such as film, paper, and cardboard bags could address infection-related concerns of users and promote the safety use of such products [ 30 ]. The antibacterial and antiviral activities of paper coated with AgNPs are shown in Figs.…”

“…Although a number of studies have focused on green synthesis of AgNPs for various applications, particularly antibacterial activities, little information is found on antiviral activities and other properties. At present, considering that microbial pathogens such as viruses are also a major public health concern [ 28 ], the development of coating materials for the inhibition of microorganism growth could be a new and effective approach to prevent bacterial and viral infection [ 29 , 30 ].…”

Effect of the Nature of the Particles Released from Bone Level Dental Implants: Physicochemical and Biological Characterization

“…This surface generally presents important residual stress values due to the impact of the abrasive particles that have caused plastic deformation on the surface. The stresses suffered in these areas due to friction between the cortex and the implant cause the release of particles that fracture the surface of the dental implant [5,6].…”

Antimicrobial, Antibiofilm, and Antioxidant Activity of Functional Poly(Butylene Succinate) Films Modified with Curcumin and Carvacrol

“…The increasing bacterial resistance to antibiotics and the occurrence of foodborne infections, as well as the emergence of new mutations of microorganisms, pose a global threat to consumer health [11]. Moreover, oxidative degradation is the leading cause of food spoilage (after microbial growth), and the inclusion of natural antioxidants in food packaging is a way to improve the stability of oxidation-sensitive foods [12,13].…”

“…Moreover, oxidative degradation is the leading cause of food spoilage (after microbial growth), and the inclusion of natural antioxidants in food packaging is a way to improve the stability of oxidation-sensitive foods [12,13]. Therefore, developing new active packaging materials that can ensure the microbiological safety of food for consumers and extend the shelf life of products has become a challenge [11,14,15]. Such packaging systems typically use active ingredients derived from natural sources that exhibit antioxidant and/or antimicrobial activity [13,15,16] Carvacrol (2-methyl-5-(1-methylethyl)-phenol) is a monoterpene that, along with thymol, is contained in the essential oils of plants from the genus Origanum [17,18].…”