Modified Hairy Nanocrystalline Cellulose as Photobactericidal Nanofillers for Food Packaging Application

Photobactericidal hairy nanocrystalline cellulose was developed as a bioinspired nanofiller for engineering self-disinfecting food packaging. A new version of nanocellulose functionalized with high density primary amine group called aminated (ANCC) synthesized. As natural photosensitizer, rose bengal (RB) then covalently linked to ANCC via an aqueous-based bioconjugation reaction, confirmed by 13C nuclear magnetic resonance and Fourier transform infrared spectroscopies. The antibacterial effect the RB–ANCC conjugate evaluated against two major foodborne pathogens, namely Listeria monocytogenes Salmonella enterica serotype Typhimurium. inactivated over 80% both pathogens upon normal light irradiation. remarkable photoinactivation S. Typhimurium achieved using RB–ANCC, whereas free RB had no effect. We selected materials (i.e., cellulose-based film web electrospun nanofibers) incorporate further evaluating antimicrobial activity identified that due combination photodynamically generated reactive oxygen species electrostatically induced cell wall disruption cationic ANCC. processed green chemistry is regarded promising photobactericidal can be potentially used