Antimicrobial efficacy of solar disinfection in cellulose fiber supported photoactive materials
Autor/a
Altres autors/es
Data de publicació
2023-12-29ISSN
2352-4928
Resum
According to the World Health Organization, antimicrobial resistance is one of the emerging threats to global health. Therefore, the development of new strategies to mitigate resistant bacterial strains is highly desirable. Photodynamic inactivation is a promising approach owing to its effectiveness against a broad range of microorganisms irrespective of their antibiotic resistance profile and its multitarget mechanism that hamper the appearance of acquired resistance. In this work, a self-sterilizing and potentially biodegradable material is developed, providing a green alternative for single-use packaging in the medical, food, and cosmetic industry. We demonstrate two synthetic approaches based on covalent linkage of toluidine blue to tempo-oxidized carbon nanofibers, as well as the supramolecular immobilization based on electrostatic self-assembly. The former shows high activity, reaching inactivation rates of 8 Log10 CFU for S. aureus and E. coli after 15 min under 250 W·m−2 artificial sun irradiation. This simple and facile approach will enable the preparation of composite photoantimicrobial films that are light activated, providing clean and microbiologically safe surfaces, even in challenging situations, such as natural disasters or conflicts, or remote locations with of none or limited access to other forms of energy supply.
Tipus de document
Article
Versió del document
Versió publicada
Llengua
Anglès
Matèries (CDU)
615 - Farmacologia. Terapèutica. Toxicologia. Radiologia
Paraules clau
Cellulose nanofibers
Photodynamic inactivation
Toluidine blue
Singlet oxygen
Solar disinfection
Pàgines
8 p.
Publicat per
Elsevier
Publicat a
Materials Today Communications. 2024;38:107858
Número de l'acord de la subvenció
info:eu-repo/grantAgreement/AEI i FEDER/PN I+D/PID2020-115801RB-C22
info:eu-repo/grantAgreement/AEI i FEDER/PN I+D/RYC2021-032773-I
info:eu-repo/grantAgreement/SUR del DEC/SGR/2021 SGR 01023
info:eu-repo/grantAgreement/SUR del DEC/BP/2020BP00066
info:eu-repo/grantAgreement/ICREA/Acadèmia/Grant No. Ac2232308
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