{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,7]],"date-time":"2026-09-07T18:09:49Z","timestamp":1788804589418,"version":"build-2803163510"},"reference-count":46,"publisher":"MDPI AG","issue":"12","license":[{"start":{"date-parts":[[2021,6,16]],"date-time":"2021-06-16T00:00:00Z","timestamp":1623801600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100006345","name":"Uniwersytet Mikolaja Kopernika w Toruniu","doi-asserted-by":"publisher","award":["282\/2021 IDUB SD"],"award-info":[{"award-number":["282\/2021 IDUB SD"]}],"id":[{"id":"10.13039\/501100006345","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJMS"],"abstract":"<jats:p>This paper concerns the physicochemical properties of chitosan\/phenolic acid thin films irradiated by ultraviolet radiation with wavelengths between 200 and 290 nm (UVC) light. We investigated the preparation and characterization of thin films based on chitosan (CTS) with tannic (TA), caffeic (CA) and ferulic acid (FA) addition as potential food-packaging materials. Such materials were then exposed to the UVC light (254 nm) for 1 and 2 h to perform the sterilization process. Different properties of thin films before and after irradiation were determined by various methods such as Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), atomic force microscopy (AFM), differential scanning calorimeter (DSC), mechanical properties and by the surface free energy determination. Moreover, the antimicrobial activity of the films and their potential to reduce the risk of contamination was assessed. The results showed that the phenolic acid improving properties of chitosan-based films, short UVC radiation may be used as sterilization method for those films, and also that the addition of ferulic acid obtains effective antimicrobial activity, which have great benefit for food packing applications.<\/jats:p>","DOI":"10.3390\/ijms22126472","type":"journal-article","created":{"date-parts":[[2021,6,16]],"date-time":"2021-06-16T21:58:32Z","timestamp":1623880712000},"page":"6472","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":35,"title":["The Physicochemical and Antibacterial Properties of Chitosan-Based Materials Modified with Phenolic Acids Irradiated by UVC Light"],"prefix":"10.3390","volume":"22","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2563-2376","authenticated-orcid":false,"given":"Beata","family":"Kaczmarek-Szczepa\u0144ska","sequence":"first","affiliation":[{"name":"Department of Biomaterials and Cosmetics Chemistry, Faculty of Chemistry, Nicolaus Copernicus University in Torun, 87-100 Toru\u0144, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6889-7825","authenticated-orcid":false,"given":"Marcin","family":"Wekwejt","sequence":"additional","affiliation":[{"name":"Department of Biomaterials Technology, Faculty of Mechanical Engineering and Ship Technology, Gda\u0144sk University of Technology, 80-008 Gda\u0144sk, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Olha","family":"Mazur","sequence":"additional","affiliation":[{"name":"Department of Biomaterials and Cosmetics Chemistry, Faculty of Chemistry, Nicolaus Copernicus University in Torun, 87-100 Toru\u0144, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lidia","family":"Zasada","sequence":"additional","affiliation":[{"name":"Department of Biomaterials and Cosmetics Chemistry, Faculty of Chemistry, Nicolaus Copernicus University in Torun, 87-100 Toru\u0144, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7573-4488","authenticated-orcid":false,"given":"Anna","family":"Pa\u0142ubicka","sequence":"additional","affiliation":[{"name":"Department of Laboratory Diagnostics and Microbiology with Blood Bank, Specialist Hospital in Ko\u015bcierzyna, 83-400 Ko\u015bcierzyna, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8407-0078","authenticated-orcid":false,"given":"Ewa","family":"Olewnik-Kruszkowska","sequence":"additional","affiliation":[{"name":"Physical Chemistry and Physicochemistry of Polymers, Faculty of Chemistry, Nicolaus Copernicus University in Torun, 87-100 Toru\u0144, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2021,6,16]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"268","DOI":"10.1016\/j.jhin.2013.08.003","article-title":"Cleaning, disinfection and sterilization of surface prion contamination","volume":"85","author":"McDonnell","year":"2013","journal-title":"J. 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