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Protein-repellent and antioxidative properties of bioactive coatings based on TEMPO oxidized cellulose nanofibrils and chitosan
Protein-odbijajuća i antioksidativna svojstva bioaktivnih prevlaka na bazi TEMPO oksidisanih celuloznih nanofibrila i hitozana
dc.creator | Korica, Matea | |
dc.creator | Fras Zemljič, Lidija | |
dc.creator | Bračić, Matej | |
dc.creator | Kargl, Rupert | |
dc.creator | Kostić, Mirjana | |
dc.date.accessioned | 2023-11-15T12:36:39Z | |
dc.date.available | 2023-11-15T12:36:39Z | |
dc.date.issued | 2018 | |
dc.identifier.isbn | 978-86-7132-070-2 | |
dc.identifier.uri | http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6831 | |
dc.description.abstract | In this work, regenerated cellulose (RC) films was coated with TEMPO oxidized cellulose nanofibrils (TOCN) and chitosan (CS) by means of subsequent spin-coated deposition. The bioactivity of coatings was achieved by addition of chitosan. The chitosan was either mixed with the TOCN (TOCN+CS) and deposited on the RC film by spin-coating or deposited on the RC/TOCN bilayer film by pumping its aqueous solution at pH 5.5 over the surface of the film. The pH dependant charging behaviour of the TOCN, TOCN+CS, and CS were evaluated by pH-potentiometric titrations. The protein-repellent properties of investigated coatings were evaluated in situ using a continuous flow of bovine serum albumin (BSA) by means of quartz crystal microbalance with dissipation (QCM-D). Antioxidative activity of TOCN, CS and their amphoteric mixture was determined using the 2,2′-azino-bis(3-ethyl benzothiazoline-6-sulfonic acid) radical scavenging assay. Coating with improved protein repellent properties was obtained using TOCN+CS amphoteric mixture, but on the other hand TOCN+CS amphoteric mixture showed weaker antioxidative properties in comparison to TOCN and CS. | |
dc.description.abstract | U ovom radu, filmovi od regenerisane celuloze (RC) su naslojeni sa TEMPO oksidisanim celuloznim nanofibrilima (TOCN) i hitozanom (CS) metodom rotirajućeg diska. Bioaktivnost prevlaka postignuta je dodavanjem hitozana. Hitozan je ili pomešan sa TOCN (TOCN+CS) i naslojen na RC film tehnikom rotirajućeg diska ili nanesen na RC/TOCN dvoslojni film propumpavanjem njegovog vodenog rastvora, pH vrednosti 5,5, preko površine filma. Naelektrisanje TOCN, TOCN+CS i CS u zavisnosti od pH je okarakterisano pH-potenciometrijskim titracijama. Protein-odbijajuća svojstva ispitivanih prevlaka određena su in situ, u kontinualnom toku goveđeg serumskog albumina (BSA) primenom kvarc-kristal mikrovage sa praćenjem disipacije (QCM-D). Antioksidativna svojstva TOCN, CS i TOCN+CS amfoterne mešavine su određena metodom inhibicije radikala 2,2′-azino-bis(3-etil benzotiazolin-6-sulfonske kiseline). Prevlaka sa poboljšanim protein-odbijajućim svojstvima je dobijena upotrebom TOCN+CS amfoterne mešavine, ali sa druge strane TOCN+CS amfoterna mešavina je pokazala slabija antioksidativna svojstva u poređenju sa TOCN i CS. | |
dc.language.iso | en | sr |
dc.publisher | Beograd : Serbian Chemical Society | sr |
dc.relation | info:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/172029/RS// | sr |
dc.rights | openAccess | sr |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | |
dc.source | Proceedings / 55th Meeting of the Serbian Chemical Society, Novi Sad, Serbia, June 8-9, 2018 | sr |
dc.title | Protein-repellent and antioxidative properties of bioactive coatings based on TEMPO oxidized cellulose nanofibrils and chitosan | sr |
dc.title | Protein-odbijajuća i antioksidativna svojstva bioaktivnih prevlaka na bazi TEMPO oksidisanih celuloznih nanofibrila i hitozana | |
dc.type | conferenceObject | sr |
dc.rights.license | BY | sr |
dc.citation.epage | 76 | |
dc.citation.spage | 66 | |
dc.identifier.fulltext | http://TechnoRep.tmf.bg.ac.rs/bitstream/id/18579/bitstream_18579.pdf | |
dc.identifier.rcub | https://hdl.handle.net/21.15107/rcub_technorep_6831 | |
dc.type.version | publishedVersion | sr |