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dc.creatorDavidović, Slađana Z.
dc.creatorLazić, Vesna M.
dc.creatorVukoje, Ivana D.
dc.creatorPapan, Jelena
dc.creatorAnhrenkiel, S. Phillip
dc.creatorDimitrijević, Suzana I.
dc.creatorNedeljković, Jovan
dc.date.accessioned2018-03-01T18:04:44Z
dc.date.available2018-03-01T18:04:44Z
dc.date.issued2017
dc.identifier.issn0927-7765 (print)
dc.identifier.issn1873-4367 (electronic)
dc.identifier.urihttp://vinar.vin.bg.ac.rs/handle/123456789/1887
dc.description.abstractA simple, fast and non-costly method for selective cysteine (Cys) detection, based on optical changes of silver colloids, is developed. For that purpose, stable colloids consisting of silver nanoparticles (Ag NPs) coated with polysaccharide dextran (Dex), isolated from bacterium species Leuconostoc mesenteroides T3, were prepared. The synthesized samples were thoroughly characterized including absorption and FTIR spectroscopy, as well as transmission electron microscopy and X-ray diffraction analysis. The silver colloids display high sensitivity and selectivity towards Cys detection in aqueous solutions. The Ag NPs coated with Dex provide possibility to detect Cys among a dozen amino acids and its detection limit was found to be 12.0 M. The sensing mechanism - red shift of optical absorption - is discussed in terms of the agglomeration of Ag NPs due to formation of hydrogen bonds between Cys molecules attached to different Ag NPs. (C) 2017 Elsevier B.V. All rights reserved.en
dc.relationinfo:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/45020/RS//
dc.relationinfo:eu-repo/grantAgreement/MESTD/Technological Development (TD or TR)/31035/RS//
dc.rightsrestrictedAccessen
dc.sourceColloids and Surfaces. B: Biointerfacesen
dc.subjectAg nanoparticlesen
dc.subjectDextranen
dc.subjectCysteine detectionen
dc.subjectSensoren
dc.subjectSensitivity and selectivityen
dc.titleDextran coated silver nanoparticles Chemical sensor for selective cysteine detectionen
dc.typearticleen
dcterms.abstractAнхренкиел, С. Пхиллип; Давидовиц, Сладана; Димитријевиц, Сузана; Лазић Весна; Вукоје Ивана; Папан Јелена; Недељковић Јован;
dc.citation.volume160
dc.citation.spage184
dc.citation.epage191
dc.identifier.wos000418978500022
dc.identifier.doi10.1016/j.colsurfb.2017.09.031
dc.identifier.pmid28934661
dc.identifier.scopus2-s2.0-85029533390


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