Synthesis of monodisperse chitosan nanoparticles

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dc.contributor.authorSullivan, David Joseph
dc.contributor.authorCruz-Romero, Malco C.
dc.contributor.authorCollins, Timothy W.
dc.contributor.authorCummins, Enda
dc.contributor.authorKerry, Joseph P.
dc.contributor.authorMorris, Michael A.
dc.contributor.funderDepartment of Agriculture, Food and the Marineen
dc.date.accessioned2018-05-16T11:51:16Z
dc.date.available2018-05-16T11:51:16Z
dc.date.issued2018-05-08
dc.date.updated2018-05-16T10:20:53Z
dc.description.abstractThe objectives of this study were to evaluate the effects of the initial concentrations of chitosan (CS) and sodium tripolyphosphate (TPP), the CS:TPP mass ratio, the CS molecular weight (MW) and pH on the synthesis of CS nanoparticles (CS NPs). The particle size of the synthesised CS NPs was significantly affected (P < 0.05) by these parameters. Self-assembled monodisperse CS NPs with a particle size of 90 nm and zeta potential of 30.15 m were successfully synthesised using solutions of 0.1% low MW CS at pH 4.6 and 3:1 (CS:TPP) mass ratio. When higher concentrations of CS were used, application of external forces (tip sonication or Ultra-Turrax™) was necessary to induce monodispersity and significantly (P < 0.05) reduce the particle size; however, the particle sizes were >300 nm. While both native CS and CS NPs showed antimicrobial activity, no significant antimicrobial enhancement was observed for the NP form. The findings of this study have shown that monodisperse CS NPs can be obtained using a combination of bottom-up and top-down techniques and the unique physiochemical properties of these nanomaterials have the potential for applications in developing of antimicrobial active packaging materials.en
dc.description.sponsorshipDepartment of Agriculture, Food and the Marine (Food Institutional Research Measure (FIRM))en
dc.description.statusPeer revieweden
dc.description.versionAccepted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationSullivan, D. J., Cruz-Romero, M., Collins, T., Cummins, E., Kerry, J. P. and Morris, M. A. (2018) 'Synthesis of monodisperse chitosan nanoparticles', Food Hydrocolloids, 83, pp. 355-364. doi: 10.1016/j.foodhyd.2018.05.010en
dc.identifier.doi10.1016/j.foodhyd.2018.05.010
dc.identifier.endpage364
dc.identifier.issn0268-005X
dc.identifier.issn1873-7137
dc.identifier.journaltitleFood Hydrocolloidsen
dc.identifier.startpage355
dc.identifier.urihttps://hdl.handle.net/10468/6126
dc.identifier.volume83
dc.language.isoenen
dc.publisherElsevier Ltd.en
dc.rights© 2018, Elsevier Ltd. All rights reserved. This manuscript version is made available under the CC-BY-NC-ND 4.0 license.en
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/en
dc.subjectSynthesis of chitosan nanoparticlesen
dc.subjectBottom-up and top-downen
dc.subjectMonodispersityen
dc.subjectAntimicrobial activityen
dc.titleSynthesis of monodisperse chitosan nanoparticlesen
dc.typeArticle (peer-reviewed)en
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