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Pickering oil-in-water emulsions stabilized by carboxylated cellulose nanocrystals – Effect of the pH

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dc.title Pickering oil-in-water emulsions stabilized by carboxylated cellulose nanocrystals – Effect of the pH en
dc.contributor.author Mikulcová, Veronika
dc.contributor.author Bordes, Romain
dc.contributor.author Minařík, Antonín
dc.contributor.author Kašpárková, Věra
dc.relation.ispartof Food Hydrocolloids
dc.identifier.issn 0268-005X Scopus Sources, Sherpa/RoMEO, JCR
dc.date.issued 2018
utb.relation.volume 80
dc.citation.spage 60
dc.citation.epage 67
dc.type article
dc.language.iso en
dc.publisher Elsevier
dc.identifier.doi 10.1016/j.foodhyd.2018.01.034
dc.relation.uri https://www.sciencedirect.com/science/article/pii/S0268005X17319252
dc.subject Carboxylated cellulose nanocrystals en
dc.subject pH responsiveness en
dc.subject Pickering emulsions en
dc.subject Stability en
dc.subject Triglyceride oil en
dc.description.abstract Carboxylated cellulose nanocrystals (cCNC) were prepared by oxidation of microcrystalline cellulose with ammonium persulfate and characterized by AFM. Zeta potential was measured at different pH and ionic strength, in presence of mono- and divalent cations. With a length ranging from 50 to 450 nm and a thickness varying between 20 and 60 nm, the cCNC had a surface charge that appeared to be more sensitive to the presence of divalent cations and exhibited a strong pH dependence. The nanocrystals were capable of forming stable oil-in-water emulsions at three different pH of 2, 4 and 7 with a triglyceride oil. The size of emulsion droplets was dependent on oil and cCNC contents. Emulsification was, however, mainly influenced by the pH of the continuous phase, which can be related to reduction of charge on the cCNC surface with decreasing pH. Responsiveness of emulsions towards pH changes was not as dominant as expected, and lowering of pH did not trigger the release of oil from droplets. This can be explained by the strong adsorption of the cCNC, relatively polar triglyceride oil and the limited possibility to induce desorption of nanocrystals from oil surface. © 2018 Elsevier Ltd en
utb.faculty Faculty of Technology
utb.faculty University Institute
dc.identifier.uri http://hdl.handle.net/10563/1007813
utb.identifier.obdid 43878914
utb.identifier.scopus 2-s2.0-85044370149
utb.identifier.wok 000429959700008
utb.identifier.coden FOHYE
utb.source j-scopus
dc.date.accessioned 2018-04-23T15:01:46Z
dc.date.available 2018-04-23T15:01:46Z
dc.description.sponsorship 17-05095S, GACR, Grantová Agentura České Republiky; LO1504, MŠMT, Ministerstvo Školství, Mládeže a Tělovýchovy
dc.description.sponsorship Czech Science Foundation [17-05095S]; Ministry of Education, Youth and Sports of the Czech Republic [LO1504]; TBU in Zlin [IGA/CPS/2017/001]
utb.ou Centre of Polymer Systems
utb.contributor.internalauthor Mikulcová, Veronika
utb.contributor.internalauthor Minařík, Antonín
utb.contributor.internalauthor Kašpárková, Věra
utb.fulltext.affiliation Veronika Mikulcová a , Romain Bordes b, * , Antonín Minařík c, d , Věra kašpárková a, c, ** a Department of Fat, Surfactant and Cosmetics Technology, Faculty of Technology, Tomas Bata University in Zlín, nám. T. G. Masaryka 5555, 760 01 Zlín, Czech Republic b Chalmers University of Technology, Department of Chemical and Biological Engineering, SE-412 96 Göteborg, Sweden c Centre of Polymer Systems, Tomas Bata University in Zlin, nám. T. G. Masaryka 5555, 760 01 Zlin, Czech Republic d Department of Physics and Materials Engineering, Faculty of Technology, Tomas Bata University in Zlín, nám. T. G. Masaryka 5555, 760 01 Zlín, Czech Republic * Corresponding author. ** Corresponding author. Department of Fat, Surfactant and Cosmetics Technology, Faculty of Technology, Tomas Bata University in Zlín, nám. T. G. Masaryka 5555, 760 01 Zlín, Czech Republic. E-mail addresses: bordes@chalmers.se (R. Bordes), vkasparkova@ft.utb.cz (V. Kašpárková ).
utb.fulltext.dates Available online 6 February 2018
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utb.fulltext.sponsorship This work was supported by the Czech Science Foundation (17-05095S) and by the Ministry of Education, Youth and Sports of the Czech Republic (Program NPU I, LO1504). The support of internal grants of TBU in Zlín, IGA/CPS/2017/001 is also acknowledged. The authors thank Ms. Eliška Siudová for technical assistance.
utb.scopus.affiliation Department of Fat, Surfactant and Cosmetics Technology, Faculty of Technology, Tomas Bata University in Zlín, nám. T. G. Masaryka 5555, Zlín, Czech Republic; Chalmers University of Technology, Department of Chemical and Biological Engineering, Göteborg, Sweden; Centre of Polymer Systems, Tomas Bata University in Zlin, nám. T. G. Masaryka 5555, Zlin, Czech Republic; Department of Physics and Materials Engineering, Faculty of Technology, Tomas Bata University in Zlín, nám. T. G. Masaryka 5555, Zlín, Czech Republic
utb.fulltext.projects 17-05095S
utb.fulltext.projects LO1504
utb.fulltext.projects IGA/CPS/2017/001
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