| Title: | Antimicrobial activity of amino-modified cellulose nanofibrils decorated with silver nanoparticles |
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| Authors: | ID Lazić, Vesna (Author)
ID Nedeljković, Jovan (Author)
ID Kokol, Vanja (Author) |
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| Files: |  jfb-15-00304.pdf (3,84 MB)
MD5: E9B843626315514CF845261AE9BD83B9
 https://www.mdpi.com/2079-4983/15/10/304
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| Language: | English |
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| Work type: | Article |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: | FS - Faculty of Mechanical Engineering
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| Abstract: | Silver nanoparticles (Ag NPs) conjugated with amino-functionalized cellulose nanofibrils (NH2−CNFs) were in situ-prepared by reducing silver ions with free amino groups from NH2−CNFs. The spectroscopy and transmission electron microscopy measurements confirmed the presence of non-agglomerated nanometer-in-size Ag NPs within micrometer-large NH2−CNFs of high (20 wt.-%) content. Although the consumption of amino groups during the formation of Ag NPs lowers the ζ-potential and surface charge of prepared inorganic–organic hybrids (from +31.3 to +19.9 mV and from 2.4 to 1.0 mmol/g at pH 7, respectively), their values are sufficiently positive to ensure electrostatic interaction with negatively charged cell walls of pathogens in acidic and slightly (up to pH ~8.5) alkaline solutions. The antimicrobial activity of hybrid microparticles against various pathogens (Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus, and Candida albicans) is comparable with pristine NH2−CNFs. However, a long-timescale use of hybrids ensures the slow and controlled release of Ag+ ions to surrounding media (less than 1.0 wt.-% for one month). |
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| Keywords: | amino-modified cellulose nanofibrils, silver nanoparticles, hybrid microparticles, zeta-potential, antimicrobial activity |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Submitted for review: | 18.09.2024 |
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| Article acceptance date: | 11.10.2024 |
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| Publication date: | 13.10.2024 |
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| Publisher: | MDPI |
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| Year of publishing: | 2024 |
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| Number of pages: | 14 str. |
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| Numbering: | Vol. 14, iss. 10, [article no.] 304 |
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| PID: | 20.500.12556/DKUM-91123  |
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| UDC: | 543.2/.9:620.3 |
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| ISSN on article: | 2079-4983 |
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| COBISS.SI-ID: | 214017539 |
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| DOI: | 10.3390/jfb15100304 |
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| Copyright: | © 2024 by the authors |
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| Publication date in DKUM: | 09.12.2024 |
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| Views: | 187 |
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| Downloads: | 15 |
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| Metadata: |    |
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| Categories: | Misc.
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