Antimicrobial Effects of Carbon Nanotubes

Dong, Xiuli; Tang, Yongan; Lilly, Marquita; Aferchich, Kamal; Yang, Liju

doi:10.1142/s1793984412300129

Cited by 10 publications

(2 citation statements)

References 84 publications

(123 reference statements)

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“…9 ), offering inhibition zone diameters in the range of 5.0–6.1 mm. However, their biohybrids with carbon nanotubes exhibited enhanced biocidal features due to the presence of SWCNTs, which are known to possess antimicrobial properties [ 47 – 48 ]. Kang et al [ 49 ] pointed out that cell membrane damage resulting from direct contact with carbon nanotubes is the most plausible mechanism leading to bacterial cell death.…”

Section: Resultsmentioning

confidence: 99%

Nanobioarchitectures based on chlorophyll photopigment, artificial lipid bilayers and carbon nanotubes

Barbinta-Patrascu¹,

Iordache²,

Iordache³

et al. 2014

Beilstein J. Nanotechnol.

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SummaryIn the last decade, building biohybrid materials has gained considerable interest in the field of nanotechnology. This paper describes an original design for bionanoarchitectures with interesting properties and potential bioapplications. Multilamellar lipid vesicles (obtained by hydration of a dipalmitoyl phosphatidylcholine thin film) with and without cholesterol were labelled with a natural photopigment (chlorophyll a), which functioned as a sensor to detect modifications in the artificial lipid bilayers. These biomimetic membranes were used to build non-covalent structures with single-walled carbon nanotubes. Different biophysical methods were employed to characterize these biohybrids such as: UV–vis absorption and emission spectroscopy, zeta potential measurements, AFM and chemiluminescence techniques. The designed, carbon-based biohybrids exhibited good physical stability, good antioxidant and antimicrobial properties, and could be used as biocoating materials. As compared to the cholesterol-free samples, the cholesterol-containing hybrid structures demonstrated better stability (i.e., their zeta potential reached the value of −36.4 mV), more pronounced oxygen radical scavenging ability (affording an antioxidant activity of 73.25%) and enhanced biocidal ability, offering inhibition zones of 12.4, 11.3 and 10.2 mm in diameter, against Escherichia coli, Staphylococcus aureus and Enterococcus faecalis, respectively.

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Section: Resultsmentioning

confidence: 99%

Nanobioarchitectures based on chlorophyll photopigment, artificial lipid bilayers and carbon nanotubes

Barbinta-Patrascu¹,

Iordache²,

Iordache³

et al. 2014

Beilstein J. Nanotechnol.

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“…A wide range of NMs exhibit antimicrobial activities (Stoimenov, Klinger et al 2002, Lyon, Adams et al 2006, Marambio-Jones and Hoek 2010, Dong, Tang et al 2012). The small size and high surface area to volume ratio are the unique properties which allow them to closely interact with the microbial cell and the sub-cellular structures (Morones, Elechiguerra et al 2005, Ng, Sivakumar et al 2013).…”

Section: Mechanisms Of Toxicity Of Nms To Microorganismsmentioning

confidence: 99%

Impacts of nanomaterials on social behaviour of microorganisms

Mohanty¹

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The toxicity of NMs in terms of bactericidal or bacteriostatic effect has mostly been concentration dependent (Rai, Yadav et al. 2009, Liu, Zeng et al. 2011. However, the discharge concentrations of NMs in the environments is expected to be much lower than those used in majority of nanotoxicity studies and environmentally relevant concentration is expected to be mostly sublethal (see Section 2.2). How NMs at sublethal concentrations affect environmental bacteria in terms of functions is largely unexplored, which has been This study aims at exploring the sublethal impacts of NMs on the social behaviour of environmental bacteria. The specific tasks include:(i) Investigate the impacts of NMs on the production of communal resources, i.e., microbial product that is beneficial to the community, by environmental bacteria.Specifically, the impacts of NMs, i.e., Tellurium nanorods (TeNRs) and single-wall carbon nanotubes (SWCNTs), on the production of siderophore by Pseudomonas aeruginosa will be explored.

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