Imperial College London
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DrThomasMacdonald

Faculty of Natural Sciences, Department of Chemistry

Visiting Reseacher
 
 
 
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t.macdonald

 
 
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Location

 

Molecular Sciences Research HubWhite City Campus

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Summary

 

Publications

Citation

BibTex format

@article{Lourenco:2018:10.1039/c8ra04361b,
author = {Lourenco, C and Macdonald, TJ and Gavriilidis, A and Allan, E and MacRobert, AJ and Parkin, IP},
doi = {10.1039/c8ra04361b},
journal = {RSC Advances: an international journal to further the chemical sciences},
pages = {34252--34258},
title = {Effects of bovine serum albumin on light activated antimicrobial surfaces},
url = {http://dx.doi.org/10.1039/c8ra04361b},
volume = {8},
year = {2018}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Bovine serum albumin (BSA) is currently recommended as an interfering substance to emulate organic soiling, in evaluating the efficacy of disinfectants. The European Standard recommends 0.03% BSA to test clean conditions and 0.3% for dirty conditions. Reactive oxygen species are known to exert excellent antimicrobial activity with low specificity against a broad range of pathogens. Herein, we present our data from the first study of the effects of the addition of BSA on the antibacterial activity of light activated antimicrobial surfaces. Light activated antimicrobial surfaces were made from polyurethane swell-encapsulated with gold nanoparticles (AuNPs) coated with the light active triarylmethane dye, crystal violet (PU-AuNP-CV). The antibacterial efficacy of the antimicrobial substrates was tested against two strains of Staphylococcus aureus 8325-4, a well-characterised laboratory strain and MRSA 4742, a recent clinical isolate, in the presence of 0.1% to 1% BSA by irradiating the substrates with a fluorescent lamp (300 lux). After 6 hours of irradiation, the number of surviving bacteria was determined. The results showed that BSA reduced the antibacterial efficacy of all the PU-AuNP-CV surfaces with increasing BSA concentrations resulting in a progressive reduction in antibacterial activity towards the bacteria tested. However, the light activated surfaces did perform well at 0.1 and 0.25% BSA levels, showing they may have potential for real world environments with low levels of organic soiling.
AU  - Lourenco,C
AU  - Macdonald,TJ
AU  - Gavriilidis,A
AU  - Allan,E
AU  - MacRobert,AJ
AU  - Parkin,IP
DO  - 10.1039/c8ra04361b
EP  - 34258
PY  - 2018///
SN  - 2046-2069
SP  - 34252
TI  - Effects of bovine serum albumin on light activated antimicrobial surfaces
T2  - RSC Advances: an international journal to further the chemical sciences
UR  - http://dx.doi.org/10.1039/c8ra04361b
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000448423500008&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - https://pubs.rsc.org/en/content/articlelanding/2018/RA/C8RA04361B#!divAbstract
UR  - http://hdl.handle.net/10044/1/78587
VL  - 8
ER  -
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