Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/22446

TitleSuperhydrophobic poly(L-lactic acid) surface as potential bacterial colonization substrate
Author(s)Sousa, Cláudia
Rodrigues, Diana Alexandra Ferreira
Oliveira, Rosário
Wenlong Song
Mano, J. F.
Azeredo, Joana
KeywordsPoly(L-lactic acid)
Superhydrophobicity
Biomimetic surfaces
Bacterial colonization substrate
Issue date2011
PublisherSpringer
JournalAmb Express
Abstract(s)Hydrophobicity is a very important surface property and there is a growing interest in the production and characterization of superhydrophobic surfaces. Accordingly, it was recently shown how to obtain a superhydrophobic surface using a simple and cost-effective method on a polymer named poly(L-lactic acid) (PLLA). To evaluate the ability of such material as a substrate for bacterial colonization, this work assessed the capability of different bacteria to colonize a biomimetic rough superhydrophobic (SH) PLLA surface and also a smooth hydrophobic (H) one. The interaction between these surfaces and bacteria with different morphologies and cell walls was studied using one strain of Staphylococcus aureus and one of Pseudomonas aeruginosa. Results showed that both bacterial strains colonized the surfaces tested, although significantly higher numbers of S. aureus cells were found on SH surfaces comparing to H ones. Moreover, scanning electron microscopy images showed an extracellular matrix produced by P. aeruginosa on SH PLLA surfaces, indicating that this bacterium is able to form a biofilm on such substratum. Bacterial removal through lotus leaf effect was also tested, being more efficient on H coupons than on SH PLLA ones. Overall, the results showed that SH PLLA surfaces can be used as a substrate for bacterial colonization and, thus, have an exceptional potential for biotechnology applications.
TypeArticle
URIhttp://hdl.handle.net/1822/22446
DOI10.1186/2191-0855-1-34
ISSN2191-0855
Publisher versionhttp://www.amb-express.com/
Peer-Reviewedyes
AccessOpen access
Appears in Collections:CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series

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