Superhydrophobic poly(L-lactic acid) surface as potential bacterial colonization substrate

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-lact...

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Veröffentlicht in:AMB Express 2011-10, Vol.1 (1), p.34-34, Article 34
Hauptverfasser: Sousa, Cláudia, Rodrigues, Diana, Oliveira, Rosário, Song, Wenlong, Mano, João F, Azeredo, Joana
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container_title AMB Express
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creator Sousa, Cláudia
Rodrigues, Diana
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Song, Wenlong
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Azeredo, Joana
description 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.
doi_str_mv 10.1186/2191-0855-1-34
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subjects Biomedical and Life Sciences
Biotechnology
Life Sciences
Microbial Genetics and Genomics
Microbiology
Original
title Superhydrophobic poly(L-lactic acid) surface as potential bacterial colonization substrate
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