Adhesion of the marine fouling diatomamphora coffeaeformisto non‐solid gel surfaces

Autor:	Kjetil Rasmussen, Kjetill Østgaard
Rok vydání:	2001
Předmět:	chemistry.chemical_classification Materials science Fouling Polymer Adhesion Aquatic Science Applied Microbiology and Biotechnology Biofouling Chitosan Shear (sheet metal) chemistry.chemical_compound chemistry Chemical engineering Botany Agarose Surface charge Water Science and Technology
Zdroj:	Biofouling. 17:103-115
ISSN:	1029-2454 0892-7014
DOI:	10.1080/08927010109378470
Popis:	Diatom adhesion to different gel surfaces was tested under different shear conditions, using the fouling marine diatom Amphora coffeaeformis as test organism. Four polymers were selected to obtain a test matrix containing gels with different surface charge as well as different surface energies, viz. agarose, alginate, chitosan and chemically modified polyvinylalcohol (PVA‐SbQ). Three experimental systems were applied to obtain different shear rates. Experimental system 1 consisted of gels cast in a cell culturing well plate for comparing initial adhesion as well as long term biofilm development in the absence of shear. In experimental system 2, microscope slide based test surfaces were tested in aquaria under low shear conditions. A rotating annular biofilm reactor was used to obtain high and controlled shear rates. At high shear rates A. coffeaeformis cells adhered better to the charged polymer gels (alginate and chitosan) than to the low charged polymer gels (agarose and PVA‐SbQ). In the system where sh...
Databáze:	OpenAIRE
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