当前位置： SCI文献检索 > JOURNAL OF INDUSTRIAL MICROBIOLOGY & BIOTECHNOLOGY期刊下所有文献 > Bacterial assay for the rapid assessment of antifouling and fouling release properties of coatings and materials.

Bacterial assay for the rapid assessment of antifouling and fouling release properties of coatings and materials.

Abstract：

:An assay has been developed to accurately quantify the growth and release behaviour of bacterial biofilms on several test reference materials and coatings, using the marine bacterium Cobetia marina as a model organism. The assay can be used to investigate the inhibition of bacterial growth and release properties of many surfaces when compared to a reference. The method is based upon the staining of attached bacterial cells with the nucleic acid-binding, green fluorescent SYTO 13 stain. A strong linear correlation exists between the fluorescence of the bacterial suspension measured (RFU) using a plate reader and the total bacterial count measured with epifluorescence microscopy. This relationship allows the fluorescent technique to be used for the quantification of bacterial cells attached to surfaces. As the bacteria proliferate on the surface over a period of time, the relative fluorescence unit (RFU) measured using the plate reader also shows an increase with time. This was observed on all three test surfaces (glass, Epikote and Silastic T2) over a period of 4 h of bacterial growth, followed by a release assay, which was carried out by the application of hydrodynamic shear forces using a custom-made rotary device. Different fixed rotor speeds were tested, and based on the release analysis, 12 knots was used to provide standard shear force. The assay developed was then applied for assessing three different antifouling coatings of different surface roughness. The novel assay allows the rapid and sensitive enumeration of attached bacteria directly on the coated surface. This is the first plate reader assay technique that allows estimation of irreversibly attached bacterial cells directly on the coated surface without their removal from the surface or extraction of a stain into solution.

journal_name

J Ind Microbiol Biotechnol

journal_title

Journal of industrial microbiology & biotechnology

authors

D'Souza F,Bruin A,Biersteker R,Donnelly G,Klijnstra J,Rentrop C,Willemsen P

doi

10.1007/s10295-009-0681-1

subject

Has Abstract

pub_date

2010-04-01 00:00:00

pages

363-70

issue

4

eissn

1367-5435

issn

1476-5535

journal_volume

37

pub_type

杂志文章

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