Zosteric acid : An effective antifoulant for reducing fresh water bacterial attachment on coatings

Zosteric acid, a natural product present in eelgrass, has been found to prevent the attachment of some bacteria and barnacles. The results indicate that it may also be effective at reducing the early stages of biofouling, such as the attachment of bacteria that lead to a biofilm. In this study, the...

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Bibliographic Details
Published in:JCT research 2006, Vol.3 (1), p.69-76
Main Authors: ZHANG NEWBY, Bi-Min, CUTRIGHT, Teresa, BARRIOS, Carlos A, QINGWEI XU
Format: Article
Language:English
Subjects:
Applied sciences
Bacteria
Biodeterioration. Biofouling
Biological and medical sciences
Biotechnology
Case studies
Coatings industry
Compounding ingredients
Exact sciences and technology
Forms of application and semi-finished materials
Fundamental and applied biological sciences. Psychology
Industrial applications and implications. Economical aspects
Miscellaneous
Natural products
Paint, Antifouling
Polymer industry, paints, wood
Pseudomonas putida
Sheets and films
Technology of polymers
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Summary:Zosteric acid, a natural product present in eelgrass, has been found to prevent the attachment of some bacteria and barnacles. The results indicate that it may also be effective at reducing the early stages of biofouling, such as the attachment of bacteria that lead to a biofilm. In this study, the ability of zosteric acid in reducing the early stages of fouling was evaluated using attachment studies o f fresh water bacteria via two approaches. First, plain coatings were submersed in water containing zosteric acid and either enriched Lake Erie bacteria or Pseudomonas putida, a model fresh water bacteria. It was found that zosteric acid with a concentration one-tenth of its EC50 (the concentration eliminates 50% of the bacteria) was able to reduce bacterial attachment by more than 90%. The second approach incorporated zosteric acid into silicone coatings in the presence of a common solvent to achieve the slow release of zosteric acid; such coatings were then subjected to the bacterial attachment. A -75% reduction in bacterial attachment was found for 1 wt% zosteric acid entrapped Sylgard 184, a model silicone coating, but the reduction only achieved --55% for 1 wt% zosteric acid entrapped in a commercial silicone coating, RTV11.
ISSN:1547-0091
2168-8028
1935-3804
DOI:10.1007/s11998-006-0007-4