Incorporating zosteric acid into silicone coatings to achieve its slow release while reducing fresh water bacterial attachment

Barrios, Carlos Angulo; Xu, Qingwei; Cutright, Teresa J.; Newby, Bi‐min Zhang

doi:10.1016/j.colsurfb.2004.09.009

Cited by 49 publications

(37 citation statements)

References 7 publications

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“…ZA is an attractive alternative as a new antifouling compound (e.g. Barrios et al 2005;Xu et al 2005a, b;Newby et al 2006). It is also effective in protecting crops from fungal diseases (Alberte and Zimmerman 2000;Stanley et al 2002).…”

Section: Introductionmentioning

confidence: 97%

Evaluation of Zostera detritus as a potential new source of zosteric acid

2008

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Detritus of the seagrasses Zostera noltii and Z. marina collected on the beaches of Arcachon Lagoon (France) over a 3-year period was screened as a new source of zosteric acid (ZA). This natural sulphated phenolic acid is a high value-added product capable of preventing settlement of marine organisms and protecting crops from fungal diseases. The seasonal variation of the ZA content was quantified in methanolic and aqueous crude extracts using high-performance liquid chromatography. The concentration found ranged from 65 to 456 μg g −1 dry wt for Z. noltii and 51-692 μg g −1 dry wt for Z. marina, respectively. This is the first report of ZA in Zostera noltii. Detrital leaves of Zostera have never before been screened for their bioactive substances. These results show that this low cost, very abundant and renewable, but heretofore unused, marine resource has potential as a source of a rare and naturally occurring bioactive product.

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Section: Introductionmentioning

confidence: 97%

Evaluation of Zostera detritus as a potential new source of zosteric acid

2008

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“…Currently, its biofilm inhibiting activity is tested by different research groups. The antifouling effectiveness of zosteric acid has been demonstrated both in static laboratory assays and with zosteric acid directly dispersed in marine water [97]. With respect to the mode of action, it was shown that zosteric acid hinders the biofilm formation by increasing the bacterial motility by 40%.…”

Section: Economical Use Of Seagrasses and Their Productsmentioning

confidence: 97%

Highlights in Seagrasses’ Phylogeny, Physiology, and Metabolism: What Makes Them Special?

Papenbrock

2012

ISRN Botany

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The marine seagrasses form an ecological and therefore paraphyletic group of marine hydrophilus angiosperms which evolved three to four times from land plants towards an aquatic and marine existence. Their taxonomy is not yet solved on the species level and below due to their reduced morphology. So far also molecular data did not completely solve the phylogenetic relationships. Thus, this group challenges a new definition for what a species is. Also their physiology is not well understood due to difficult experimental in situ and in vitro conditions. There remain several open questions concerning how seagrasses adapted secondarily to the marine environment. Here probably exciting adaptation solutions will be detected. Physiological adaptations seem to be more important than morphological ones. Seagrasses contain several compounds in their secondary metabolism in which they differ from terrestrial plants and also not known from other taxonomic groups. Some of these compounds might be of interest for commercial purposes. Therefore their metabolite contents constitute another treasure of the ocean. This paper gives an introduction into some of the most interesting aspects from phylogenetical, physiological, and metabolic points of view.

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“…The details on choosing the solvent and leaching of zosteric acid from the resulting coatings have been reported elsewhere. 33 Briefly we were able to reduce the leaching rate to the range of 0.01 to 0.1 μg/day-cm 2 , thus increasing the possible service life of the coating to more than 10 years for coatings containing only 1 wt% of zosteric acid. On the other hand, in order to provide sufficient leaching of zosteric acid to deter the attachment of bacteria, a leaching rate in the range of ~0.1 μg/day-cm 2 appeared to be optimum.…”

Section: Antibacterial Capability Of Zosteric Acid-entrapped Siliconementioning

confidence: 99%

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

Newby

Cutright

Barrios

et al. 2006

J Coat. Technol. Res.

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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 of 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 EC 50 (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.

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Incorporating zosteric acid into silicone coatings to achieve its slow release while reducing fresh water bacterial attachment

Cited by 49 publications

References 7 publications

Evaluation of Zostera detritus as a potential new source of zosteric acid

Evaluation of Zostera detritus as a potential new source of zosteric acid

Highlights in Seagrasses’ Phylogeny, Physiology, and Metabolism: What Makes Them Special?

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

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