Assessment of the Antibiofilm Performance of Chitosan-Based Surfaces in Marine Environments

Marine biofouling is a natural process often associated with biofilm formation on submerged surfaces, creating a massive economic and ecological burden. Although several antifouling paints have been used to prevent biofouling, growing ecological concerns emphasize the need to develop new and environ...

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Vydáno v:International journal of molecular sciences Ročník 23; číslo 23; s. 14647
Hlavní autoři: Lima, Marta, Gomes, Luciana C., Teixeira-Santos, Rita, Romeu, Maria J., Valcarcel, Jesus, Vázquez, José Antonio, Cerqueira, Miguel A., Pastrana, Lorenzo, Bourbon, Ana I., de Jong, Ed D., Sjollema, Jelmer, Mergulhão, Filipe J.
Médium: Journal Article
Jazyk:angličtina
Vydáno: Switzerland MDPI AG 01.12.2022
MDPI
Témata:
Anti-Infective Agents
Antimicrobial agents
Biofilms
Biofouling - prevention & control
By products
Chitosan - pharmacology
Coatings
Contact angle
Environmental impact
Paint
Protective coatings
Netherlands
United States
Portugal
Germany
chitosan
marine biofouling
marine waste
biofilm formation
antifouling coatings
ISSN:1422-0067, 1661-6596, 1422-0067
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Shrnutí:Marine biofouling is a natural process often associated with biofilm formation on submerged surfaces, creating a massive economic and ecological burden. Although several antifouling paints have been used to prevent biofouling, growing ecological concerns emphasize the need to develop new and environmentally friendly antifouling approaches such as bio-based coatings. Chitosan (CS) is a natural polymer that has been widely used due to its outstanding biological properties, including non-toxicity and antimicrobial activity. This work aims to produce and characterize poly (lactic acid) (PLA)-CS surfaces with CS of different molecular weight (Mw) at different concentrations for application in marine paints. Loligo opalescens pens, a waste from the fishery industry, were used as a CS source. The antimicrobial activity of the CS and CS-functionalized surfaces was assessed against Cobetia marina, a model proteobacterium for marine biofouling. Results demonstrate that CS targets the bacterial cell membrane, and PLA-CS surfaces were able to reduce the number of culturable cells up to 68% compared to control, with this activity dependent on CS Mw. The antifouling performance was corroborated by Optical Coherence Tomography since PLA-CS surfaces reduced the biofilm thickness by up to 36%, as well as the percentage and size of biofilm empty spaces. Overall, CS coatings showed to be a promising approach to reducing biofouling in marine environments mimicked in this work, contributing to the valorization of fishing waste and encouraging further research on this topic.
Bibliografie:ObjectType-Article-1
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ISSN:1422-0067
1661-6596
1422-0067
DOI:10.3390/ijms232314647