Marine algae offer a rich source of bioactive molecules with biotechnological potential, mainly in pharmaceutical applications. The increasing phenomenon of resistance to currently used antibiotics needs for the discovery of new antibiotics useful in human therapy, veterinary medicine and aquaculture. Since the compounds extracted from marine algae have already been reported to have antibacterial activities, in this study polysaccharides extracted from the brown algae Fucus viroides and Sargassum muticum, and the green alga Ulva fasciata were screened for their antibacterial activity against shellfish and fish bacterial pathogens, isolated from local marine environments. Polysaccharides obtained from F. viroides showed moderate activity against Aeromonas salmonicida subsp. salmonicida, Aeromonas hydrophila, Photobacterium damselae subsp. damselae, Vibrio parahaemolyticus and Salmonella sp. Weak activity was observed for extracts from S. muticum against V. parahaemolyticus. Extracts from U. fasciata possessed moderate activity against A. salmonicida and weak activity against A. hydrophila. These extracts could represent a new source of antibacterial compounds with potential use in aquaculture, as a possible alternative for the treatment of diseases of farmed fish.

Antibacterial activity of polysaccharides extracted from marine algae against fish pathogens

GUGLIANDOLO, Concetta;SPANO', ANTONIO;MORABITO, Marina;GENOVESE, Giuseppa
2014

Abstract

Marine algae offer a rich source of bioactive molecules with biotechnological potential, mainly in pharmaceutical applications. The increasing phenomenon of resistance to currently used antibiotics needs for the discovery of new antibiotics useful in human therapy, veterinary medicine and aquaculture. Since the compounds extracted from marine algae have already been reported to have antibacterial activities, in this study polysaccharides extracted from the brown algae Fucus viroides and Sargassum muticum, and the green alga Ulva fasciata were screened for their antibacterial activity against shellfish and fish bacterial pathogens, isolated from local marine environments. Polysaccharides obtained from F. viroides showed moderate activity against Aeromonas salmonicida subsp. salmonicida, Aeromonas hydrophila, Photobacterium damselae subsp. damselae, Vibrio parahaemolyticus and Salmonella sp. Weak activity was observed for extracts from S. muticum against V. parahaemolyticus. Extracts from U. fasciata possessed moderate activity against A. salmonicida and weak activity against A. hydrophila. These extracts could represent a new source of antibacterial compounds with potential use in aquaculture, as a possible alternative for the treatment of diseases of farmed fish.
File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate

Caricamento pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11570/3011170
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? ND
social impact