title: Antimicrobial effects of marine algal extracts and cyanobacterial pure compounds against five foodborne pathogens.
abstract: The marine environment is a proven source of structurally complex and biologically active compounds. In this study, the antimicrobial effects of a small collection of marine-derived extracts and isolates, were evaluated against 5 foodborne pathogens using a broth dilution assay. Results demonstrated that algal extracts from Padina and Ulva species and cyanobacterial compounds antillatoxin B, laxaphycins A, B and B3, isomalyngamide A, and malyngamides C, I and J showed antimicrobial activity against Gram positive foodborne pathogens (Listeria monocytogenes, Bacillus cereus and Staphylococcus aureus) at low concentrations (⩽ 500 μg/ml). None of the algal extracts or cyanobacterial isolates had antibacterial activity against Gram negative bacteria (Escherichia coli and Salmonella enterica serovar Typhimurium).
authors.affiliation: INRS-Institut Armand-Frappier, Canadian Irradiation Center, Research Laboratories in Sciences Applied to Food, 531, Blvd des Prairies, Laval, QC H7V 1B7, Canada.
authors.forename: Dominic
authors.initials: D
authors.lastname: Dussault
authors.affiliation: INRS-Institut Armand-Frappier, Canadian Irradiation Center, Research Laboratories in Sciences Applied to Food, 531, Blvd des Prairies, Laval, QC H7V 1B7, Canada.
authors.forename: Khanh Dang
authors.initials: KD
authors.lastname: Vu
authors.affiliation: Department of Natural Sciences, Hawaii Pacific University, 45-045 Kamehameha Hwy, Kaneohe, HI 96744, United States.
authors.forename: Tifanie
authors.initials: T
authors.lastname: Vansach
authors.affiliation: Department of Natural Sciences, Hawaii Pacific University, 45-045 Kamehameha Hwy, Kaneohe, HI 96744, United States.
authors.forename: F David
authors.initials: FD
authors.lastname: Horgen
authors.affiliation: INRS-Institut Armand-Frappier, Canadian Irradiation Center, Research Laboratories in Sciences Applied to Food, 531, Blvd des Prairies, Laval, QC H7V 1B7, Canada. Electronic address: monique.lacroix@iaf.inrs.ca.
authors.forename: Monique
authors.initials: M
authors.lastname: Lacroix
mesh_terms: D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D001409:Bacillus cereus / Q000187:drug effects; D000458:Cyanobacteria / Q000737:chemistry*; D005516:Food Microbiology; D008089:Listeria monocytogenes / Q000187:drug effects; D008826:Microbial Sensitivity Tests; D000459:Phaeophyceae; D012486:Salmonella typhimurium / Q000187:drug effects; D013211:Staphylococcus aureus / Q000187:drug effects; D044445:Ulva
chemical_list: D000900:Anti-Bacterial Agents
keywords: Antimicrobial; Cyanobacteria; Foodborne pathogens; Marine algae