Northwest Fisheries Science Center

Display All Information

Document Type: Magazine Article
Center: NWFSC
Document ID: 8340
Author: Vanessa Carrasco, John E. Colt, Linda D. Rhodes
Year: 2015
Title: Bacterial safety screening of cultured macroalgae raised in an intensive land-based system
Magazine: World Aquaculture
Volume: 46
Issue: 3
Pages: 60-62

Macroalgae, also known as seaweed, is a common food item in the Asian diet, but has limited presence in the North American market. The high nutritional value and potential for local cultivation in coastal areas offer an excellent opportunity for aquaculture in the US, however basic seafood safety standards need to be established.  Three species of Pacific seaweed grown in land-based culture system at the Manchester Research Center in Puget Sound, Washington state (USA) were assessed for the presence of several known bacterial agents of concern for seafood:  Listeria monocytogenes, Vibrio parahaemolyticus, Escherichia coli, & total coliforms.  We adapted methods from the Food & Drug Administration's Bacteriological Analytical Manual for analysis of other seafoods such as smoke fish products and shellfish, because methods for seaweed have not yet been developed.  Although no detectabl bacterial pathogens were detected, validated methods for screening seaweeds are needed if macroalgal culture can expand to become a thriving aquaculture.

Theme: Sustainable, safe and secure seafood for healthy populations and vibrant communities
Foci: Provide scientific support to ensure safe seafood for healthy populations and characterize how human activities and climate affect risks from pathogens, chemical contaminants and biotoxins
Develop research and technology to foster innovative and sustainable approaches to aquaculture.