Radionuclides and selected trace elements in marine protein concentrates

Area of Science:

• Marine Biology
• Environmental Science
• Food Science

Background:

• Marine protein concentrates are increasingly utilized globally.
• Understanding the elemental composition of these products is crucial for food safety.
• Previous studies focused on benthic fish, necessitating research on surface feeders.

Purpose of the Study:

• To quantify trace element and radionuclide concentrations in marine protein concentrates from surface feeding fish.
• To identify potential dietary risks associated with consuming these products.

Main Methods:

• Analysis of trace elements (Pb, Co, Ag) and radionuclides (210Pb, 210Po) in fish protein concentrates.
• Comparison of concentrations with those found in concentrates from benthic fish.

Main Results:

• The 210Pb-210Po radionuclide pair were the most significant in concentrates from surface feeding fish.
• Elevated concentrations of stable lead (Pb), cobalt (Co), and silver (Ag) were detected.
• These levels suggest a substantial contribution to current dietary intakes.

Conclusions:

• Marine protein concentrates from surface fish pose potential dietary risks due to high trace element and radionuclide content.
• Further research is needed to establish safe consumption limits.
• Monitoring of elemental composition in seafood-derived products is recommended.