Minerals from Macroalgae Origin: Health Benefits and Risks for Consumers

Area of Science:

• Marine Botany
• Human Nutrition
• Food Science

Background:

• Seaweeds are rich in essential minerals and trace elements.
• Mineral content varies significantly based on seaweed type, environment, and location.
• Edible seaweeds have potential as functional food ingredients and sodium chloride (NaCl) replacers.

Purpose of the Study:

• To review the mineral composition of edible European macroalgae.
• To identify factors influencing mineral accumulation in seaweeds.
• To discuss the implications of seaweed consumption for human health and food applications.

Main Methods:

• Literature review of prevalent edible European macroalgae.
• Analysis of mineral content (e.g., Mg, Fe, Mn, I, Na, K, Zn).
• Evaluation of factors affecting mineral accumulation and bioavailability.

Main Results:

• Chlorophyta (green) are rich in Mg and Fe; Rhodophyta (red) in Mn; Phaeophyta (brown) in I.
• Red and brown seaweeds generally have higher Na, K, and Zn than green seaweeds.
• Seaweed consumption can increase intake of beneficial minerals but poses risks from high iodine and toxic metal accumulation.

Conclusions:

• Seaweeds offer nutritional benefits and functional food potential.
• Careful consideration of iodine and toxic metal levels is crucial for safe consumption.
• European regulations are needed to govern the use of seaweeds in food products.