Algae Extract
Generic 'algae extract' covers an indeterminate range of species and processing methods, so safety can only be evaluated on a case-by-case basis. Iodine content from some seaweed extracts may exceed safe upper levels, and contamination with heavy metals (arsenic, cadmium) has been documented in seaweed-based extracts.
What it is
Generic umbrella term for substances extracted from various algae species (red, brown, green, micro-algae); can range from food-grade hydrocolloids to cosmetic emollients.
Thickener, gelling agent, color, nutrition source depending on species.
Why it's flagged
- Some seaweed-based extracts may contribute excess iodine
- Heavy-metal contamination (arsenic, cadmium) documented in some seaweed sources
What regulators actually say
"EFSA scientific opinions identify iodine and heavy-metal exposure as relevant considerations for seaweed-derived foods and supplements."
"FDA has issued action levels for inorganic arsenic in food, reflecting heavy-metal exposure concerns from plant- and seaweed-derived ingredients."
Regulatory status
United States — FDA
No single regulatory status; depends on the specific extract and use.
European Union — EFSA
EFSA has flagged iodine and heavy-metal exposure from seaweed/algae-based products.
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