Last reviewed May 2026 · 1 min read
Is Sodium Alginate vegan?
Also known as: Algin, Alginic acid sodium salt
E-number: E401
Vegan
Suitable for a vegan diet.
Yes — It is entirely plant-based (marine-based), extracted directly from the cell walls of brown algae.
01 · The basics
What is Sodium Alginate?
A natural polysaccharide extracted from brown seaweed, used as a thickener and gelling agent, especially in spherification (molecular gastronomy).
02 · The source
Where it comes from
It is entirely plant-based (marine-based), extracted directly from the cell walls of brown algae.
03 · Alternatives
Best vegan alternatives
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Frequently asked
FAQ
Is sodium alginate vegan?
Yes, it is 100% vegan. It is derived solely from seaweed.
Is sodium alginate safe to eat?
Yes, it is a safe, natural dietary fiber that passes through the body largely undigested.
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