Last reviewed May 2026 · 1 min read
Is Propylene Glycol Alginate vegan?
Also known as: PGA, E405
E-number: E405
Vegan
Suitable for a vegan diet.
Yes — It is produced from seaweed extract and propylene glycol.
01 · The basics
What is Propylene Glycol Alginate?
An ester of alginic acid used as a stabilizer in acidic foods and as a foam stabilizer in beer.
02 · The source
Where it comes from
It is produced from seaweed extract and propylene glycol. It is 100% vegan.
Frequently asked
FAQ
Is E405 vegan?
Yes, it is derived from marine seaweed.
Commonly found in
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