Last reviewed May 2026 · 1 min read
Is Guanylic Acid vegan?
Also known as: E626
E-number: E626
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Source can be plant or animal.
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It depends — It can be produced via microbial fermentation of plant starches (vegan) or extracted from fish/sardine RNA (non-vegan).
01 · The basics
What is Guanylic Acid?
A flavor enhancer used to impart a savory, umami taste to foods, often working alongside MSG.
02 · The source
Where it comes from
It can be produced via microbial fermentation of plant starches (vegan) or extracted from fish/sardine RNA (non-vegan). Check with the manufacturer.
03 · Alternatives
Best vegan alternatives
Yeast extract
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Frequently asked
FAQ
Is E626 vegan?
It is a gray area. While microbial fermentation is common, extraction from fish is also used. Look for a vegan certification or fish allergy warning.
Does it have a taste of its own?
Not really. It works synergistically with other glutamates to amplify the meaty, savory flavors in a dish.
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E422 (Glycerol / Glycerin)
A sweet, syrupy liquid used as a humectant in foods and cosmetics.
E920 (L-Cysteine)
A dough conditioner used in commercial bread baking.
Calcium Carbonate
A common mineral used as a white food coloring, an anti-caking agent, and a calcium supplement.
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