E631 · INS 631Sometimes animal

Disodium inosinate

Common US / international name: disodium inosinate

Origin: Umami flavor enhancer, often paired with glutamate.
What it depends on: Can come from meat or fish extracts, or from microbial fermentation. Labels rarely say which.
Where it typically appears: Instant noodles, snacks, bouillon cubes, savory seasonings.
Product groups: Savory, Other
Source: EU Reg. No 1333/2008 Annex II; Codex CAC/GL 36-1989; Open Food Facts additives taxonomy (ODbL). As of September 1, 2026