E621: Monosodium glutamate

What it does

Boosts savoury (umami) flavour (stock cubes, crisps, instant noodles).

What it is made from

Made by fermenting sugars or starches (corn, sugar beet, sugar cane, tapioca).

Allergies and diets

• Gluten? Can be made from wheat or another gluten cereal (the source is not always named).
• Corn (maize)? Can be made from corn (maize).

Considered gluten-free because it is made by fermentation. A few people report sensitivity to it.

General information, not medical advice. Sources differ between manufacturers: check the label or ask the maker.

Flavour enhancers

• E620 Glutamic acid
• E622 Monopotassium glutamate
• E623 Calcium diglutamate
• E624 Monoammonium glutamate
• E625 Magnesium diglutamate
• E626 Guanylic acid
• E627 Disodium guanylate
• E628 Dipotassium guanylate
• E629 Calcium guanylate
• E630 Inosinic acid
• E631 Disodium inosinate
• E632 Dipotassium inosinate

← E620E622 →