E628 – Dipotassium guanylate

Description

Colorless to white crystals or powder; odorless

Risks

Notes

Dipotassium guanylate is made by combining guanosine monophosphate (GMP) - a natural compound found in all living cells - with potassium. GMP can be extracted from yeast, fish, or mushrooms, or it can be produced through fermentation using bacteria or yeast. The process creates colorless to white crystals that dissolve easily in water and have virtually no taste on their own. This additive works as a flavor enhancer, particularly boosting savory, meaty, or umami tastes in food. It's most effective when combined with monosodium glutamate (MSG) or similar compounds, creating a more intense flavor experience than either ingredient alone. You'll find dipotassium guanylate in processed foods like instant soups, seasoning mixes, snack foods, cured meats, and ready meals. While dipotassium guanylate can be derived from natural sources, the commercial version is typically produced synthetically through fermentation. It's generally suitable for vegetarians and vegans when made via fermentation, but may not be if derived from fish sources - checking with manufacturers is recommended for strict dietary requirements. People with gout or those on low-potassium diets should be aware of its presence, though the amounts used in food are typically small.