E634: Calcium 5'-Ribonucleotides
Main role: flavor enhancement
Also listed as: calcium ribonucleotides, calcium guanylate and inosinate
What is E634 (Calcium 5'-Ribonucleotides)?
E634 is a specified mixture of calcium salts of savory nucleotides. A combined preparation can provide both guanylate and inosinate components under one additive code.
What does it do in food?
Its main role is flavor enhancement. Flavor enhancement changes how a recipe tastes. It does not replace the food’s protein, vegetables, or other nutrients. Salt and other seasonings may still be present, so compare the complete label.
Food and formulation examples
- Seasoning mixtures
- Soups
- Savory sauces
These examples describe formulation roles, not a list of unrestricted legal uses. Availability and permitted applications differ by country and food category.
Label names and ingredient questions
Look for E634, E 634, or the ingredient name. Related names and label terms include calcium ribonucleotides, calcium guanylate and inosinate. A family code can cover more than one specified form; check the full declaration when the distinction matters.
A mixed nucleotide code describes a combination, not one isolated compound. Check the specification if exact composition or manufacturing source matters.
Is E634 safe?
There is no meaningful personal risk estimate from an E number alone. Food-grade specifications, allowed uses, amount consumed, and individual circumstances all matter. The authorization record below gives the legal scope; it is not a claim that every possible use is appropriate.
A label identifies the ingredient but usually not its concentration. Calculating daily intake requires the amount in the food and the quantities eaten.
Authorization and conditions of use
The Great Britain food additive register lists E634 as Calcium 5′-ribonucleotides. This is an entry subject to its stated conditions, not unrestricted permission for every food. The record links to the applicable authorization terms. For an EU product, use the European Commission food additive database to check the relevant food category and limits. Other countries may use different names or rules.