E640: Glycine and Its Sodium Salt
Main role: flavor modification
Also listed as: glycine, sodium glycinate, glycocoll
What is E640 (Glycine and Its Sodium Salt)?
E640 covers glycine, an amino acid, and its sodium salt. These ingredients can modify flavor in suitable foods, with the exact use depending on the formulation.
What does it do in food?
Its main role is flavor modification. 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
- Flavor preparations
- Savory mixtures
- Specified food formulations
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 E640, E 640, or the ingredient name. Related names and label terms include glycine, sodium glycinate, glycocoll. A family code can cover more than one specified form; check the full declaration when the distinction matters.
An amino acid used for flavor is not evidence that a serving delivers a studied supplement dose. Claims about sleep or other benefits need separate evidence and quantity information.
Is E640 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 E640 as Glycine and its sodium salt. 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.