What is E 640?
E 640 is the E number of Glycine and its sodium salt. The simplest amino acid, with a slightly sweet taste. It is used as a flavour enhancer and carrier.
What is E 640 used for?
E 640 belongs to the group "Other additives" and is used as flavour enhancer, carrier.
- Flavour enhancer: Flavour enhancers enhance the existing taste or odour of a food.
- Carrier: Carriers dissolve, dilute or disperse other additives, flavourings or nutrients without having a technical effect themselves.
Which foods may contain E 640?
According to the European Commission's database, E 640 may be used in 71 food categories and subcategories, each only in specific products and usually with maximum levels. The categories come from these areas:
- Dairy products and analogues
- Fats and oils and fat and oil emulsions
- Edible ices
- Fruit and vegetables
- Confectionery
- Cereals and cereal products
- Bakery wares
- Meat
- Fish and fisheries products
- Eggs and egg products
- Sugars, syrups, honey and table-top sweeteners
- Salts, spices, soups, sauces, salads and protein products
- Foods for specific groups (infants, young children, special medical purposes)
- Beverages
- Ready-to-eat savouries and snacks
- Desserts
- Food supplements
- Processed foods not covered by categories 1 to 17
Is E 640 vegan?
Usually yes: the substance is normally made from plant, mineral or synthetic raw materials or with microorganisms. In individual cases, only the manufacturer or a vegan label can give certainty.
Is E 640 linked to genetic engineering?
No typical link to genetic engineering is known for this substance: it is not usually obtained from plants for which GM varieties exist, nor produced by fermentation.
How does E 640 appear on the label?
In the list of ingredients, the substance appears with its function, followed by the E number or the name, for example "Flavour enhancer: E 640" or "Flavour enhancer: Glycine and its sodium salt".
Sources
- Regulation (EC) No 1333/2008, consolidated version of 18.08.2026, Annexes I and II, EUR-Lex
- Food Additives Database, European Commission (accessed 19 October 2026)