What is E 957?
E 957 is the E number of Thaumatin. Sweet-tasting protein from the fruit of the West African katemfe plant. It is used as a sweetener and flavour enhancer, for example in chewing gum.
What is E 957 used for?
E 957 belongs to the group "Sweeteners" and is used as sweetener, flavour enhancer.
- Sweetener: Sweeteners impart a sweet taste. They are used in foods or as table-top sweeteners.
- Flavour enhancer: Flavour enhancers enhance the existing taste or odour of a food.
Which foods may contain E 957?
According to the European Commission's database, E 957 may be used in 15 food categories and subcategories, each only in specific products and usually with maximum levels. The categories come from these areas:
- Dairy products and analogues
- Edible ices
- Confectionery
- Sugars, syrups, honey and table-top sweeteners
- Salts, spices, soups, sauces, salads and protein products
- Beverages
- Ready-to-eat savouries and snacks
- Desserts
- Food supplements
Is E 957 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 957 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 957 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 "Sweetener: E 957" or "Sweetener: Thaumatin".
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)