E957 (Thaumatin) is a plant protein obtained industrially by a process of acidic aqueous extraction from the plant Thaumatococcus daniellii.

What it is used for and where

Food

Ingredient included in the list of European food additives as E957 with a sweetener function. It is authorised in the EU in 15 food categories with maximum permitted levels ranging from 0.5 to 400 mg/kg and at quantum satis in the three food categories of table-top sweeteners. 

Cosmetics

Perfuming. Unlike fragrance, which can also contain slightly less pleasant or characteristic odours, the term perfume indicates only very pleasant fragrances.

Safety

EFSA's Scientific Panel on Food Additives considered that a numerical Acceptable Daily Intake (ADI) is not necessary (1)

• Molecular Formula    C₁₉H₂₉N₃O₃S
• Molecular Weight     379.5
• CAS  53850-34-3
• UNII    KNC9Q0EE6G
• EC Number 258-822-2 

References_____________________________________________________________________

(1) EFSA Panel on Food Additives and Flavourings (FAF), Younes, M., Aquilina, G., Castle, L., Engel, K.H., Fowler, P., Frutos Fernandez, M.J., Fürst, P., Gürtler, R., Gundert‐Remy, U. and Husøy, T., 2021. Re‐evaluation of thaumatin (E 957) as food additive. EFSA Journal, 19(11), p.e06884.