Market
Thaumatin is a high-intensity sweet-tasting protein ingredient used globally mainly as a sweetener and flavour enhancer/flavour modifier in formulated foods and beverages. It is defined in international additive systems as INS 957 (Codex/JECFA) and E 957 in the European Union, and in the U.S. its use is commonly supported through GRAS notices reviewed by FDA. Commercial supply is ultimately tied to botanical sourcing from the katemfe fruit (Thaumatococcus daniellii) from West/Central Africa, which creates a niche, specialty-ingredient trade profile rather than a bulk commodity flow. Recent JECFA evaluations also reference recombinant production routes for thaumatin II, signaling a potential pathway for longer-term supply diversification alongside traditional plant extraction.
Specification
Major VarietiesThaumatin I, Thaumatin II
Physical Attributes- Odourless, cream-coloured powder
- Very soluble in water
Compositional Metrics- Obtained by aqueous extraction (pH 2.5–4.0) of the arils of the fruit of Thaumatococcus daniellii
- Not less than 15.1% nitrogen on the dried basis, equivalent to not less than 93% protein (N x 6.2) (JECFA specification)
- Loss on drying: not more than 9.0% (JECFA specification)
- Microbiological criteria include total aerobic plate count limit and E. coli negative requirement (JECFA specification)
Grades- JECFA/FAO Combined Compendium of Food Additive Specifications for Thaumatin (INS 957)
- EU specifications framework for food additives (Commission Regulation (EU) No 231/2012) applies to E 957 (thaumatin)
ProcessingProtein ingredient intended for use at low inclusion levels due to high sweetness intensityThermal and formulation stability is pH- and matrix-dependent (greater heat stability under acidic conditions; aggregation can occur under neutral pH with sufficient heat exposure)
Risks
Supply Concentration HighGlobal thaumatin supply is ultimately dependent on extracting proteins from arils of the West/Central African katemfe fruit (Thaumatococcus daniellii). EFSA reports that the plant material used for extraction has been described by operators as wild-growing and not commercially cultivated, which increases vulnerability to supply disruption, variable availability, and upstream quality variability compared with fully cultivated industrial crops.Qualify multiple suppliers and origins where available, tighten incoming specifications (identity, microbiology, and contaminants), and track emerging alternative supply routes (e.g., recombinant thaumatin II evaluated by JECFA) as part of a diversification strategy.
Regulatory Compliance MediumThaumatin use is governed by jurisdiction-specific frameworks (e.g., Codex GSFA provisions for INS 957, EU authorisation/conditions for E 957, and U.S. GRAS-notice-based uses). Differences in allowed food categories, maximum levels/GMP conditions, and labeling requirements can create reformulation and market-access risk.Maintain a jurisdiction-by-jurisdiction regulatory matrix for target products and confirm that intended use conditions align with Codex/EU/U.S. status before commercialization.
Food Safety MediumAs a proteinaceous ingredient, thaumatin requires robust allergen and safety evaluation controls; EFSA notes that no conclusion on oral allergenicity could be drawn from available human data while also considering it a digestible protein. In addition, compliance with microbiological and contaminant specifications is critical given the botanical origin of the source material.Use validated supplier QA programs, require conformance to JECFA/EU specifications and CoA verification, and implement allergen risk review and appropriate labeling assessments where required.
Occupational Safety MediumProtein powders can pose inhalation sensitisation hazards during handling; EFSA (feed additive assessment) notes thaumatin is considered a respiratory sensitiser due to its proteinaceous nature.Apply dust control measures (local exhaust ventilation), closed handling where feasible, and appropriate PPE and training in blending/packing operations.
Sustainability- Botanical sourcing traceability and variability risk (EFSA notes arils used for extraction are not commercially cultivated and are harvested from the wild, implying dependence on specific ecosystems and collection practices)
- Environmental contamination exposure risk (EFSA discusses potential susceptibility to contaminants such as toxic elements from environmental sources for wild-harvested raw material)
FAQ
What is thaumatin and where does it come from?Thaumatin is a group of intensely sweet proteins isolated from the katemfe fruit (Thaumatococcus daniellii). FDA describes it as a sweet protein ingredient derived from this West African fruit, and JECFA specifications define it as obtained by aqueous extraction from the fruit arils.
Is thaumatin considered an internationally recognized food additive?Yes. WHO’s JECFA database lists thaumatin as INS 957, and the Codex GSFA Online database provides provisions for its use as a sweetener and flavour enhancer under GMP conditions in specified food categories.
How sweet is thaumatin compared with sugar?FDA notes that thaumatin has a sweetness about 2,000 to 3,000 times that of table sugar, which is why it is typically used at very low inclusion levels in finished foods.
Does thaumatin have an acceptable daily intake (ADI)?Both JECFA and EFSA have concluded that a numerical ADI is not needed; JECFA lists an ADI of “not specified,” and EFSA’s re-evaluation concludes there is no safety concern at assessed use levels and that a numerical ADI is not required.