The Evidence

The safest
sweetener record
in the world.

Thaumatin has been reviewed by every major food safety authority on earth. The verdict is consistent, clear, and unambiguous.

ADI: Not Specified
JECFA · EFSA · Joint FAO/WHO Expert Committee
This is the highest possible safety designation in food additive science. "Not specified" means that after exhaustive review of all available data, regulators were unable to establish any harmful intake level. No numerical limit was necessary because no harm was found at any realistic consumption amount.
Global Regulatory Approvals

Every major food safety
authority agrees.

E957
European Union — Since 1984
Approved as a permitted food additive and flavor enhancer. EFSA conducted a full re-evaluation in 2015 and confirmed the original safety conclusion, maintaining the ADI of "not specified." Used in EU food products for over 40 years.
GRAS
US FDA — GRN No. 000910
Generally Recognized as Safe status formally acknowledged by the US Food and Drug Administration. GRAS notification accepted, permitting use in US food and beverage products. North America now leads global thaumatin consumption at 36%+ of world market.
JECFA
Joint FAO/WHO Expert Committee
Reviewed thaumatin in 1979 and assigned an ADI of "not specified" — the maximum safety rating. Subsequent reviews have confirmed this designation. JECFA is the gold standard for international food additive safety assessment.

Additional approvals: Health Canada (2023), Japan, Australia/New Zealand (FSANZ), and numerous other jurisdictions. Thaumatin is one of the most globally approved natural sweeteners in commercial use.

Certificate of Analysis

Our thaumatin powder:
pharmaceutical-grade purity.

Every batch of thaumatin used in Pure Plant Sweet™ is sourced from Xi'an Lyphar Biotech Co., Ltd. (CAS No. 53850-34-3) with full Certificate of Analysis documentation. The data below reflects actual batch test results.

AnalysisSpecificationActual ResultStatus
DescriptionWhite powder, no odor, sweet tasteConforms✓ Pass
Assay (HPLC)≥98%99.25% – 99.42%✓ Pass
SolubilitySoluble in waterConforms✓ Pass
Loss on Drying≤2.5%1.4% – 1.8%✓ Pass
pH5.0 – 6.55.2 – 5.5✓ Pass
Heavy Metals≤5ppmConforms✓ Pass
Aluminium≤1ppmConforms✓ Pass
Arsenic≤1ppmConforms✓ Pass
Lead≤1ppmConforms✓ Pass
E. coliNegative in 1gNegative✓ Pass
Yeast & Mould≤100 cfu/gConforms✓ Pass
Total Bacterial Count≤1000 cfu/gConforms✓ Pass
Infrared SpectrumConforms to structureConforms✓ Pass
HPLC ProfileConforms to structureConforms✓ Pass
Relative Substance≤1.0%0.78% – 0.79%✓ Pass

Full Certificates of Analysis are available upon request. Contact us at orders@iodineproducts.com.

The Comparison That Matters

Thaumatin vs. the
alternatives.

Aspartame
NutraSweet · Equal
Synthetic chemical — not found in nature
Triggers insulin via vagus nerve (2025)
IARC Group 2B — possible carcinogen (2023)
Promotes atherosclerosis in animal models
FDA approved (1981 data)
ADI: 50mg/kg body weight — numerical limit set
No nutritional benefit
Stevia
Rebaudioside A
Plant-derived source
Zero glycemic impact
Heavily processed — often refined to isolate
Bitter metallic aftertaste (most products)
Some GI sensitivity reported
Generally recognized as safe
No nutritional benefit
Thaumatin
Pure Plant Sweet™
100% plant protein — food, not chemical
Zero glycemic impact — no insulin response
ADI "not specified" — maximum safety rating
EU E957 approved since 1984
US FDA GRAS — GRN 000910
Clean, pleasant taste — no bitter aftertaste
Contains iodine — daily nutritional benefit
Regulatory Classification

Not dangerous.
Not hazardous.
Not classified.

Under EU GHS Regulation (EC) No. 1272/2008, thaumatin is not classified as dangerous. The Material Safety Data Sheet for pharmaceutical-grade thaumatin powder confirms:

  • ✓ Not classified as dangerous per GHS/CLP
  • ✓ Not classified as a carcinogen
  • ✓ Not classified as a mutagen
  • ✓ Not classified as a reproductive toxin
  • ✓ Not dangerous goods for transport
  • ✓ No ecological problems expected with normal use

Thaumatin's safety profile is the product of its fundamental nature as a protein. Proteins are the body's native building blocks — the human body has extensive, highly optimized mechanisms for digesting, absorbing, and utilizing dietary proteins. When you consume thaumatin, your digestive system sees a 207-amino-acid protein chain. It does what it always does with protein: it breaks it down completely into amino acids and absorbs them.

There are no chemical byproducts of concern. No phenylalanine accumulation (as with aspartame). No methanol release. No formaldehyde. Just amino acids — the same building blocks found in any food protein you already eat.

This is what "safe" actually means. Not "approved at certain doses." Not "acceptable risk." Safe.