{
  "$schema": "https://foodadditiveindex.com/api/v1/schema.json",
  "id": "https://foodadditiveindex.com/additives/thaumatin",
  "slug": "thaumatin",
  "name": "Thaumatin",
  "identifiers": {
    "e_number": "E957",
    "ins_number": "957",
    "cas_number": "53850-34-3",
    "inchikey": null,
    "pubchem_cid": null
  },
  "functional_class": "Sweetener",
  "summary": "Thaumatin is a sweet-tasting protein from a West African fruit, thousands of times as sweet as sugar by weight. It is used as much for its ability to enhance and prolong other flavours as for sweetness itself.",
  "derivation_summary": "Extracted with water from the arils of the katemfe fruit, Thaumatococcus daniellii. Because it is a protein it is digested like any other, and it can also be produced by fermentation in engineered microorganisms.",
  "regulatory_status": [
    {
      "jurisdiction": "US",
      "jurisdiction_name": "United States",
      "authority": "Food and Drug Administration",
      "status": "not_listed",
      "status_label": "Not listed",
      "note": "Does not appear on this jurisdiction’s permitted list. That is not the same as being prohibited.",
      "provision_count": 0,
      "provisions": []
    },
    {
      "jurisdiction": "CODEX",
      "jurisdiction_name": "Codex Alimentarius",
      "authority": "Codex Alimentarius Commission / JECFA",
      "status": "permitted_with_conditions",
      "status_label": "Permitted, with conditions",
      "provision_count": 5,
      "provisions": [
        {
          "status": "permitted",
          "food_category": null,
          "max_level": null,
          "max_level_unit": "GMP",
          "conditions": null,
          "effective_from": "1999",
          "citation": {
            "ref": "CXS 192-1995 Table Three, INS 957",
            "url": "https://www.fao.org/fao-who-codexalimentarius/codex-texts/dbs/gsfa/en/"
          },
          "source": "gsfa",
          "retrieved_at": "2026-09-07T07:54:15.059Z"
        },
        {
          "status": "permitted_with_conditions",
          "food_category": {
            "system": "codex",
            "code": "04.2.2.7",
            "name": "Fermented vegetable (including mushrooms and fungi, roots and tubers, pulses and legumes, and aloe vera) and seaweed products, excluding fermented soybean products of food categories 06.8.6, 06.8.7, 12.9.1,"
          },
          "max_level": null,
          "max_level_unit": "GMP",
          "conditions": "GSFA notes: 144",
          "effective_from": "2023",
          "citation": {
            "ref": "CXS 192-1995 Table One, INS 957, food category 04.2.2.7",
            "url": "https://www.fao.org/fao-who-codexalimentarius/codex-texts/dbs/gsfa/en/"
          },
          "source": "gsfa",
          "retrieved_at": "2026-09-07T07:54:15.059Z"
        },
        {
          "status": "permitted_with_conditions",
          "food_category": {
            "system": "codex",
            "code": "11.4",
            "name": "Other sugars and syrups (e.g. xylose, maple syrup, sugar toppings)"
          },
          "max_level": null,
          "max_level_unit": "GMP",
          "conditions": "GSFA notes: 258, 478",
          "effective_from": "2023",
          "citation": {
            "ref": "CXS 192-1995 Table One, INS 957, food category 11.4",
            "url": "https://www.fao.org/fao-who-codexalimentarius/codex-texts/dbs/gsfa/en/"
          },
          "source": "gsfa",
          "retrieved_at": "2026-09-07T07:54:15.059Z"
        },
        {
          "status": "permitted_with_conditions",
          "food_category": {
            "system": "codex",
            "code": "12.1.2",
            "name": "Salt substitutes"
          },
          "max_level": null,
          "max_level_unit": "GMP",
          "conditions": "GSFA notes: 491",
          "effective_from": "2023",
          "citation": {
            "ref": "CXS 192-1995 Table One, INS 957, food category 12.1.2",
            "url": "https://www.fao.org/fao-who-codexalimentarius/codex-texts/dbs/gsfa/en/"
          },
          "source": "gsfa",
          "retrieved_at": "2026-09-07T07:54:15.059Z"
        },
        {
          "status": "permitted_with_conditions",
          "food_category": {
            "system": "codex",
            "code": "14.1.5",
            "name": "Coffee, coffee substitutes, tea, herbal infusions, and other hot cereal and grain beverages, excluding cocoa"
          },
          "max_level": null,
          "max_level_unit": "GMP",
          "conditions": "GSFA notes: 160 & 478",
          "effective_from": "2021",
          "citation": {
            "ref": "CXS 192-1995 Table One, INS 957, food category 14.1.5",
            "url": "https://www.fao.org/fao-who-codexalimentarius/codex-texts/dbs/gsfa/en/"
          },
          "source": "gsfa",
          "retrieved_at": "2026-09-07T07:54:15.059Z"
        }
      ]
    }
  ],
  "names": [
    {
      "name": "53850-34-3",
      "type": "cas",
      "source": "openfoodtox"
    },
    {
      "name": "E 957",
      "type": "common",
      "source": "openfoodtox"
    },
    {
      "name": "THAUMATIN",
      "type": "common",
      "source": "gsfa"
    },
    {
      "name": "E957",
      "type": "e_number",
      "source": "openfoodtox"
    },
    {
      "name": "957",
      "type": "ins",
      "source": "gsfa"
    },
    {
      "name": "Thaumatins, proteins",
      "type": "iupac",
      "source": "openfoodtox"
    }
  ],
  "hazard_reference_values": [],
  "sources": [
    {
      "key": "gsfa",
      "name": "Codex General Standard for Food Additives (CXS 192-1995)",
      "publisher": "Codex Alimentarius Commission (FAO/WHO)",
      "licence": "FAO terms — non-commercial use with attribution",
      "url": "https://www.fao.org/fao-who-codexalimentarius/codex-texts/dbs/gsfa/en/",
      "retrieved_at": "2026-09-07T07:54:15.059Z"
    }
  ],
  "citation_policy": "Cite as: Food Additive Index, \"Thaumatin\", https://foodadditiveindex.com/additives/thaumatin. This site reports regulatory status and does not rate additives.",
  "generated_at": "2026-09-08T00:09:38.743Z"
}