E330 / Antioxidants & acidity regulators
Citric acid
Safety in brief
Safe
Recorded EatMatrix rating, not a new clinical review. The amount, your sensitivities and country rules still matter.
- Watch for
- Recorded sensitivities: Rare reports of sensitivity, sometimes linked to mold-derived production, though the purified acid itself is not an allergen..
- Selected research
- Higher estimated intake of additive-origin citric acid was associated with more new type 2 diabetes diagnoses. This substance is named in the abstract's list of associations retained after adjustment for multiple tests. An association does not prove that it caused diabetes. Study details and limits.
- Our advice
- The exposure was citric acid used as an additive, with naturally occurring intake considered separately. This is not evidence that citrus fruit causes diabetes.
What it is
Citric acid is a weak organic acid found naturally in citrus fruits, though the food-grade version is usually produced industrially by fermenting sugars with mold (typically Aspergillus niger). It is widely used in food and beverages as a flavoring agent, acidulant, and preservative, and as a pH adjuster in cosmetics and cleaning products. It is generally recognized as safe and is one of the most common food additives worldwide.
Also appears on labels as: Citric Acid, E330, E 330, E-330, Food Acid 330, Acidulant E330, 2-Hydroxy-1,2,3-propane-tricarboxylic Acid, Tricarboxylic Acid, Sour Salt, Citrate, Anhydrous Citric Acid, Monohydrate Citric Acid.
Dietary information
- Vegan
- Yes
- Halal
- Yes
- Gluten-free
- Yes
- Allergens
- Caution
Recorded ingredient information. Check the product label or certification: sources, other ingredients and cross-contact can vary.
Research & body effects
What selected 2026 human research means for E330
Type 2 diabetes: what was found
Higher estimated intake of additive-origin citric acid was associated with more new type 2 diabetes diagnoses. This substance is named in the abstract's list of associations retained after adjustment for multiple tests. An association does not prove that it caused diabetes.
The French NutriNet-Santé analysis included 108,723 people and 1,131 new diagnoses, with a median follow-up of 8.05 years. Diets were recorded repeatedly, including food brands. Researchers estimated additive intake and adjusted for factors such as diet, body size and smoking. They did not randomly assign people to eat this additive.
Blood pressure and cardiovascular outcomes
A May 2026 analysis associated citric acid with new hypertension after multiple-test adjustment. This does not mean that every cardiovascular outcome was associated with this additive.
This analysis included 112,395 people overall, with 5,544 new hypertension cases and 2,450 cardiovascular events in the respective analyses. It comes from the same NutriNet-Santé cohort as the diabetes and cancer publications; these are different outcomes, not three independent replications.
EatMatrix’s reading
The exposure was citric acid used as an additive, with naturally occurring intake considered separately. This is not evidence that citrus fruit causes diabetes.
These findings deserve follow-up. Estimated intake, other features of the foods people ate and differences between volunteers can still influence the results. Most participants were women; the results may not transfer directly to children or every country. A proposed mechanism from cells or animals is not a demonstrated mechanism in people eating ordinary food.
A useful next step when choosing food
Compare the whole food: its ingredients, fibre, salt, free sugars, saturated fat and how often you eat it. Choose a varied pattern with more minimally processed foods where practical. Removing one E number alone has not been shown by these studies to prevent diabetes or heart disease.
Selected abstract, main-text methods/results and funding checked . Funders include European and French public research bodies; the authors declare no competing interests. Supplementary tables could not be inspected here, so individual corrected estimates are not reproduced. Indexed records showed no linked correction or retraction in this check; that is not proof none exists. This is a selected editorial review, not a complete clinical or current-country-use assessment. It does not change EatMatrix’s recorded rating or country permissions.
Selected research on E330
How to read study types- Observational studyPreservatives, hypertension and cardiovascular disease in the French cohort
Higher citric acid intake was linked to new hypertension after multiple-test adjustment. This is the same French cohort as the cancer and diabetes papers, not independent replication or proof of causation.
- Observational studyPreservatives and type 2 diabetes in 108,723 French participants
Higher additive-origin citric acid intake was linked to new type 2 diabetes in a French cohort. It is one of 12 associations retained after multiple-test adjustment. Diet was observed, not assigned; this does not show causation.
- Regulator reviewEFSA re-evaluation of acetic, lactic, citric and tartaric acids and related esters
No safety concern at the reported uses and levels.
Earlier source summaries checked ; latest additions checked . See the detailed research section for what was read and the remaining limits. This is a selection of sources, not a complete literature review. Authority assessments apply to the uses and places they cover.
Health notes from our ingredient record
- Generally recognized as safe at typical food-additive levels.
- Frequent exposure to acidic foods and drinks containing citric acid can contribute to dental enamel erosion.
- May cause mouth or throat irritation in a small number of sensitive individuals at high concentrations.
Other references from our ingredient record
These links come from the original ingredient record. They are separate from the source reviews above and have not all been checked for the exact ingredient, amount consumed or claim. Dates are shown newest first.
- Citric Acid: A Nexus Between Cellular Mechanisms and Biomaterial Innovations — Multiple authors, PubMed (2024). This comprehensive review examines citric acid's role in cellular metabolism and its applications in biomaterials. The study found that citric acid, widely used as food additive E330, is generally recognized as safe with minimal adverse effects when consumed in normal dietary amounts. The research highlights that citric acid is naturally occurring in many fruits and plays an essential role in cellular energy production through the Krebs cycle. No significant health concerns were identified for typical food consumption levels, though excessive intake may cause minor gastrointestinal irritation in sensitive individuals.[safe]
Country rules
Country checks for E330
Permission depends on the market, type of food, amount and conditions. A scientific opinion or an E-number alone does not establish a legal use. These checks are separate from the stored EatMatrix rating.
Compare all eight markets and their sources
| Market | What is checked |
|---|---|
| European Union | Regulation (EC) 1333/2008, Annex II Part B, version , contains the exact code E330: Citric acid. Listing alone does not allow every food use. Part E food categories, limits, specifications and applicable later acts still need a product-specific check. Source read: . |
| Great Britain | The FSA register record for E330 (Citric acid) lists “Authorised” in England, Scotland and Wales. Register updated: 01 April 2025; record checked: . Food-specific conditions and specifications still need a separate legal check. |
| United States | Selected US conditions for Citric acid Official federal text current through ; read . Food uses, limits and exceptionsNamed preparation and use conditions The specified citric acid is listed under good manufacturing practice. Its identity, food-grade specifications and permitted production routes matter; this does not mean every fermentation product, citrate salt or industrial-grade acid has the same status. EatMatrix’s reading: a legal use condition answers where and how an ingredient may be used. It is not a test of your product, a personal safe intake or a claim that the ingredient benefits your body. Match the named substance, food and amount. Other federal provisions, food standards, state rules and later changes may also apply; this is a selected source review, not a complete product-compliance decision. |
| Northern Ireland | Review pending. Check the applicable EU rules and territory arrangements; the GB register alone does not establish this status. FSA guidance is a starting source, not a verified permission for this entry. |
| Canada | Named food-use records located. Health Canada lists the preparations below for specified foods and purposes. This is conditional permission for those uses, not approval of every product or a personal safety verdict. Only the named records and conditions below were located. Exact composition and specifications still need matching. Source tables captured . List publication dates are shown separately. Good Manufacturing Practice (GMP) is a condition of use, not an unlimited amount or a recommended intake. Food and Drug Regulations B.16.003 requires the listed source, purpose, amount and other conditions to match. The official consolidation read was current to 21 September 2026; product specifications and applicable later changes still need checking. Read 23 listed food-use conditionsCitric AcidHealth Canada: List of Permitted Food Additives with Other Purposes of Use. List published ; item C.18.
Citric AcidHealth Canada: List of Permitted Acidity Regulators and Acid-Reacting Materials. List published ; item C.16.
Citric AcidHealth Canada: List of Permitted Preservatives. List published ; item C.7.
Citric AcidHealth Canada: List of Permitted Sequestering Agents. List published ; item C.6.
EatMatrix reading: match the exact preparation and food first. A manufacturing limit is not an acceptable daily intake (ADI). A label without the amount cannot establish exposure, and an unlisted name here does not establish a ban. |
| Australia | Review pending. Food Standards Code permissions and conditions need an additive-specific check. FSANZ food-additive rules is a starting source, not a verified permission for this entry. |
| New Zealand | Review pending. Food Standards Code permissions and conditions need an additive-specific check. FSANZ food-additive rules is a starting source, not a verified permission for this entry. |
| Japan | Review pending. The relevant list, identity and use standards need an additive-specific check. CAA food-additive lists is a starting source, not a verified permission for this entry. |
Sources & review status
Check what each source covers: an authority’s conclusion, a research finding and a country’s legal permission answer different questions.
What this guide covers
- Selected research
- 3 source summaries, with publication dates and study types. Several publications may describe the same study population.
- Original ingredient record
- 1 research link; newest recorded date: . Sources added separately to this guide are not included in this count.
This guide brings together our ingredient record and the dated sources shown here. Missing information describes a gap in this guide; it does not mean an ingredient is untested, safe or harmful. This is not a complete review of every study, preparation or current country rule. The amount in a product and how it is used still matter.
How to read the ratings, research and country checksAgency labels recorded by EatMatrix
These are imported database classifications, not verified current statements from each authority. Use the dated official sources below for their actual scope and conclusions.
| Authority | Database label |
|---|---|
| FDA | Safe |
| WHO | Safe |
| EFSA | Safe |
| FSANZ | Safe |
| Japan | Safe |
| UK FSA | Safe |
| Health Canada | Safe |
Database updated: . What does an E number mean on a food label?
Common questions
Frequently asked questions
What is EatMatrix's recorded rating for E330?
The recorded EatMatrix rating for E330 (Citric acid) is “Safe”. It is calculated from labels stored in our ingredient database. These labels are not verified current regulator decisions or country permissions. A database update date is not a scientific review date.
Is E330 vegan, halal or gluten-free?
According to our ingredient data for Citric acid — vegan: yes, vegetarian: yes, halal: yes, kosher: yes, gluten-free: yes, dairy-free: yes. Manufacturing sources can vary between products; check the label if it matters to you.
What is E330 and why is it used?
Citric acid is a weak organic acid found naturally in citrus fruits, though the food-grade version is usually produced industrially by fermenting sugars with mold (typically Aspergillus niger). It is widely used in food and beverages as a flavoring agent, acidulant, and preservative, and as a pH adjuster in cosmetics and cleaning products. It is generally recognized as safe and is one of the most common food additives worldwide.
Does E330 contain allergens?
No known allergens are recorded for Citric acid, with a caution: Rare reports of sensitivity, sometimes linked to mold-derived production, though the purified acid itself is not an allergen..
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This page shows information and classifications recorded in our ingredient database. Current scientific and market-specific verification remains pending as described above. It is general information, not medical advice.