E202 – Potassium sorbate - Food additives database

Safety grading ORANGE- SOME CONCERNS

Potassium sorbate (E202) is widely used to inhibit molds and yeasts. It is the potassium salt of sorbic acid. The European Food Safety Authority (EFSA) re-evaluated sorbic acid and its salts in 2015 and confirmed a group ADI (Acceptable Daily Intake) of 0–25 mg/kg body weight/day, with a 2019 follow-up opinion not changing the core toxicology conclusions. In the U.S., potassium sorbate is listed as GRAS (Generally Recognized as Safe) when used in accordance with good manufacturing practice.

What changed (January 2026): A large French prospective cohort analysis (NutriNet-Santé), published in The BMJ, reported that higher dietary exposure to “total sorbates,” specifically potassium sorbate, was associated with a modestly higher incidence of overall cancer and breast cancer (hazard ratios 1.14 and 1.26 in higher vs lower/non-consumers). This type of observational evidence does not prove causality and can be influenced by confounding, because sorbates are common in ultra-processed foods and dietary patterns are difficult to fully adjust for.

Why ORANGE? Potassium sorbate (E202) is still legally permitted and has a long history of use at low levels. However, a large 2026 human cohort study reported that people with higher dietary exposure to potassium sorbate (within typical diets) had a modestly higher cancer incidence. This does not prove potassium sorbate causes cancer, because it may also reflect the types of foods it is commonly found in (often more processed foods). Still, it is a credible warning signal in real-world data, so we rate E202 as ORANGE – SOME CONCERNS while more studies confirm or refute the finding.

Health considerations: Potassium sorbate can irritate skin, eyes, or airways in concentrated form, and a minority of sensitive individuals may report mild irritation. For most people, the most practical risk-reduction step is not “additive hunting” but reducing frequent intake of the food categories that typically carry the highest sorbate exposure (packaged baked goods, sweetened beverages, processed convenience foods).

Should You Avoid Potassium sorbate?

Generally, you do not need to panic-avoid E202, but frequent consumers of ultra-processed foods may want to reduce intake, as a large prospective cohort study reported an association between higher potassium sorbate exposure and modestly higher cancer incidence (causality not established). If you have a history of sensitivity to sorbates, choosing sorbate-free options is reasonable.

Common Uses

Dairy & cheese: inhibits mold and yeast on rind and processed cheeses.
Baked goods & confectionery: extends shelf life in bread, cakes, muffins, icings.
Beverages: fruit juices, soft drinks, ciders. Helps prevent yeast growth.
Wine: “wine stabilizer” to prevent refermentation after bottling.
Dried foods & meats: dried fruits, cured fish/meat products to slow spoilage fungi.
Personal care: cosmetics and toiletries as a paraben alternative.

Common names / Synonyms

Potassium sorbate
Sorbic acid, potassium salt
E202
Sorbistat‑K (trade name)

What is Potassium sorbate?

Potassium sorbate is the potassium salt of sorbic acid, an unsaturated fatty acid (2,4‑hexadienoic acid). Chemically, it is potassium (2E,4E)‑hexa‑2,4‑dienoate. In foods, sorbate salts are preferred over the free acid because they dissolve better in water while delivering the same active antimicrobial (sorbic acid) once in solution. The antimicrobial effect is strongest in acidic environments (generally effective up to pH ~6.5), where the undissociated acid can penetrate microbial cell membranes and disrupt critical metabolic processes in molds and yeasts.

Commercially, potassium sorbate is produced synthetically at scale. A common route begins with the condensation of ketene with crotonaldehyde to form sorbic acid, neutralization with potassium hydroxide yields potassium sorbate. Although sorbic acid was first isolated from rowan berries (Sorbus aucuparia), modern production does not rely on botanical extraction. The substance appears as a white crystalline powder or granules, typically odorless or with a mild odor, readily soluble in water and ethanol.

In practical use, manufacturers dose potassium sorbate at low levels – often 0.025–0.1% – to suppress spoilage organisms. Because sorbate salts can slightly raise pH, formulators may pair them with acidulants (e.g., citric or lactic acid) to maintain efficacy. After ingestion, sorbates are rapidly absorbed and metabolized via β‑oxidation pathways, ultimately exhaled as carbon dioxide. Multiple evaluations by EFSA (2015 review, 2019 follow‑up) and continual authorization across jurisdictions indicate no safety concern at permitted exposures. Some in‑vitro genotoxic findings have been reported at high concentrations or in combination with nitrites, but these conditions do not reflect normal food use, and weight‑of‑evidence remains reassuring.

Where it’s allowed (EU vs US)

EU/UK: Authorized as E202 across many categories with specific maximum levels (see European Commission additives database).

US: Listed by FDA as GRAS (21 CFR 182.3640) when used according to good manufacturing practice.

Changelog

19.1.2026. Safety grading changed for E202 – Potassium sorbate

From GREEN – SAFE to ORANGE – SOME CONCERNS.

Reason is the new study:
Intake of food additive preservatives and incidence of cancer: results from the NutriNet-Santé prospective cohort

BMJ 2026; 392 doi: https://doi.org/10.1136/bmj-2025-084917 (Published 07 January 2026)

E202 – Potassium sorbate