Potassium Propionate

About

What it is and where it shows up.

Potassium propionate is the potassium salt of propionic acid, used as an antimicrobial food preservative to inhibit mould and bacterial growth. It is found naturally in some fermented foods and is widely used in bakery products, cheese, and processed foods to extend shelf life.

Safety summary

The regulatory and scientific consensus.

JECFA established a group ADI of 'not limited' for propionic acid and its calcium, potassium, and sodium salts, maintained since 1973 and reaffirmed in 1997. EFSA's 2014 re-evaluation found no safety concerns for consumers at authorised use levels, noting that forestomach hyperplasia seen in rodent studies is not relevant to humans. The available toxicological database did not permit formal ADI allocation, but exposure at authorised levels remains well below concentrations associated with site-of-contact irritation.

Regulatory landscape

What food-safety regulators have decided.

Jurisdiction	Status	Note
FSANZ (Food Standards Australia New Zealand) (Australia)	Approved	Permitted preservative under the Australia New Zealand Food Standards Code. Safety reviews by JECFA, EFSA, and FDA all confirmed no safety concerns.source
EFSA (European Food Safety Authority) (European Union)	Approved	Authorised under Regulation (EC) No 1333/2008 as E 283. EFSA ANS Panel 2014 re-evaluation confirmed no safety concern; ADI 'not specified' per SCF and JECFA. Permitted primarily in bakery and cheese products up to 3,000 mg/kg.source
Food Standards Agency (FSA) / Food Standards Scotland (FSS) (United Kingdom)	Approved	Retained as an approved food additive (E 283) in Great Britain following Brexit under the GB Register of Approved Regulated Food and Feed Products.source
FDA (Food and Drug Administration) (United States)	Approved	Listed as GRAS under 21 CFR 184.1221 (propionic acid and its salts). Permitted in baked goods, cheeses, confections, and other food categories at levels not to exceed Good Manufacturing Practice (GMP).source

Who should approach with care

Whose guidance would steer them away.

Hypertension — As a potassium salt, high intake of potassium propionate contributes to dietary potassium load; individuals with hypertension who are managing potassium intake should be mindful of cumulative consumption from multiple preservative sources.

Kidney Disease — Individuals with impaired renal function may have difficulty excreting excess potassium; as a potassium-containing additive, high cumulative intake from preserved foods warrants medical guidance per general nephrology dietary principles.

Infants — JECFA and EFSA notes advise general caution with food additives in infant foods; propionates are not specifically authorised for use in infant formula or foods for young infants in the EU under Regulation (EC) No 1333/2008.

Research citations

The sources behind this verdict.

1other. FSANZ Application A1113: Propionates in Processed Meat – Supporting Document 1, 2016. foodstandards.gov.au
2EFSA. Safety of the extension of use of sodium propionate (E 281) as a food additive, 2016. efsa.europa.eu
3EFSA. Scientific Opinion on the re-evaluation of propionic acid (E 280), sodium propionate (E 281), calcium propionate (E 282) and potassium propionate (E 283) as food additives, 2014. efsa.europa.eu
4WHO. JECFA Food Additives Database: Potassium Propionate (INS 283), 1997. apps.who.int

Independently researched4 citations