Calcium Propionate

About

What it is and where it shows up.

Calcium propionate is the calcium salt of propionic acid, a short-chain fatty acid that occurs naturally in some foods such as Swiss cheese. It is widely used as an antimicrobial preservative in bread, other baked goods, dairy products, and processed foods to inhibit mould and bacterial growth and extend shelf life.

Safety summary

The regulatory and scientific consensus.

EFSA's 2014 re-evaluation found no safety concern at authorised use levels; JECFA had previously allocated an ADI 'not limited', indicating a high safety margin. The EFSA ANS Panel confirmed there is no concern with respect to genotoxicity or carcinogenicity. Some limited observational reports suggest a possible association between high propionate intake and behavioural changes in children, but this has not been confirmed in controlled studies.

Regulatory landscape

What food-safety regulators have decided.

Jurisdiction	Status	Note
EFSA (European Food Safety Authority) (European Union)	Approved	Authorised under Regulation (EC) No 1333/2008 Annex II; maximum permitted levels range from 1,000–3,000 mg/kg in bakery and cheese products. The 2014 EFSA re-evaluation confirmed no safety concern at currently authorised use levels, but available toxicological data were insufficient to establish a numerical ADI; assessment was instead based on a margin-of-exposure approach relative to site-of-contact irritation.source
Food Standards Agency (FSA) / Food Standards Scotland (FSS) (United Kingdom)	Approved	Retained and approved under UK assimilated Regulation (EC) No 1333/2008 (Annex III) post-Brexit; conditions and permitted levels mirror the pre-exit EU authorisation.source
FDA (Food and Drug Administration) (United States)	Approved	GRAS status confirmed under 21 CFR 184.1221; approved as a preservative in bakery products (21 CFR Part 136), cheeses (21 CFR Part 133), and artificially sweetened fruit jelly and preserves (21 CFR Part 150). Additionally covered under GRAS Notice GRN 000786 for use in processed fruits and vegetables.source

Who should approach with care

Whose guidance would steer them away.

Children — Limited observational reports and case data suggest a possible association between elevated dietary propionate intake and behavioural effects (such as irritability and restlessness) in some children, though this has not been confirmed in well-controlled clinical trials and is not reflected in current EFSA or FDA guidance.

Migraine — Propionates have been reported anecdotally as a potential dietary trigger for migraines in sensitive individuals; while not supported by strong clinical evidence, persons with propionate-sensitive migraine may benefit from limiting intake.

Research citations

The sources behind this verdict.

1FDA. Food Additive Status List — Calcium Propionate (21 CFR 184.1221 and 184.1784). fda.gov
2other. Calcium Propionate — PubChem Compound Summary (CID 19999). pubchem.ncbi.nlm.nih.gov
3FDA. GRAS Notice No. GRN 000786 — Calcium Propionate, 2018. fda.gov
4EFSA. Safety of the extension of use of sodium propionate (E 281) as a food additive, 2016. efsa.europa.eu
5EFSA. 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

Independently researched5 citations