Preservatives
Calcium propionate
Definition
What it is
Calcium propionate (E282): antifungal preservative used in commercial bread; a 2002 clinical trial found it triggers irritability, sleep disturbance, and restlessness in children.
On the label
Label names covered by this flag
- calcium propionate
- sodium propionate
- propionic acid
- e282
Regulation
Regulatory status
No bans or restrictions are recorded for this ingredient in the jurisdictions clearlabel tracks (US, EU, UK, Canada, Japan, Australia/NZ, Brazil).
Explainer
In plain language
Calcium propionate, listed in the EU as E282, is a preservative that slows the growth of mold and some bacteria. It is the calcium salt of propionic acid, a compound that also occurs naturally in some fermented foods and in the body. Its main job is to keep commercial bread and baked goods from going moldy quickly.
Assessment
Why it is flagged
The most cited concern comes from a 2002 double-blind study in Australia that associated daily bread containing calcium propionate with irritability, restlessness, and sleep disturbance in some children, based on parent reports. That study was small and relied on behavioral observation, and it has not been broadly replicated, so the evidence is limited rather than settled. Regulators including the FDA and EFSA permit calcium propionate, and EFSA has re-evaluated propionates and kept them authorized. Because propionic acid occurs naturally in some foods and in the gut, exposure is not limited to added preservatives. Clear Label flags it because bread is eaten daily by many households and because the behavioral pattern, if real for a given child, is exactly the kind of thing worth testing in food and symptom logs.
In the aisle
Where it commonly shows up
- Packaged and commercial bread
- Buns, rolls, and bagels
- Tortillas and flatbreads
- Packaged baked goods and cakes
- Some cheeses
- Pizza dough and crusts
Practical
Reading the label
It appears as calcium propionate, sodium propionate, propionic acid, or E282 in the EU, almost always in the bread and bakery aisle. Freshly baked bread from an in-store bakery is less likely to contain it than long-shelf-life packaged loaves.
Alternatives
If you want to avoid it
Some people choose freshly baked bread with a short ingredient list, or loaves preserved by freezing rather than added preservatives. Sourdough and bakery bread often skip propionates entirely, so comparing labels helps.
FAQ
Common questions
Does calcium propionate affect children's behavior?
A small 2002 study associated it with irritability and sleep disturbance in some children based on parent reports, but it has not been widely replicated. The evidence is limited, which is why Clear Label frames it as a pattern to test rather than a settled effect.
Is calcium propionate natural?
Propionic acid, the basis of this preservative, occurs naturally in some fermented foods and in the body. The added form used in bread is manufactured, but it is chemically the same acid.
Why is it in so much bread?
It is an effective and inexpensive mold inhibitor, which lets packaged bread stay fresh-looking on the shelf for longer. That is why it is common in long-shelf-life loaves.
Citations
Sources
Citation
Primary reference
About this page: the definition, label names, severity, and regulatory chips come from the clearlabel ingredient taxonomy, the same data the scanner uses to score products. Research summaries describe associations reported in published studies, not diagnoses; individual responses vary. Scan any product with clearlabel to see which of its ingredients carry flags.