Scrannr
Additives

Thiabendazole (E233): What It Is and Is It Safe?

Moderate Preservative / Systemic Fungicide

Systemic benzimidazole fungicide applied post-harvest to citrus fruit and bananas. Unlike biphenyl and phenylphenol, thiabendazole is absorbed into the fruit and can be detected in the flesh, not just the skin. Residue limits are strictly regulated, but those using large quantities of zest should wash fruit very thoroughly. Thiabendazole is also used as a pharmaceutical antiparasitic in humans and animals, indicating significant biological activity.

Category
Preservative / Systemic Fungicide
Typically used in
Post-harvest treatment of citrus fruits and bananas (systemic, penetrates flesh)
Regulatory status
Approved EU/USA/UK for post-harvest treatment. Must be declared. Systemic, penetrates flesh.
Concerns flagged
Endocrine disruptionReproductive-health concern

Scrannr flags Thiabendazole automatically when you scan a barcode.

Sources

Where this comes from

  1. EFSA (2011) — Scientific Opinion on the re-evaluation of thiabendazole -E 233- as a food additive https://efsa.onlinelibrary.wiley.com/doi/10.2903/j.efsa.2011.2283
Products

Products containing Thiabendazole

We're building product pages that show real UK products containing Thiabendazole, using Open Food Facts data. They'll appear here soon — in the meantime, scan any barcode with the Scrannr app to check for it instantly.

Let Scrannr read the label.

Scan a barcode and get the additives flagged in plain English, plus a clear health score. Free to download.