E405Carrier · Emulsifier · Stabiliser · Thickener

Propane-1‚2-diol alginate

What the research shows

Prototype

Not enough

published research on this page yet

How we decide

A thickener made from kelp.

It helps mix, steady and thicken foods.

Written from English Wikipedia1

  • Vegan
  • Vegetarian
  • EU permitted

What research says

Study type not stated

  • No harm found

    Additive breakdown in body2

    Propane-1,2-diol alginate breaks down in the body, and scientists found no safety concern at the amounts used in food.

The signal at the top counts the findings in people and in animal and lab studies. A concern in studies of people outranks animal and lab studies, and “No concerns” needs at least two findings in people. Findings whose study type is not stated are shown but not counted. This page is a reference, not medical advice. It describes what regulators and published research say. Talk to a doctor or dietitian about your own diet.

Regulatory status

Checked Sep 2026

Status reflects the named register on the date checked. It is not a safety rating.

How we check

Products

The 6 most-scanned of 842 products on Open Food Facts that list propane-1‚2-diol alginate.

  • Perinaise Nando's · 265 g 6 additives
  • PERi-PERi SAUCE Medium Nando's · 120 g 3 additives
  • Fresh Garlic Caesar la maison · 1.4 L 9 additives
  • Peri peri sauce Nando’s · 500 g 4 additives
  • Peri Peri Sauce Hot Nando's · 500 g 4 additives
  • PERI-naise PERi-PERi MAYO Mild Nando's 7 additives

References

  1. 1Propylene glycol alginate. Wikipedia. Accessed September 26, 2026.
  2. 2Younes M, Aggett P, Aguilar F, et al. Re-evaluation of propane-1,2-diol alginate (E 405) as a food additive. EFSA J. 2018;16(7):e05371. doi:10.2903/j.efsa.2018.5371