E401Carrier · Emulsifier · Humectant · Sequestrant · Stabiliser · Thickener

Sodium alginate

What the research shows

Prototype

Not enough

published research on this page yet

1 health finding on this page so far · See the findings

A gum from brown algae.

Written from English Wikipedia1

  • Vegan
  • Vegetarian
  • EU permitted

What research says

Animal and lab studies only

  • Benefit

    Body fat and gut germs3

    In animal studies, sodium alginate cut body fat and changed gut germs, but results differed between males and females.

How it’s made and used

  • Fish shelf life2

    A sodium alginate coating on fish fillets slowed spoiling and kept them good longer in cold storage.

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 4,113 products on Open Food Facts that list sodium alginate.

  • MEAT-FREE TASTY SAUSAGES RICHMOND · 304 g 3 additives
  • Traditional Dairy Ice Cream Mackie's of Scotland · 1 L 4 additives
  • Olive Spread Tesco · 500 g 6 additives
  • Cocktail sausages Quorn · 180 g 6 additives
  • Fruit & Oat Bakes Apple Go Ahead · 210 g 13 additives
  • 2 Sausages Quorn · 12 sausages 4 additives

References

  1. 1Alginic acid. Wikipedia. Accessed September 25, 2026.
  2. 2Cruz AIC, Costa MDC, Mafra JF, et al. A sodium alginate bilayer coating incorporated with green propolis extract as a powerful tool to extend Colossoma macropomum fillet shelf-life. Food Chem. 2021;355:129610. doi:10.1016/j.foodchem.2021.129610
  3. 3Chen Z, Ni M, Wang X, et al. The sex-specific effects of sodium alginate with varying viscosities on lipid metabolism and gut microbiota in rats. J Sci Food Agric. 2025;105(13):7578-7590. doi:10.1002/jsfa.70018