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E434 – Polysorbate 40: Food Emulsifier Explained

E434 (Polysorbate 40) is a synthetic emulsifier used in food products to blend water and fat, ensuring a smooth and stable consistency.

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Things worth knowing about "E434"

E434 (Polysorbate 40) is a synthetic emulsifier used in food products to blend water and fat, ensuring a smooth and stable consistency.

What is E434?

E434, commonly known as Polysorbate 40 or Polyoxyethylene Sorbitan Monopalmitate, is a synthetically produced food emulsifier. It belongs to the polysorbate family, which is manufactured by reacting sorbitol with palmitic acid, followed by ethoxylation. As an approved food additive in the European Union, it carries the E-number 434.

Production and Chemical Properties

E434 is produced through a chemical reaction involving sorbitol (a sugar alcohol), palmitic acid (a saturated fatty acid), and ethylene oxide. The resulting molecule contains both fat-soluble and water-soluble components, making it an effective surfactant and emulsifier. It typically appears as a yellowish-amber, viscous liquid or waxy solid and is readily soluble in water.

Use in Food Products

E434 is used in a variety of food products to:

Combine water and oil into a stable emulsion
Improve the texture and consistency of products
Increase the volume of baked goods
Extend the shelf life of products
Ensure even distribution of flavors and colorings

Typical applications include baked goods, ice cream, whipped cream substitutes, confectionery, sauces, and emulsified meat products.

Health Assessment and Safety

The European Food Safety Authority (EFSA) and other international regulatory bodies such as the Joint FAO/WHO Expert Committee on Food Additives (JECFA) have evaluated E434. An acceptable daily intake (ADI) has been established for the polysorbate group as a whole.

Animal studies at very high doses have shown potential effects on gut flora (the microbiome). In humans, no adverse health effects are expected when the approved maximum limits are observed. Nevertheless, it is generally advisable to consume strongly processed foods containing multiple additives in moderation.

Possible Intolerances

In rare cases, sensitive individuals may experience mild allergic reactions or gastrointestinal discomfort in response to polysorbates. People with known hypersensitivity to polysorbates should carefully check ingredient labels on food products.

Labeling and Legal Framework

In the European Union, E434 is approved under Regulation (EC) No 1333/2008 on food additives. It must be declared in the ingredient list either as E434 or as Polysorbate 40. Permitted maximum levels vary depending on the food category.

Distinction from Other Polysorbates

E434 belongs to the polysorbate family, which includes several other approved emulsifiers:

E432 – Polysorbate 20 (based on lauric acid)
E433 – Polysorbate 80 (based on oleic acid)
E435 – Polysorbate 60 (based on stearic acid)
E436 – Polysorbate 65 (based on stearic acid, triester)

The differences between individual polysorbates lie in the fatty acid used and the degree of ethoxylation, which influences their respective properties and areas of application.

References

European Food Safety Authority (EFSA): Re-evaluation of polyoxyethylene sorbitan monolaurate (E 432), monopalmitate (E 434), monostearate (E 435), tristearate (E 436) and monooleate (E 433) as food additives. EFSA Journal, 2015.
Joint FAO/WHO Expert Committee on Food Additives (JECFA): Polysorbates. WHO Food Additives Series. Geneva, 2006.
Regulation (EC) No 1333/2008 of the European Parliament and of the Council of 16 December 2008 on food additives. Official Journal of the European Union.

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