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E436 – Polysorbate 65: Food Emulsifier Explained

E436 (Polysorbate 65) is an approved food emulsifier that blends fats and water together, used in various food products to improve texture and stability.

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Things worth knowing about "E436"

E436 (Polysorbate 65) is an approved food emulsifier that blends fats and water together, used in various food products to improve texture and stability.

What is E436?

E436, also known as Polyoxyethylene(20) sorbitan trioleate or Polysorbate 65, is a synthetically produced food emulsifier. It is derived from sorbitol, oleic acid, and ethylene oxide and belongs to the polysorbate family of food additives. In the food industry, it is used to combine ingredients that would not normally mix – such as oil and water – helping to create a uniform texture and extending the shelf life of products.

Origin and Production

E436 is a fully synthetic additive. It is produced through the chemical reaction of sorbitol (a sugar alcohol) with oleic acid (an unsaturated fatty acid), followed by treatment with ethylene oxide. The resulting product is a waxy, amber-coloured substance that is solid or semi-solid at room temperature.

Function and Mechanism of Action

E436 functions as an emulsifier and stabiliser. Emulsifiers have both water-soluble (hydrophilic) and fat-soluble (lipophilic) molecular components, allowing them to position themselves at the interface between oil and water and form a stable emulsion. In practice, E436 prevents the separation of fat and water phases in food products and ensures a uniform, smooth consistency.

Use in Food Products

E436 is approved in the European Union under Food Additive Regulation (EC) No. 1333/2008. Typical applications include:

Ice cream and frozen desserts: Improving creaminess and preventing ice crystal formation
Baked goods and cakes: Stabilising dough and improving texture
Cocoa products and chocolate: Homogenising cocoa and fat mixtures
Confectionery and caramel: Improving consistency and processability
Fat emulsions and margarines: Stabilising water-in-oil emulsions

Safety and Health Assessment

The European Food Safety Authority (EFSA) has evaluated E436 as a food emulsifier. At approved levels, E436 is considered safe for most people. No carcinogenic or mutagenic properties have been identified. However, several points should be noted:

At very high doses, E436 may cause gastrointestinal discomfort such as bloating or diarrhoea in sensitive individuals.
Animal studies suggest that long-term, very high intake of polysorbates could affect the gut microbiome. However, the relevance of these findings for humans at typical dietary intake levels has not been conclusively established.
Allergic reactions to E436 are rare but may occur in individuals with known hypersensitivity to polysorbates.

Labelling and Consumer Information

Under EU labelling regulations, E436 must be declared on food ingredient lists either as E436 or by its full name Polyoxyethylene(20) sorbitan trioleate or Polysorbate 65. Consumers who wish to avoid food additives should read ingredient labels carefully.

References

European Food Safety Authority (EFSA): Re-evaluation of polyoxyethylene sorbitan monolaurate (E 432), polyoxyethylene sorbitan monooleate (E 433), polyoxyethylene sorbitan monopalmitate (E 434), polyoxyethylene sorbitan monostearate (E 435) and polyoxyethylene sorbitan tristearate (E 436) as food additives. EFSA Journal, 2015.
European Commission: Regulation (EC) No. 1333/2008 of the European Parliament and of the Council of 16 December 2008 on food additives.
Rinaldi L. et al.: Polysorbates in food and their impact on gut microbiota – a narrative review. Food Chemistry, 2023.

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