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Caramel Colour (E150): Food Dye Explained

Caramel colour is a widely used food colouring made by heating sugar. It gives foods and drinks a brown hue and is classified under E numbers E150a to E150d in the European Union.

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Things worth knowing about "Caramel colour"

Caramel colour is a widely used food colouring made by heating sugar. It gives foods and drinks a brown hue and is classified under E numbers E150a to E150d in the European Union.

What is Caramel Colour?

Caramel colour (also written as caramel color) is one of the most widely used food additives in the world. It is produced by the controlled heating of carbohydrates such as sucrose, glucose, or fructose, often with the addition of acids, alkalis, or salts. In the European Union, it is classified under the food additive codes E150a to E150d.

Types and Classification

Caramel colour is divided into four classes depending on the production method and reagents used:

E150a – Plain Caramel: Made by heating sugar without any additional reactants. Considered the purest form and is widely regarded as safe.
E150b – Caustic Sulphite Caramel: Produced using sulphite compounds. Rarely used in modern food production.
E150c – Ammonia Caramel: Made using ammonium compounds. Commonly found in beer and soy sauce.
E150d – Sulphite Ammonia Caramel: Produced with both ammonium and sulphite compounds. Widely used in cola-type soft drinks.

Common Uses in Food and Beverages

Caramel colour is used across a broad range of food and beverage products to achieve an appealing brown to dark brown colour. Common applications include:

Cola and other soft drinks
Beer, whisky, and other alcoholic beverages
Sauces, gravies, and condiments (e.g., Worcestershire sauce, soy sauce)
Baked goods, bread, and pastries
Confectionery, chocolate, and sweets
Ready-made soups, broths, and stocks

Health Assessment

The European Food Safety Authority (EFSA) has evaluated caramel colours on multiple occasions. Plain caramel (E150a) is considered safe for consumption. However, E150d has attracted greater scientific scrutiny because its manufacturing process can produce the compound 4-methylimidazole (4-MEI), which has shown carcinogenic potential in animal studies. Regulatory authorities in Europe currently consider the levels consumed through a normal diet to be safe, but ongoing monitoring is recommended.

Allergies and Intolerances

Individuals with a sulphite sensitivity or allergy should be cautious with products containing E150b and E150d, as these may contain sulphite residues. Sulphites can trigger allergic reactions in sensitive individuals, particularly asthma-like symptoms.

Labelling Requirements

In the European Union, foods containing caramel colour must declare it in the list of ingredients, either as caramel colour or by its specific E number (E150a–d). This ensures transparency and allows consumers to make informed purchasing decisions.

Acceptable Daily Intake (ADI)

No specific ADI has been established for E150a, as it is considered safe without restriction. For E150c and E150d, EFSA has set an ADI of 300 mg per kg of body weight per day.

References

European Food Safety Authority (EFSA): Re-evaluation of caramel colours (E 150 a, b, c, d) as food additives. EFSA Journal, 2011.
World Health Organization (WHO) / FAO: Compendium of Food Additive Specifications – Caramel Colours. JECFA Monographs.
U.S. Food and Drug Administration (FDA): Code of Federal Regulations – Title 21, Section 73.85: Caramel.

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