Caramel Colors (E150a-d)
Score impact
-0.30
points/product
Description
The food additive E150a-d, commonly known as caramel color, is a natural colorant widely used in the food industry. It is obtained by controlled heating of carbohydrates (usually sugars such as sucrose, glucose, or fructose) in the presence or absence of ammonium compounds, acids, or alkalis. There are four main classes: E150a (plain caramel), E150b (caustic sulfite caramel), E150c (ammonia caramel), and E150d (sulfite ammonia caramel).
Each type is produced under specific conditions of temperature, pH, and catalysts, which determine its physicochemical properties and applications. Caramel color is water-soluble, heat- and light-stable, and ranges in color from light yellow to dark brown, depending on the type and concentration. Its main function is to provide color to foods, imitating toasted or brown shades.
Historically, caramel has been used since the 19th century, and was approved in the European Union as a food additive after evaluations by EFSA (European Food Safety Authority) and WHO (World Health Organization). EFSA has established that it is not necessary to set an Acceptable Daily Intake (ADI) for types E150a, E150b, and E150c, as they are considered safe at the levels used. However, for E150d, EFSA has set an ADI of 300 mg/kg body weight per day, due to the presence of 4-methylimidazole (4-MEI), a byproduct that can form during its production.
The overall safety assessment indicates that consumption of these colorants at usual levels does not pose a significant health risk, although moderation is recommended for E150d. On labels, they must appear as "caramel color" followed by the corresponding E number (E150a, E150b, E150c, or E150d).
Caramel color (E150a-d) is used in a wide variety of food categories, including non-alcoholic beverages (cola soft drinks, beers, ciders), bakery products (cookies, cakes), sauces (soy sauce, barbecue sauce), confectionery (candies, chocolates), dairy desserts (ice cream, yogurts), vinegars, and meat products.
In the Spanish market, common examples are Coca-Cola (E150d), beer (E150c), soy sauces (E150a), and hard candies (E150b). The limits authorized by EC Regulation 1333/2008 vary according to the type of caramel and the food category. For example, in non-alcoholic beverages, the maximum limit for E150d is 200 mg/l, while for E150a there is no specific limit (quantum satis). Compared to the FDA, which also approves caramel as an exempt color additive, the EU is more restrictive with E150d due to 4-MEI. Japan also permits its use, but with stricter limits for 4-MEI in some products.
Documented adverse effects of caramel color (E150a-d) are limited. Types E150a, E150b, and E150c are considered safe with no significant side effects at the levels used. However, E150d (sulfite ammonia caramel) may contain 4-methylimidazole (4-MEI), a compound that in animal studies has shown an association with an increased risk of cancer at high doses.
The International Agency for Research on Cancer (IARC) classifies 4-MEI as possibly carcinogenic to humans (Group 2B). Nevertheless, EFSA and WHO conclude that dietary exposure to 4-MEI from E150d is low and does not pose a significant risk to human health at normally consumed levels. Sensitive populations such as children or people with allergies do not appear to be at increased risk. No interactions with medications have been documented.
In conclusion, EFSA has established an ADI of 300 mg/kg body weight per day for E150d, while the other types have no specific ADI, reflecting their favorable safety profile.
- Caramel
- Caramel color
- Plain caramel (Class I)
- Caustic sulfite caramel (Class II)
- Ammonia caramel (Class III)
- Sulfite ammonia caramel (Class IV)
- Sugar caramel
- Burnt sugar color
- Food caramel
- Caramel color syrup
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