E127 – Erythrosine BS

Colouring

Description

Iodine-containing xanthene dye; disodium salt of 2-(2,4,5,7-tetraiodo-6-oxido-3-oxoxanthen-9-yl)benzoic acid

Risks

Potential hyperactivity in sensitive children; theoretical thyroid hormone disruption due to iodine content

Notes

Erythrosine is a bright cherry-red food colouring that belongs to a family of dyes called xanthenes. It's made synthetically in laboratories by combining iodine with other chemical compounds, which is why it's sometimes called an 'iodine-containing dye.' The manufacturing process creates a vibrant red powder that dissolves easily in water, making it perfect for adding consistent colour to foods. This additive works as a colourant, giving foods an eye-catching red or pink hue. You'll commonly find erythrosine in candies (especially red sweets and lollipops), cake decorations, ice cream, dessert mixes, and some processed foods where manufacturers want to create an appealing red colour. It's particularly popular in confectionery because it creates such a vivid, stable colour that doesn't fade easily. Erythrosine is entirely synthetic and suitable for vegetarians and vegans since it contains no animal-derived ingredients. However, because it contains iodine, people with iodine allergies or thyroid conditions should be aware of its presence in foods. Some countries have restrictions on its use, and it's been banned in cosmetics in some regions, though it remains approved for food use in many places including the EU and US at specified levels.