E131 – Patent Blue V
ColouringDescription
Synthetic organic dye
Risks
Potential for severe hypersensitivity reactions (anaphylactoid reactions, urticaria)
Notes
Patent Blue V is a synthetic blue food colouring created in chemical laboratories from petroleum-derived compounds. It's made through a complex chemical process that combines various organic molecules to create a compound that produces a distinctive blue colour. The 'V' in its name distinguishes it from other similar blue dyes, and 'patent' refers to its origins as a proprietary synthetic dye developed for industrial use before being adapted for food. This additive serves as a colourant to give foods an attractive blue tint, either on its own or mixed with other colours to create purple, green, or other shades. You might find Patent Blue V in blue-coloured sweets, decorative icings, beverages, ice creams, and novelty foods where an unusual blue colour is desired. It's particularly useful because it remains stable under different temperatures and pH conditions, so the colour stays consistent during food processing and storage. As a completely synthetic additive, Patent Blue V is suitable for both vegetarians and vegans. It doesn't contain any known major allergens, making it generally safe for most people with food allergies. However, like many synthetic food colours, some individuals may experience sensitivity to it, and some studies have suggested links between certain artificial colours and hyperactivity in children, though the evidence remains debated among scientists.