Annatto vs Anthocyanins: which is worse?

What is Annatto?

Annatto is a natural orange-yellow colorant extracted from the seeds of the achiote tree (Bixa orellana), native to tropical America. The active coloring compounds are bixin (oil-soluble) and norbixin (water-soluble). It has been used for centuries in Latin American cuisine for both coloring and mild flavoring. In processed foods, it provides a yellow to orange color in cheese, butter, and snacks.

What is Anthocyanins?

Anthocyanins are a class of water-soluble pigments found in red, blue, and purple fruits and vegetables (blueberries, red cabbage, elderberries, grapes, black beans). They are flavonoid compounds responsible for the red-to-blue color spectrum in plants. As a food additive (E163), they are extracted from plant sources including grape skins, elderberries, or black carrots.

Documented risks

Annatto: Generally considered safe. However, annatto has been associated with allergic reactions, including hives (urticaria), in sensitive individuals — more frequently than most other natural food colorants. A 2008 review in the Annals of Allergy, Asthma & Immunology documented cases of annatto-induced reactions. There is also ongoing debate among consumer advocates (including CSPI) about whether annatto is truly risk-free due to these allergic properties, though EFSA and FDA maintain it is safe at approved use levels.

Anthocyanins: Anthocyanins are not only safe but are associated with numerous health benefits including antioxidant, anti-inflammatory, and cardioprotective effects, extensively documented in nutritional epidemiology literature. The color is pH-sensitive (red in acid, blue/purple in neutral/alkaline), which can be a formulation challenge but presents no health risk. No significant adverse effects have been identified at food additive use levels.