Survey of usage and estimated intakes of annatto extracts

In 2002, the Joint FAO/WHO Expert Committee on Food Additives requested information relating to the toxicity, intake and specifications of annatto. Previous intake estimates for annatto provided ambiguous results because the bixin/norbixin content of annatto extract was unclear. European annatto producers consulted with the food industry to determine use levels of specific annatto extracts. These data were combined with the levels of bixin/norbixin in particular extracts to estimate the concentration of bixin/norbixin in foods. Concentrations in food were combined with data about food consumption using various methods to estimate consumer intakes, which ranged from less than 1-163% of the acceptable daily intake (0.065 mg/kg bw/day). Higher intake estimates are conservative because they assume that a consumer always chooses a food that is coloured with annatto extracts. In practice this is extremely unlikely, since annatto is associated only with certain product/flavour combinations.