Blue colour, naturally present in the shrub Indigofera tinctoria , though commercially it is produced synthetically.
Function & characteristics:
Blue food colour. Very soluble in water.
Up to 5 mg/kg body weight.
Side effects rarely occur in the concentrations used in foods. Rare allergic reactions have been described, due to coupling of the colour to (body) proteins. It can also function as a histamine liberator.
None; E132 can be consumed by all religious groups, vegans and vegetarians.
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