Jagua (Genipin) Blue, INS 183

Jagua (genipin‐glycine) blue is obtained by water extraction of the ground pulp of the peeled, unripe fruits of Genipa americana L. and is the result of a reaction between genipin (iridoid present in the fruit) and externally added glycine. This reaction leads to the formation of a blue‐coloured polymer and minor colouring components.