The E161 group are Xanthophylls, (from the Greek, Xanthos - yellow). They are yellow pigments, although E161g is more orange, and related to carotene. Extracted using the solvent hexane they normally contain other source plant material.

Cryptoaxanthin is also found in, amongst other things, egg yolk and orange peel.

It is not presently commercially available but is obviously eaten as part of a normal diet.