the hplc method allows for the separation and quantification of norbixin and bixin as well as the other carotenoids such as beta-carotene , beta-apo-8'-carotenal and beta-apo-8'-carotenoic acid -- ethylester , which may also be found in varieties of cheese ( detection limit of norbixin and bixin : 0.2 mg/kg ) .
C0007271
carotenoids
C0053396
beta-carotene