(3R)-3-hydroxy-10'-apo-beta-carotenal + (3R)-hydroxy-beta-ionone => all-trans-zeaxanthin + O2
(3r)-3-hydroxy-10'-apo-beta-carotenal + (3r)-hydroxy-beta-ionone => all-trans-zeaxanthin + o2
(3R)-3-hydroxy-10'-apo-beta-carotenal + (3R)-hydroxy-beta-ionone => all-trans-zeaxanthin + O2
(3r)-3-hydroxy-10'-apo-beta-carotenal + (3r)-hydroxy-beta-ionone => all-trans-zeaxanthin + o2