label: violaxanthin de-epoxidase activity
label_lc: violaxanthin de-epoxidase activity
description: "Catalysis of the reaction: violaxanthin + 2 ascorbate = zeaxanthin + 2 dehydroascorbate + 2 H2O; and antheraxanthin + ascorbate = zeaxanthin + dehydroascorbate + H2O."