Dehydrocurdione, a zedoary-derived sesquiterpene, induces heme oxygenase (HO)-1, an antioxidative enzyme, in RAW 264.7 macrophages. Dehydrocurdione interacts with Keap1, resulting in Nrf2 translocation followed by activation of the HO-1 E2 enhancer. Dehydrocurdione suppresses lipopolysaccharide-induced NO release, a marker of inflammation. Anti-inflammatory activity.

Pyridoxal 5′-phosphate the active form of vitamin B6 is a cofactor for many different enzymes involved in transamination reactions including mitochondrial cysteine desulfurase cystathionine γ-synthase various aminotransferases and a d-serine dehydratase.

Urolignoside shows antioxidant and radical scavenging activity.