ICAR Research Data Repository for Knowledge Management

The antioxidant potency of freeze-dried aqueous extract of potato peel was investigated employing various established in vitro
systems, such as lipid peroxidation in rat liver homogenate, 1, 1-diphenyl-2-picrylhydrazyl (DPPH)/superoxide/hydroxyl radical
scavenging, reducing power, and iron ion chelation. Freeze-dried aqueous extract of potato peel powder (PPE) showed strong
inhibitory activity toward lipid peroxidation of rat liver homogenate induced by the FeCl₂–H₂O₂ system. Furthermore, PPE
exhibited a strong concentration-dependent inhibition of deoxyribose oxidation. PPE also showed a considerable antioxidant
activity in the DPPH radical assay system. The multiple antioxidant activity of PPE was evident as it showed strong reducing
power, superoxide scavenging ability and also ferrous ion chelating potency. The data obtained in the in vitro models clearly
establish the antioxidant potency of freeze-dried extract of potato peel. Considering that potato peels are discarded as waste and
not effectively utilized, these in vitro results suggest the possibility that potato peel waste could be effectively employed as an
ingredient in health or functional food, to alleviate oxidative stress. However, comprehensive studies need to be conducted to
ascertain the in vivo safety of such extracts in experimental animal models.