Abstract
The antioxidative activity and synergistic effects toward mixed tocopherol (Toc) of phosphatidylcholine (PC), phosphatidylethanolamine (PE) and PC concentrated phospholipid (PC-70) prepared from soy phospholipid were investigated using an emulsifying system of refined fish oil/water=3/7 under the autoxidation condition at 30°C.
The antioxidative activity of each phospholipid increased along with the addition amount, and PC activity was the highest in phospholipids tested.
Synergistic effects toward Toc were remarkable with 20% phospholipid addition to the oil substrate, followed by 10%>5%>1%, and PE showed the excellent synergistic effect in any level added than those of corresponding PC and PC-70 levels.
The antioxidative activity of phospholipid was stronger in the presence of water-soluble radical initiator than in the oil-soluble radical initiator.
