2D Lipid Membrane Canvas
Drag ROS directly into membrane layer
Intact PUFA (LH)
ROS Injector (•OH)
Peroxyl Radical (LOO•)
α-Tocopherol (Vit E)
Membrane Structural Integrity & Kinetics
Membrane Integrity
100%
Lipid Radicals [L•/LOO•]
0
Hydroperoxides [LOOH]
0
Quenched Radicals
0
Reaction Parameters
Medium
High (Unsaturated)
Moderate
50%
Chemical Kinetics Summary
1. Initiation: Radical •OH abstracts hydrogen from PUFA double bonds creating lipid radicals (L•).
2. Propagation: Rapid O₂ reaction creates peroxyl radicals (LOO•) that attack adjacent lipids in a continuous chain reaction.
3. Termination: Vitamin E donates phenolic H to quench LOO• into LOOH, breaking the propagation cascade.