Polyphenol-mediated free-radical scavenging

Polyphenol-mediated free-radical scavenging refers to the process by which polyphenols, naturally occurring compounds characterized by multiple phenolic groups, neutralize reactive oxygen species and free radicals through various chemical mechanisms, especially hydrogen atom and electron transfer. This antioxidant activity is based on the polyphenol structure, particularly the number and position of hydroxyl groups, and is associated with protective effects against oxidative damage in biological systems. Although important for health, this process is not a discrete molecular target but rather a mechanism shared by polyphenol compounds, commonly found in plant-derived foods such as fruits, vegetables, and teas[1][2][3][4][5]. Polyphenols themselves can interact with enzymes and cellular targets but, as described, “polyphenol-mediated free-radical scavenging” does not refer to a single identifiable molecule or receptor, nor is it a therapeutic target in the classical sense. This term captures a functional antioxidant mechanism rather than a protein or receptor that can be structurally and pharmacologically targeted.

Other names

Polyphenol antioxidant activityPolyphenol free radical scavengingPolyphenol radical neutralization

Hydrogen atom transfer (HAT), Single electron transfer (SET), Sequential proton loss electron transfer (SPLET), Metal ion chelation