Towards the Development of Effective Antioxidants-The Molecular Structure and Properties-Part 2

Area of Science:

• Biochemistry and Molecular Biology
• Materials Science
• Pharmacology

Background:

• Antioxidant research has shifted towards a mechanism-driven approach targeting the molecular "redox switch".
• Understanding radical scavenging pathways (HAT, SET, SPLET) is crucial for antioxidant development.

Purpose of the Study:

• To synthesize critical advances in antioxidant science since 2021.
• To elucidate the role of polyphenolic architecture and electronic descriptors in antioxidant activity.
• To explore the impact of metal coordination on antioxidant stability and pro-oxidant transitions.

Main Methods:

• Computational modeling (DFT, QSAR) and advanced synchrotron methodologies (XAS, STXM, SR-FTIR, SAXS).
• Evaluation of radical scavenging mechanisms (HAT, SET, SPLET).
• Analysis of metal coordination effects on antioxidant behavior.

Main Results:

• Polyphenolic architecture and electronic properties (bond dissociation enthalpy, ionization potential) govern radical scavenging.
• Metal coordination can enhance stability or induce pro-oxidant effects.
• Integration of computational and experimental methods validates antioxidant behavior and maps oxidative stress.

Conclusions:

• Fundamental physicochemical insights enable the rational design of antioxidant drugs and dietary supplements.
• Advanced formulation engineering, including nanocarriers and metal-phenolic networks, improves therapeutic delivery.
• This research provides a basis for developing effective antioxidant strategies in medicine.