Methodological aspects about in vitro evaluation of antioxidant properties

Area of Science:

• Biochemistry
• Analytical Chemistry
• Pharmacology

Background:

• Accurate in vitro determination of antioxidant capacity is crucial for research and product development.
• Numerous methods exist, but their principles, applications, and limitations vary significantly.

Purpose of the Study:

• To critically review and compare commonly used in vitro methods for assessing antioxidant capacity.
• To outline the chemical principles, scope, advantages, and shortcomings of each assay.

Main Methods:

• Review of established in vitro antioxidant capacity assays.
• Discussion of methods based on biological oxidants (e.g., peroxyl radical, hydroxyl radical).
• Analysis of non-biological assays including TEAC, DPPH, FRAP, Folin-Ciocalteu, and electrochemical methods.

Main Results:

• Detailed explanation of the chemical principles underlying various antioxidant assays.
• Comparative analysis highlighting the strengths and weaknesses of each method.
• Identification of the scope of application for different antioxidant testing strategies.

Conclusions:

• No single method is universally applicable for all antioxidant capacity determinations.
• Understanding assay principles and limitations is essential for selecting appropriate methods.
• This review provides a critical guide for researchers in choosing and interpreting antioxidant assay results.