Table 1.
Types of Method | Adopted Test Methods | Method Summary | Ref. | |
---|---|---|---|---|
Assay of non-enzymatic antioxidant compounds | Total phenolic content | Folin Ciocalteu method | [15] | |
Total flavonoid content | Colorimetric assay based on intensity of colour change of the mixture | [16,17] | ||
Total flavonol content | ||||
In-vitro assay | Electron Transfer (ET) based assay | Superoxide radical scavenging assay | Measurement of reducing capacity of antioxidant (αH) in sample based on redox reaction (indicated by colour change) in presence of free radicals (R•) R• + αH + H2O RH + α• + H2O |
[3,18,19,20] |
DPPH• scavenging assay | ||||
TBARS assay | ||||
Hydrogen Atom Transfer (HAT) based assay | Hydroxyl radical scavenging assay | Quantitation of hydrogen atom donating capacity of antioxidant present in sample based on proton-coupled reaction (indicated by colour change) in presence of free radicals R• + αH R- + αH+• |
[3,21,22,23] | |
Hydrogen peroxide scavenging assay | ||||
ABTS+• scavenging assay | ||||
Others | Anti-hemolytic activity assay | Measurement of inhibiting capacity of RBCs hemolysis by ROS inducing oxidative stress | [24] | |
In-vivo assay | CAT activity assay | Quantifying the activity of enzymes responsible for suppressing ROS generation such as- catalase (CAT) and superoxide dismutase (SOD) in animal model treated with sample | [25,26] | |
SOD activity assay | ||||
LPO activity assay | Measurement of the effect of sample on lipid peroxidation (auto-oxidation) and generation of malondialdehyde (MDA) in mice model | [19] | ||
Estimation of protein | Assessment of total protein in oxidative stressed animal model treated with sample containing antioxidant | [27] |