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. 2020 Mar 27;9(4):282. doi: 10.3390/antiox9040282

Table 1.

Methods adopted for assessment of antioxidant activity of processed and unprocessed lupin flours.

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]