In Vitro Antioxidative Evaluation of 𝜶- and 𝜷-Carotene, Isolated from Crude Palm Oil

Table 1

Relative efficacy of each antioxidant assay for individual antioxidant concentration.

Concentrations (%)	Antioxidant assay
	DPPH; radical scavenging activity (%)	Reducing activity (Å)	Metal chelation (%)	ABTS radical scavenging activity (%)	Lipid peroxidation (%)	Superoxide radical scavenging activity (%)	Anti-denaturation assay (%)
0.001	+++++	+	+++++	−	+	+++++	+++++
0.005	++++	++	++++	−	++	++++	++++
0.01	+++	+++	+++	−	+++	+++	+++
0.05	++	++++	++	−	++++	++	++
0.1	+	+++++	+	+	+++++	+	+