inhibition). The extracts of two parts from geuk at 5 mg/mL have shown similar and/or higher activity than three
single bioactive compounds, significantly. For ABTS●+ radical scavenging activity, the rank order of extracts and
single bioactive compounds were similar to the DPPH results. In the antioxidant activity of major component, α-
tocopherol (93.75-95.41%) have shown the best activity, and followed by lycopene (89.21-93.11%) and β-
carotene (76.06-90.49%). Teow et al. (2007) reported that there is a poor correlation between β-carotene content
and the antioxidant activities. Β-Carotene content in the lipophilic extracts of geuk fruits correlated poorly with
ABTS and DPPH assays and these results are similar.