Table 1.

Antioxidant effects of 10-shogaol.

Samples	DPPH. Scavenging (%)	Metal Chelating (%)	Reducing Power (100 μM, OD700)
10-Shogaol	34.54 ± 0.02	<10.00	0.60 ± 0.02
Vitamin C a	90.02 ± 0.40	-	-
EDTA b	-	94.78 ± 0.60	-
BHA c	-	-	0.98 ± 0.11

^aVitamin C was used as a positive control on DPPH assay;

^bEDTA was used as a positive control on metal chelating ability at 100 μM;

^cBHA was used as a positive control on reducing power at 100 μM, and so did testing samples;

-: no testing.