Table 5. DPPH radical scavenging activity and ABTS radical scavenging activity of ginger and ginger pomace after hot-air drying and freeze-drying

Treatment1)	DPPH radical scavenging activity (%)	ABTS radical scavenging activity (%)
FGHAD	60.60±1.71d2)	89.6±0.16d
FGFRD	70.84±0.97c	93.3±0.25c
GPHAD	72.26±0.49b	95.4±0.05b
GPFRD	77.88±0.46a	95.5±0.10a

FGHAD, fresh ginger hot-air dried (50°C, 8 h); FGFRD, fresh ginger freeze-dried; GPHAD, ginger pomace hot-air dried; GPFRD, ginger pomace freeze-dried.
All values are mean±SD (n=3).
Means with different superscript letters (^a-d) in the same column are significantly different at p<0.05 by Duncan’s multiple range test.