Table 4. Total polyphenol and total flavonoid contents of ginger and ginger pomace by hot-air drying and freeze-drying

Treatment¹⁾	Total phenol (mg/100 mL)	Total flavonoid (mg/100 mL)
FGHAD	103.88±1.77^b2)	23.15±3.43^b
FGFRD	108.68±0.49^a	27.53±0.46^a
GPHAD	76.95±0.79^d	20.23±0.20^d
GPFRD	85.12±0.47^c	21.30±0.06^c

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.