Table 1
Yields and color values of 70% ethanol extracts of grape seed prepared with different drying methods

Samples¹⁾	Yields (%,drybasis)	Color value
Samples¹⁾	Yields (%,drybasis)	L^*(Lightness)	a^*(Redness)	b^*(Yellowness)	H^° (Hueangle)
GSFD	4.53±0.48^c2)	50.22±0.88^b	7.34±0.23^c	9.84±0.20^a	56.90±0.61^a
GSIR	6.71±0.15^a	45.73±1.13^c	9.58±0.24^a	10.23±0.47^a	51.47±1.11^b
GSHD	6.91±0.10^a	54.25±0.70^a	7.60±0.03^c	10.35±0.06^a	57.20±0.20^a
GSSD	5.55±0.17^b	50.05±0.31^b	8.16±0.05^b	9.11±0.15^b	51.80±0.46^b

¹⁾Abbreviations: GSFD, ethanol extract of grape seed with freeze drying; GSIR, ethanol extract of grape seed with infrared drying; GSHD, ethanol extract of grape seed with heat air drying; GSSD, ethanol extract of grape seed with sun drying.
²⁾Values are means±SD of triplicate determinations. Different superscripts within a column indicate significant differences (p<0.05).