Table 1. Yields, moisture content, and Hunter’s color value of 70% ethanol extracts of grape fruit stem with different drying methods
| Samples1) | Yields(%, dry basis) | Hunter’s color value |
| L*(lightness) | a*(redness) | b*(yellowness) | Ho(hue angle) |
| GFSF | 59.17±1.252)NS3) | 53.37±0.98a4) | 5.77±0.14c | 8.60±0.17c | 68.31±0.63a |
| GFSI | 57.93±1.53 | 49.25±0.99c | 7.02±0.22a | 10.61±0.33b | 62.77±0.25c |
| GFSH | 58.57±1.19 | 51.00±0.94bc | 6.50±0.27b | 11.42±0.19a | 66.37±0.76b |
| GFSS | 58.87±1.81 | 50.70±0.44b | 6.73±0.09ab | 11.55±0.11a | 63.37±0.06c |
1)Abbreviations: GFSF, ethanol extract of grape fruit stem with freeze drying; GFSI, ethanol extract of grape fruit stem with infrared drying; GFSH, ethanol extract of grape fruit stem with heat air drying; GFSS, ethanol extract of grape fruit stem with sun drying.
2)Values are means±SD of triplicate determinations.
3)NS, not significant.
4)Different superscripts within a column (a-c) indicate significant differences (p<0.05).