Table 7. Functional component content of ginger extracts using different extraction volume
| Treatment | Working volume (L) | 2)TP (%) | TF (%) | | Total (%) | 6-G (%) | 8-G (%) | 10-G (%) | 6-S (%) | 8-S (%) | 10-S (%) |
| 1)Step I | 0.1 | 3)4.66±0.09a4) | 0.57±0.10 | | 5.30±0.49b | 1.74±0.02b | 0.89±0.09b | 1.34±0.12b | 0.73±0.10 | 0.43±0.10 | 0.17±0.06 |
| 1 | 4.57±0.04a | 0.64±0.06 | 6.30±0.16a | 2.37±0.02a | 1.05±0.04a | 1.60±0.04a | 0.78±0.05 | 0.36±0.02 | 0.14±0.01 |
| 35 | 3.41±0.01b | 0.49±0.04 | 5.49±0.04b | 1.73±0.00b | 0.91±0.02b | 1.47±0.00ab | 0.72±0.01 | 0.44±0.02 | 0.21±0.02 |
| F-value | 418.35***5) | NS | | 9.61* | 1,395.81*** | 7.13* | 8.45* | NS | NS | NS |
| Step II | 0.1 | 0.73±0.08b | 0.07±0.01b | | 0.03±0.00c | 0.03±0.00c | 0.00±0.00 | 0.00±0.00c | 0.00±0.00b | - | - |
| 1 | 0.75±0.06b | 0.10±0.02a | 0.10±0.00b | 0.09±0.00b | 0.00±0.00 | 0.01±0.00b | 0.00±0.00b | - | 0.00±0.00 |
| 35 | 1.04±0.02a | 0.05±0.01b | 0.89±0.01a | 0.62±0.00a | 0.13±0.00 | 0.11±0.00a | 0.02±0.00a | - | 0.01±0.00 |
| F-value | 25.01** | 15.91** | | 20,436.33*** | 28,081.00*** | NS | 1,027.00*** | 25.00** | - | NS |
1)Abbreviations are the same as in Table 6.
2)TP, total polyphenol; TF, total flavonoids; Total, sum of the 6, 8, 10 gingerol and 6, 8, 10 shogaol; 6-G, 6-gingerol; 8-G, 8-gingerol; 10-G, 10-gingerol; 6-S, 6-shogaol; 8-S, 8-shogaol; 10-S, 10-shogaol.
3)All values are mean±SD (n=3).
4)a-cMeans with different small letters in the same column differ significantly by Duncan's multiple range test (p<0.05).
5)*, p<0.05; **, p<0.01; ***, p<0.001; NS, not significant.