Table 3. Functional component content of ginger extracts as affected by pH adjustment
Treatment | 2)TP (%) | TF (%) | | Total (%) | 6-G (%) | 8-G (%) | 10-G (%) | 6-S (%) | 8-S (%) | 10-S (%) |
1)CON | 3)1.43±0.02c4) | 0.33±0.02c | | 0.57±0.06c | 0.45±0.05c | 0.03±0.00b | 0.00±0.00c | 0.05±0.00b | 0.04±0.01 | 0.01±0.00 |
A | 2.37±0.05a | 0.68±0.00a | | 1.53±0.05a | 1.22±0.03a | 0.09±0.00a | 0.03±0.01b | 0.06±0.00ab | 0.11±0.00 | 0.02±0.00 |
B | 1.52±0.01b | 0.37±0.01b | | 1.08±0.13b | 0.78±0.09b | 0.10±0.02a | 0.06±0.01a | 0.08±0.01a | 0.05±0.01 | 0.02±0.00 |
F-value | 890.94***5) | 911.55*** | | 84.34*** | 117.07*** | 28.79** | 42.00*** | 7.63* | NS | NS |
1)Abbreviations are the same as in Table 2.
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.