Table 2 Compar ison of isoflavone contents in the unfermented and fermented raw and HPSs sprouting
| Contents (μg/g) | Raw soybean | Sprouting length (cm) |
| 0 | 1 | 2 | 4 |
| UFHPS1) | FHPS | UFSHPS | FSHPS | UFSHPS | FSHPS | UFSHPS | FSHPS | UFSHPS | FSHPS |
| β-glycosidases | | | | | | | | | | |
| Daidzin | 340.49±13.622)c3) | 33.41±1.34e | 364.70±15.59c | 107.24±5.36d | 341.82±17.09c | 22.51±1.13f | 410.77±20.54d | 20.57±1.03f | 468.46±23.42a | 24.19±1.21f |
| Glycitin | 149.68±5.99b | 41.73±1.67e | 151.88±6.08b | 78.81±3.94d | 179.76±8.99a | 28.50±1.43f | 179.05±8.95a | 17.03±0.85g | 122.67±6.13c | 25.27±1.26f |
| Genistin | 362.43±15.50d | 13.83±0.55f | 397.89±15.92c | 33.76±1.69e | 388.07±19.40c | 2.35±0.12g | 409.08±20.45b | 0.56±0.03h | 471.52±23.58a | 4.49±0.22f |
| Total | 852.60±34.10d | 88.97±3.56f | 914.47±36.58c | 219.81±10.99e | 909.65±45.48c | 53.36±2.67g | 998.90±49.95b | 38.16±1.91h | 1,062.65±53.13a | 53.95±2.70g |
| Malonyl-β-glycosidases | | | | | | | | | |
| Daidzin | 52.89±3.17a | 44.71±2.68b | 15.12±0.91d | 4.15±0.91e | 28.54±0.25c | 15.51±0.78d | 21.99±1.10c | 6.73±0.34e | 23.25±1.16c | 12.09±0.60d |
| Glycitin | 15.40±0.92b | 14.49±0.87b | 11.03±0.66b | 10.90±0.66c | 16.81±0.65a | 18.63±0.93a | 13.19±0.66b | 9.74±0.49c | 14.78±0.74b | 12.76±0.64b |
| Genistin | 72.70±4.36a | 64.28±3.86b | 20.09±1.21f | 18.12±1.21g | 37.37±1.09e | 20.08±1.00f | 46.25±2.31d | 29.43±1.47f | 55.86±2.79c | 28.94±1.45f |
| Total | 140.99±8.46a | 123.48±7.41b | 46.24±7.41f | 33.17±2.77g | 82.72±1.99d | 54.22±2.71e | 81.43±4.07d | 45.90±2.30f | 93.89±4.69c | 53.79±2.69e |
| Acetyl-β-glycosidases | | | | | | | | | |
| Daidzin | tr4) | tr | ND5) | ND | ND | ND | ND | ND | ND | ND |
| Glycitin | 5.36±0.27a | 4.80±0.24b | 6.18±0.31a | 5.60±0.28a | 1.39±0.07c | 1.32±0.05c | 2.47±0.12c | 1.79±0.09c | 1.77±0.08c | 1.90±0.10c |
| Genistin | 2.68±0.13b | 2.40±0.12b | 3.09±0.15a | 2.80±0.14b | 0.69±0.03d | 0.66±0.03d | 1.23±0.06c | 0.89±0.04d | 0.88±0.04d | 0.95±0.05d |
| Total | 8.04±0.40b | 7.20±0.36c | 9.27±0.46a | 8.40±0.42b | 2.08±0.10e | 1.98±0.10e | 3.70±0.19d | 2.68±0.13e | 2.65±0.13e | 2.85±0.14e |
| Aglycones | | | | | | | | | | |
| Daidzein | 19.00±1.14g | 181.83±10.91c | 8.99±0.54h | 138.55±8.31d | 26.05±1.56f | 186.08±11.16c | 59.71±3.58e | 243.78±14.63b | 53.07±3.18e | 277.71±16.66a |
| Glycitein | 6.58±0.39e | 36.98±2.22c | 38.25±2.30c | 30.05±1.80c | 12.24±0.73d | 46.01±2.76b | 19.37±1.16d | 62.00±3.72a | 16.24±0.97d | 48.34±2.90b |
| Genistein | 14.80±0.89d | 131.53±7.89b | 6.83±0.41e | 120.55±7.23c | 10.00±0.60d | 129.52±7.77c | 16.04±0.96d | 139.27±8.36b | 11.49±0.69d | 165.20±9.91a |
| Total | 40.38±2.42h | 350.34±21.02c | 54.07±3.24g | 289.15±17.35d | 48.29±2.90h | 361.61±21.70c | 95.12±5.71e | 445.05±26.70b | 80.80±4.85f | 491.25±29.48a |
| Isoflavone totals | 1,042.01±62.52c | 569.99±34.20e | 1,024.05±61.44c | 550.03±33.00e | 1,042.74±62.56c | 471.17±28.27g | 1,179.15±70.75b | 531.79±31.91f | 1,239.99±74.40a | 601.84±36.11d |
Abbreviation: UFHSP, unfermented high-protein soybean; FHSP, fermented high-protein soybean; UFSHPS, unfermented steam high-protein soybean; and FSHPS, fermented steam high-protein soybean.
All values are presented as the mean±SD of triplicate determination.
All values within a column with different superscript letters are significantly different from each other at p<0.05 by Duncan’s multiple range test.
tr: trace (< 0.002 μg/g).
ND, not detected.