Table 2 Variation of individual and total isoflavone contents in black soybeans of different seed weight.
Isoflavone class | Individual isoflavone | Values (mg/g) | CV (%) | LSD(0.05) | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Small seeds (N = 6) | Medium seeds (N = 6) | Large seeds (N = 12) | Cheongja 2 | ||||||||||
Max | Min | Mean | Max | Min | Mean | Max | Min | Mean | |||||
Aglycones | Daidzein | 0.138 | 0.000 | 0.128 | 0.117 | 0.000 | 0.116 | 0.131 | 0.000 | 0.121 | 0.128 | 5.93 | 0.49 |
Glycitein | 0.156a | 0.000 | 0.156 | 0.154a | 0.000 | 0.154 | nd | nd | nd | nd | 86.61 | 1.06 | |
Genistein | 0.136 | 0.123 | 0.127 | 0.130 | 0.123 | 0.126 | 0.133 | 0.124 | 0.128 | 0.131 | 2.59 | 0.29 | |
Total | 0.397 | 0.123 | 0.195 | 0.393 | 0.123 | 0.190 | 0.264 | 0.127 | 0.209 | 0.259 | 41.48 | 0.57 | |
β-glycosides | Daidzin | 0.323 | 0.068 | 0.143 | 0.088 | 0.022 | 0.054 | 0.353 | 0.043 | 0.179 | 0.170 | 65.81 | 1.34 |
Glycitin | 0.195 | 0.000 | 0.129 | 0.151 | 0.075 | 0.100 | 0.136 | 0.068 | 0.089 | 0.097 | 32.32 | 0.56 | |
Genistin | 0.289 | 0.160 | 0.224 | 0.275 | 0.152 | 0.209 | 0.522 | 0.143 | 0.293 | 0.285 | 34.74 | 1.41 | |
Total | 0.808 | 0.291 | 0.475 | 0.472 | 0.248 | 0.364 | 0.941 | 0.26 | 0.561 | 0.552 | 37.18 | 3.02 | |
Acetylglycosides | Acetyldaidzin | 0.150 | 0.000 | 0.133 | nd | nd | nd | 0.128a | 0.000 | 0.128 | nd | 68.14 | 1.43 |
Acetylglycitin | 0.113a | 0.000 | 0.113 | nd | nd | nd | nd | nd | nd | nd | – | – | |
Acetylgenistin | 0.096 | 0.000 | 0.094 | 0.096 | 0.000 | 0.093 | 0.108 | 0.000 | 0.096 | 0.096 | 5.07 | 0.38 | |
Total | 0.321 | 0.000 | 0.189 | 0.096 | 0.000 | 0.093 | 0.222 | 0.000 | 0.112 | 0.096 | 55.19 | 0.49 | |
Malonylglycosides | Malonyldaidzin | 1.031 | 0.534 | 0.675 | 0.534 | 0.45 | 0.487 | 1.021 | 0.525 | 0.689 | 0.667 | 24.30 | 7.12 |
Malonylglycitin | 0.418 | 0.000 | 0.391 | nd | nd | nd | 0.639 | 0.000 | 0.385 | nd | 48.30 | 5.23 | |
Malonylgenistin | 2.009 | 1.269 | 1.782 | 1.937 | 0.993 | 1.638 | 3.245 | 1.468 | 2.113 | 2.126 | 22.13 | 23.72 | |
Total | 2.877 | 2.221 | 2.588 | 2.471 | 1.443 | 2.125 | 4.649 | 2.319 | 3.06 | 2.793 | 22.69 | 30.85 | |
Total isoflavone content (TIC) | 4.203 | 2.734 | 3.384 | 3.292 | 2.11 | 2.725 | 5.777 | 2.825 | 3.905 | 3.701 | 23.06 | 32.51 |