Table 2 Variation of individual and total isoflavone contents in black soybeans of different seed weight.

From: Isoflavones, anthocyanins, phenolic content, and antioxidant activities of black soybeans (Glycine max (L.) Merrill) as affected by 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

  1. aDetected only in one variety; nd not detected.