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Table 3 Individual and mean pharmacokinetic parameters of genistein following a single dose of orally administered soy beverage (B) and soy extract capsules (C).

From: Pharmacokinetics of isoflavones, daidzein and genistein, after ingestion of soy beverage compared with soy extract capsules in postmenopausal Thai women

Subj No.

Cmax (ng/ml)

Cmax/Dose1

AUC0–32 (ng.h/ml)

AUC0–32/Dose1

AUC0- (ng.h/ml)

AUC0-/Dose1

Tmax (h)

t1/2 (h)

 

B

C

B

C

B

C

B

C

B

C

B

C

B

C

B

C

1

90.41

151.49

8.60

6.71

954.82

1950.40

90.85

86.42

1040.69

2248.09

99.02

99.61

6

6

8.46

9.92

2

68.08

124.90

6.48

5.53

693.31

1821.17

65.97

80.69

739.89

1941.50

70.40

86.02

1

8

7.62

7.42

3

149.53

301.34

14.23

13.35

1801.34

4392.34

171.39

194.61

1989.66

5048.92

189.31

223.70

8

8

8.25

9.37

4

212.94

516.77

20.26

22.90

1979.53

5541.88

188.35

245.54

2140.25

6175.55

203.64

273.62

6

6

8.10

8.93

5

96.95

220.38

9.22

9.76

1281.58

2478.42

121.94

109.81

1423.11

3072.33

135.41

136.12

8

10

9.73

12.40

6

96.57

301.62

9.19

13.36

1277.75

2776.28

121.57

123.01

1483.87

2972.50

141.19

131.70

10

6

10.10

7.74

7

223.77

371.31

21.29

16.45

3184.25

5260.83

302.97

233.09

4022.02

6003.94

382.69

266.01

4

8

12.60

9.58

8

110.60

193.01

10.52

8.55

948.75

2217.44

90.27

98.25

998.31

2370.24

94.99

105.02

6

6

5.07

8.41

9

54.86

183.88

5.22

8.15

425.80

1481.47

40.51

65.64

527.69

1500.60

50.21

66.49

4

6

4.41

4.80

10

69.95

214.54

6.66

9.51

773.90

1856.73

73.63

82.27

789.07

1940.05

75.08

85.96

6

6

5.34

6.63

11

105.13

217.57

10.00

9.64

1128.81

3121.71

107.40

138.31

1177.74

3208.73

112.06

142.17

6

8

6.32

5.27

12

117.61

345.31

11.19

15.30

871.60

2591.36

82.93

114.81

914.46

2631.99

87.01

116.61

4

6

5.35

5.05

Mean

116.37

261.84ND

11.07

11.60

1276.79

2957.50ND

121.48

131.04

1437.23

3259.54ND

136.75

144.42

5.75

7.00

7.61

7.96

SD

53.80

110.68

5.12

4.90

746.04

1372.13

70.98

60.79

949.02

1599.34

90.30

70.86

2.34

1.35

2.44

2.28

  1. 1Pharmacokinetic parameters adjusted for oral administered dose. ND = statistical analysis was not performed due to differences in oral administered doses between both preparations.