Mineral and Phytochemical Profiles and Antioxidant Activity of Herbal Material from Two Temperate Astragalus Species
Table 2
Concentration of isoflavones (mg/100 g) in whole aerial part (WP) of plants harvested at the vegetative stage (VS) and fully flowering stage (FS) and the separate parts of fully flowering plants of A. glycyphyllos and A. cicer.
Isoflavone
Plant material
WP VS
WP FS
Stems
Leaves
Flowers
A. glycyphyllos
Formononetin
5.50 ± 0.6
6.14 ± 0.6
5.05 ± 0.5
2.20 ± 0.3
Biochanin A
8.81 ± 0.8
3.17 ± 0.4
2.50 ± 0.3
4.43 ± 0.5
2.09 ± 0.2
Daidzein
<LO
<LOQ
<LOQ
<LOQ
<LOQ
Genistein
2.23 ± 0.3
5.71 ± 0.6
7.29 ± 0.6
5.15 ± 0.5
4.83 ± 0.5
Sum
20.28
14.38
15.93
14.63
9.11
A. cicer
Formononetin
10.85 ± 0.8
4.17 ± 0.4
5.55 ± 0.5
3.91 ± 0.4
1.30 ± 0.2
Biochanin A
11.40 ± 0.8
2.82 ± 0.3
3.14 ± 0.4
4.01 ± 0.5
2.49 ± 0.3
Daidzein
<LOQ
<LOQ
<LOQ
<LOQ
<LOQ
Genistein
<LOQ
4.21 ± 0.4
4.08 ± 0.4
4.33 ± 0.4
1.95 ± 0.2
Sum
22.25
11.20
12.77
12.25
5.74
of repetitions ± standard deviation; LOQ: below the limit of quantification.
