Dynamics of phytoestrogen, isoflavonoids, and its isolation from stems of Pueraria lobata (Willd.) Ohwi growing in Democratic People's Republic of Korea  Song-Chol Mun, Gwan-Sim Mun  Journal of Food and Drug Analysis  Volume 23, Issue 3, Pages 538-544 (September 2015) DOI: 10.1016/j.jfda.2015.04.003 Copyright © 2015 Terms and Conditions

Fig. 1 Structures of the main isoflavonoids in stems of Pueraria lobata: (A) daidzein; (B) genistin; (C) daidzin; (D) puerarin. Journal of Food and Drug Analysis 2015 23, 538-544DOI: (10.1016/j.jfda.2015.04.003) Copyright © 2015 Terms and Conditions

Fig. 2 HPLC chromatograms of isoflavonoids in (A) stems and (B) roots of Pueraria lobata; 1 = puerarin (11.7 minutes); 2 = daidzin (20.4 minutes); 3 = genistin (30.9 minutes); and 4 = daidzein (38.3 minutes). HPLC = high-performance liquid chromatography. Journal of Food and Drug Analysis 2015 23, 538-544DOI: (10.1016/j.jfda.2015.04.003) Copyright © 2015 Terms and Conditions