Pueraria lobata Root Identity & Plant Part
The botanical entity is Pueraria lobata (Willd.) Ohwi, a climbing vine of the legume family, Fabaceae, whose large tuberous roots store starch. The part used is the root, which is dug, sliced and dried before extraction. Flowers, leaves and the vine are not added to this kudzu extract.
Two relatives are easy to confuse with it. Pueraria mirifica is a Southeast Asian species with a different chemistry, and Pueraria thomsonii is sold alongside P. lobata in some pharmacopoeias. The root contains isoflavones, notably the C-glycoside puerarin together with daidzin and daidzein, and a substantial starch fraction that thickens the water extract as it concentrates.












