Daidzin & Daidzein
Daidzein has two classifications, one as an isoflavone in the flavonoid family and another as a phytoestrogen. It is a plant-derived nonsteriodal compound. Daidzein is the aglycone (aglucon) of daidzin. Daidzein is found naturally as the glycoside daidzin and as the glycosides 6"-O-malonylgenistin and 6"-O-acetyldaidzin. Daidzein and its glycosides are mainly found in legumes, such as soybeans and chickpeas.
Daidzin and daidzein are also found in RP (Radix puerariae), an old Chinese herbal medicine made from the roots of Kudzu.
Daidzein is a solid substance that is insoluble in water whereas daidzin demonstrates some water solubility. When in nutritional supplements, Daidzein often appears as daidzin, in a beta-glucoside form.
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