Sources of Isoflavones in the Diet

Isoflavones are found in soybeans, red clover, and the root of the kudzu vine Pueraria lobata, used for thousands of years in Chinese 

Wendy L Hall Kings College London, Diabetes Nutritional Sciences Division, School ofMedicine, Franklin Wilkins Building, 150 Stamford Street, 

Dietary isoflavones come from traditional soy foods (SF), modem soy products (a new source of isoflavones in Western populations, e g., soy buigers, soy yoghurts), and commonly consumed foodstuffs which contain soy flour or soy protein isolates (SPI). The isoflavone content of traditional SF, e g., miso, soy milk, tofu, and modem soy products vary 

FIGURE 23.1. Structures of common isoflavone algycones, daidzein, and genistein, in comparison with 17j3 estradiol. 

Variability in Isoflavone Contents Due to Growing Conditions and Food Processing 

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