Abstract:
<p align="justify"> The purpose of this investigation was the identification, quantification, and determination of the antioxidant activity of flavonoids of soybean. Examination of nine cultivars was carried out. All of them had the same stage of maturity and were grown on the same soil. The results showed the presence of genistein, genistein, daidzein, daidzin, naringenin, kaempferol, formonometin, and biochanin A in all cultivars. In terms of antioxidant activity, the best results were obtained with genistein and genistin. </p>