Analysis of Soy Dietary Supplements Using NMR Spectroscopy
12 Apr 2013
In this application note three commercially available dietary supplements containing soybean extract we investigated using NMR spectroscopy. One dimensional 1H NMR analysis, requiring less than 3 minutes per sample, allowed absolute quantification of key flavonoid compounds. Structural verification of genistin, a major flavonoid component in soybeans, was accomplished by comparison to a standard sample. Other components were identified based on spectroscopic signatures and statistical analysis was performed.