FOOD SCIENCE ›› 2007, Vol. 28 ›› Issue (9): 438-441.

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Identification and Determination of Black Bean Isoflavones by High Performance Liquid Chromatography Coupled with Electrospray Ionization Mass Spectrum

 LI  Dan, MOU  Li, LI  Xiao-Lei, TAN  Ke   

  1. 1.Jilin Key Laboratory of Agricultural Products Processing,Changchun University,Changchun 130022,China;2.National Research and Development Center for Soybean Processing Technology,Changchun 130022,China
  • Online:2007-09-15 Published:2011-11-22

Abstract: Mobile phases of 100% methanol/water/formic acid from 20:80:0.1 to 80:20:0.1 respectively in 30 min were used to elute black bean isoflavones at 0.8 ml/min,extracted by 70% ethanol from mature black bean seeds,in a C18 column with a high performance liquid chromatography(HPLC)system coupled with diode array detector(DAD)and mass spectrum(MS).Daidzin,acetyl genistin,genistin,malonyl daidzin,malonyl glycitin and malonyl genistin are identified as the main isoflavones with a total content 0.373%.Black bean is a good source of isoflavones for human health.

Key words: black bean, isoflavone, HPLC, MS, UV