FOOD SCIENCE ›› 2007, Vol. 28 ›› Issue (6): 116-119.

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Determintion of Proportion of Fermented Soy Sauce Added in Blended Soy Sauce

 JIANG  Yong, NI  Yong-Nian, ZHU  Hui-Fang   

  1. 1.Nanchang University, Nanchang 330047, China; 2.Nanchang Center for Disease Control and Prevention, Nanchang 330006, China
  • Online:2007-06-15 Published:2011-12-31

Abstract: A method has been developed for the determination of levulinic acid in soy sauce by liquid chromatography, and the formula calculating the content of fermented soy sauce in the blended soy sauce was given. Two methods of liquid chromatography were compared. The ion exchange column method was better than the C18 column method in every aspect including the assay range and recovery and sample preparation. The content of fermented soy sauce in blended soy sauce was analyzed for some commercial products.

Key words: liquid chromatography, levulinic acid, blended soy sauce, fermented soy sauce, proportion