FOOD SCIENCE ›› 2003, Vol. 24 ›› Issue (11): 121-123.

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Protective Effects of Soybean Isofalvones and Soy-Saponins on Oxidation of Lipoproteins

 QUAN  Ji-Shu, YIN  Xue-Zhe, SHEN  Ming-Hua, ZHANG  Shuai   

  1. 1.Department of Biochemistry, Yanbian University College of Medicine;2.Department of Biochemisty,Yanbian University College of Medicine
  • Online:2003-11-15 Published:2011-12-13

Abstract: The very low density lipoprotein (VLDL), low density lipoprotein (LDL) and high density lipoprotein (HDL) wereisolated from fasting plasma of 14 healthy subjects by sequential ultracentrifugation before and after the intake of soybeanphytochemical extracts containing isoflavones and soy-saponins (SPE). Then the level of lipid peroxidation and the susceptibilitiesof lipoproteins to oxidation were investigated. The results showed that lipid peroxides of VLDL, LDL and HDL decreasedsignificantly after SPE intake; and modification of LDL oxidation in vitro caused curves prolonged noticeably, indicating a reducedsusceptibility of LDL to oxidation. It suggested that SPE, which could increase the plasma antioxidant capacity and promoteresistance to LDL oxidation in human, might be useful in prevention and treatment of cardiovascular diseases.

Key words: isoflavones, soyasaponins, lipid peroxides, oxidative susceptibility, lipoproteins