FOOD SCIENCE ›› 2011, Vol. 32 ›› Issue (5 ): 108-110.doi: 10.7506/spkx1002-6630-201105024

• Basic Research • Previous Articles     Next Articles

Inhibitory Effect of Ethanol Extract from Propolis onα-Glucosidase

ZHANG Hong-cheng1,SUN Qing-shen2,WANG Guang-xin1,3,YOU Ying-jie2,DONG Jie1,*   

  1. 1. Bee Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100093, China;2. College of Life Science,
    Heilongjiang University, Harbin 150080, China;3. College of Food Science and Technology, Nanjing Agricultural University,
    Nanjing 210095, China
  • Received:2010-06-30 Revised:2011-02-14 Online:2011-03-15 Published:2011-03-03
  • Contact: ZHANG Hong-cheng E-mail:zzhc@sohu.com

Abstract: In order to explore the mechanism by which propolis controls postprandial blood glucose, the inhibitory effect of ethanol extract from propolis (EEP) on α-glucosidase was evaluated by using α-glucosidase inhibition model in this paper. Inhibitory kinetic parameters were determined by Lineweaver-Burk plot. The results indicated that the median inhibitory concentration (IC50) of EEP was (0.8260 ± 0.1754) mg/mL and the inhibition constant (KI) was (0.0265 ± 0.0060) mg/mL. Kinetic analysis showed that the inhibitory mechanism of EEP on α-glucosidase was a typical noncompetitive inhibition. Therefore, propolis seems to be a healthy food choice for the adjustment of blood glucose.

Key words: propolis, α-glucosidase, noncompetitive inhibition

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