FOOD SCIENCE ›› 2007, Vol. 28 ›› Issue (12): 466-469.

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Exploration to Hypoglycemic Mechanism of Extracts from Sweet Potato Stem and Leaf

 ZHANG  Yu, GAO  Yin-Yu, ZHANG  Xi-Bin   

  1. 1.State Key Laboratory of Food Science and Technology,Nanchang University, Nanchang 330047, China; 2.College of Biology and Food Engineering, Dalian Polytechnic University, Dalian 116034, China; 3.Engineering Research Center of Biomass Conversion, Ministry of Education, Nanchang 330047, China
  • Online:2007-12-15 Published:2011-11-22

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Abstract: The Hypoglycemic effects and inhibition on α-glucosidase of polysaccharides and flavonoids extracts from two varieties of sweet potato stem and leaf are studied in this paper. The results showed that the polysaccharides and flavonoids extracts from sweet potato stem and leaf have significantly hypoglycemic effect on experimental diabetic mice. Also, they can inhibit α-glucosidase, but they are all weaker than acarbose. The inhibition ratio of flavonoids extracts obviously presents dose-effect relationship, while the polysaccharides extracts is opposite. The inhibition and hypoglycemic effect of polysaccharides and flavonoids extracts from Xushu 18 is better compared with Dadi I’ respectively.

Key words: sweet potato stem and leaf； polysaccharides extracts； flavonoids extracts； hypoglycemic effects； &alpha, -glucosidase；