文献类型：期刊文献

英文题名：Inhibitory effects of Citrus flavonoids on starch digestion and antihyperglycemic effects in HepG2 cells

作者：Shen, Wei[1]; Xu, Ying[1]; Lu, Yan-Hua[1]

机构：[1] State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China

年份：2012

卷号：60

期号：38

起止页码：9609

外文期刊名：Journal of Agricultural and Food Chemistry

收录：EI(收录号：20124015491319)

语种：英文

外文关键词：Functional food - Flavonoids - Amylases - Starch - Catalysis - Cyclodextrins

摘要：Flavonoids are a class of important bioactive natural products and are being extensively used in functional foods. In the present study, the effects of four Citrus flavonoids (i.e., hesperidin, naringin, neohesperidin, and nobiletin) on amylase-catalyzed starch digestion, major digestive enzyme activities (e.g., pancreatic α-amylase and α-glucosidase), and glucose use in HepG2 cells were investigated. The results showed that all of the tested Citrus flavonoids significantly inhibited amylase-catalyzed starch digestion. Moreover, naringin and neohesperidin mainly inhibited amylose digestion, whereas hesperidin and nobiletin inhibited both amylose and amylopectin digestion. However, these flavonoids showed weak inhibitory activities against digestive enzymes. Furthermore, glucose consumption, glycogen concentration, and glucokinase activity were significantly elevated, and glucose-6-phosphatase activity was markedly decreased by Citrus flavonoids. These results demonstrate that Citrus flavonoids play important roles in preventing the progression of hyperglycemia, partly by binding to starch, increasing hepatic glycolysis and the glycogen concentration, and lowering hepatic gluconeogenesis. This work suggests that Citrus flavonoids might be potentially used for the prevention of postprandial hyperglycemia. ? 2012 American Chemical Society.