Antioxidant Flavonol Compounds from the Marine Cordgrass Spartina anglica

作者：Sun Xue; Tang Jun; Hu Wei; Xu Nianjun^*

来源：Food Science and Technology Research, 2013, 19(6): 1093-1097.

• Spartina anglica
• antioxidant
• bioactivity-guided isolation
• flavonol

The marine cordgrass Spartina anglica has even been considered as an invasive plant in recent years. But their huge biomass was also useful bio-resource for various bioactive substances. In this paper, the ethanol extracts of S. anglica were screened for their antioxidant activities, and bioactivity-guided isolation by macroreticular resin column chromatography, polyamide column chromatography lead to a potent antioxidant fraction. Finally, with the help of HPLC and NMR techniques, three flavonol glycosides were identified as: 5,4'-dihydroxy-3'-methoxy-flavono1-3-O-glu cosyl-(1 -> 6)-glu cosy1-7-O-rh amno side (1), 5-hydroxy-3',4'-dimethoxy-flavonol-3-O-glucosyl-(1 -> 6)-glucosyl-7-O-rhamnoside (2), 5-hydroxy-3'methoxy-flavonol-3-O-glucosyl-(1 -> 6)-glucosyl-7-0-rhamnoside (3). Among them, compounds 1 and 3 showed potent antioxidant activities, and 2 and 3 were novel compounds. These compounds may contribute for the antioxidant activities of the Spartina extracts.

• 出版日期2013-11
• 单位宁波大学