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《Chemistry and Industry of Forest Products》 2008-01
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Characterization and Antioxidant Activity of Flavonoid Extract from Leaves of Adinandra nitida Merr. ex Li

LIU Ben-guo1,2,ZHAN Yu3,NING Zheng-xiang1,GAO Jian-hua1,XU Ke-yong1(1.College of Light Industry and Food Science,South China University of Technology,Guangzhou 510640,China;2.School of Food Science,Henan Institute of Science and Technology,Xinxiang 453003,China;3.School of Chemistry and Chemical Engineering,Guangzhou University,Guangzhou 510091,China)  
In order to develop Adinandra nitida Merr.ex Li(a kind of particular plant in China),flavonoid extract from leaves of A.nitida(FE)was obtained by traditional solvent extraction.By high performance liquid chromatograph(HPLC)and tandem electrospray ionization mass spectrometry(ESI-MSn),the major flavonoid in leaves was identified as camellianin A,whose content in FE was as high as 51.19 %±1.13 %.The flavonoid extract showed high antioxidant activity by measuring abilities of scavenging DPPH radicals and hydroxyl radicals.It also exhibited strong reducing power.These results revealed that FE could be served as a new natural antioxidant.
【Fund】: 广东省科技计划支持项目(2005A20303002);; 广州市科技局项目(2006J1-C0251)
【CateGory Index】: R284;R285
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