Chemical Constituents and Antioxidant Activity of the Essential Oils from the Leaves of Callicarpa formosana Rolfe
LIN Chao-zhan,ZHU Chen-chen,ZHANG Cui-xian,ZHAO Zhong-xiang,HE Wen-jiang,LI Jin-kun,CHAI Ling,DENG Jie-wei,WEI Yu-long(College of Chinese Traditional Medicine,Guangzhou University of Chinese Medicine,Guangzhou 510006,China)
The compositions of the essential oil from the leaves of Callicarpa formosana Rolfe in Guangdong Province were analyzed by means of GC-MS technique,and 48 chemical constituents,accounting for 90.14% of total content were identified.The main components were(-)-spathulenol(20.23%),β-caryophyllene(17.22%),germacrene D(8.06%) and β-eudesmene(5.52%).Besides,some sesquiterpenes and their oxides,such as τ-elemene(4.18%),aristolene(3.78%),isoaromadendrene oxide(2.71%) and 4-terpineol(2.50%) had also relatively high contents.The tested oils at three concentrations displayed ability to scavenge the stable free radical DPPH and showed a concentration-effect relationship.
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