广西小叶红叶藤挥发油化学成分及抗氧化性研究

采用气相色谱-质谱联用技术对小叶红叶藤挥发油的化学成分进行分析,并用DPPH·法、ABTS,+法和铁氰化钾还原法对其抗氧化能力进行研究.结果表明:从小叶红叶藤挥发油分离出221个色谱峰,共鉴定64个化合物,占挥发油总量的95.72％,主要成分为dl-薄荷酮(53.43％)、(E)-薄荷酮(14.20％)、5-甲基-2-...

Chemical constituents and antioxidant activity of essential oils from Rourea microphylla in Guangxi

The constituents of the essential oils of Rourea microphylla from Guangxi were separated and identified by GC-MS. The scavenging activities on DPPH· radical,ABTS·+radical and reducing power were detected by UV-Vis spectrophotometry. 221 compounds were isolated and 64 compounds were identified that composed about 95.72% of the total essential oils. The principal chemical constituents of the essential oils were dl-Menthone(53.43%),(E)-Menthone(14.20%),2-isopropyl-5-methyl-3-Cyclohexen-1-one(9.87%),β-Terpinene(8.16%),β-Pinene(1.54%),α-Pinene(1.18%),et al. These oils possessed good scavenging activities on both DPPH· and ABTS·+ radical,the scavenging rate reaching to 62.25% and 68.11%,respectively,but showed low activities on reducing power. All antioxidant activity showed a concentration-effect relationship.