广西地枫皮不同部位挥发油化学成分比较

目的:分析地枫皮叶、茎(去皮)及茎皮挥发油的化学成分。方法:采用水蒸气蒸馏法提取地枫皮不同部位挥发油,用气相色谱-质谱联用法(GC-MS)分析鉴定其化学成分。结果:地枫皮叶分离出118个色谱峰,共鉴定52个化合物,占挥发油总量的98.02%;其茎(去皮)提取的挥发油中共分离出63个色谱峰,共鉴定25个化合物,占挥发油总量的94.90%;其茎皮提取的挥发油中共分离出124个色谱峰,共鉴定68个化合物,占挥发油总量的92.10%。结论:地枫皮叶、茎(去皮)、茎皮3个部位挥发油主要成分均为异黄樟脑,其中以其茎(去皮)的含量最高,达到68.75%,但其他组分及含量相差较大。

Comparison of Chemical Constituents of Essential Oils from Different Parts of Illicium difengpi in Guangxi

Objective: To analyze the chemical constituents of essential oils from Illicium difengpi in Guangxi. Method: The essential oils were extracted by steam distillation,and then the constituents were separated and identified by GC-MS. Result: 118 compounds were isolated and 58 compounds were identified in the leaves that composed about 98.02% of the total essential oils;63 compounds were isolated and 25 compounds were identified in the stem stripped of the bark that composed about 94.90% of the total essential oils;And 124 compounds were isolated and 68 compounds were identified in the stem bark that composed about 92.10% of the total essential oils. Conclusion: There are some differences in the chemical constituents and contents in the above mentioned three parts,the principal chemical constituents of the essential oils are Isosafrole,especially containing in the stem stripped of the bark, reaching to 68.75%.