关键词: 气相色谱-质谱法, 巨桉叶, 挥发性化感物质

Abstract: Volatile allelopathic constituents are extracted by steam distillation from leaf of Eucalyptus grandis, and analyzed quantitatively by gas chromatography-mass spectrometry(GC-MS), and the relative content of the components is determined with area normalization method. The analysis results:leaf of E. grandis contains 26 volatile compounds; the main categories are monoterpenes and sesquiterpenes, relative total content is 85.32%, the amount of α-Pinene is the most component(38.72%), especially. The research indicates the main volatile allelopathics of leaf of E. grandis are α-Pinene, Spathulenol, α-Eudesmol and other terpenes, their allelopathy is worth further studying.

Key words: GC-MS, leaf of E. grandis, volatile allelopathic