大叶含笑花精油的化学成分研究

大叶含笑为我国的珍贵稀有树种,是一种有开发价值的天然香料资源。大叶含笑鲜花经用水蒸汽蒸馏得到一种浅黄棕色精油,得率为0.093％。本文用经典方法测定了该挥发油的理化性质,并用毛细管气相色谱、红外光谱,核磁共振波谱和色谱-质谱-计算机联用技术等对该挥发油进行了系统的成分分析.在分出的56个色谱峰中,共鉴定出49个化合物,占精油总量的97.8％。其主要化学成分是β-石竹烯(20.395％)、顺罗勒烯(14.154％)、β-蒎烯(10.888％)、月桂烯(6.743％)以及乙酸萜品酯、橙花叔醇、金合欢醇、愈创木醇、香柠檬脑等。本研究为合理开发这一资源提供了科学评价和依据。

Chemical constituents of the essential oil from flower of Michelia fallaxa Dandy were compared with authentic samples on GC and analyzed by IR, NMR, GC/MS/DS technique. Among the 56 constituents separated, 49 components, which make up 97.8% of the total oil, were identified. The major components are P-caryophyllene (20.395%), cis-ocimene (14.154%), P-pinene(10.888%), myrcene(6.743%) and terpinyl acetate, nerolidol, farnesol, guaiol, bergaptene etc.