不同生长期油松针叶中倍半萜类化合物分布特征研究

利用气相色谱-质谱联用技术对现代活体不同生长期(2个月、14个月、26个月)油松松针中提取的有机组分及其分布特征进行了系统分析和研究，检测出丰富的生物标志化合物分子，包括正构烷烃、倍半萜类系列化合物等。通过特征离子碎片和文献对比鉴定，从松针叶片中检测出15种倍半萜类化合物。从生长初期（2个月）至枯萎过程中（14个月、26个月）倍半萜类化合物均有检出并且化合物的种类没有发生变化来看，该类化合物的形成主要是松针叶片在生长过程中的自身产物。随着生长期的增加，松针倍半萜类化合物相对于正构烷烃丰度有明显减少的趋势，而且结果显示，单环芳构化的倍半萜烯类化合物较不饱和二环烯烃倍半萜更易于降解。实验还记录了植物叶子生长过程中环境条件变化的相关信息。

The Distribution of Sesquiterpenes in Pine Needles During Different Growing Periods

The characteristics of biomarkers extracted from needles of the modern living pine with different growing periods were systematically analyzed by GC/MS.Abundant biomarkers were recognized,such as n-alkanes,sesquiterpenes.15 sesquiterpenes were detected in the pine needles through the characteristic ion fragmentations.From the initial growth(2 months) to wilting(14 months,26 months),all the sesquiterpenes were detected,and the category did not make any change.The result shows that this kind of compounds are ...