利用頂空氣相層析法預測伽羅木醇型土肉桂葉子精油化學組成分

伽羅木醇型土肉桂(Cinnamomum osmophloeum ct. linalool)葉子精油主成分伽羅木醇(Linalool)含量很高，又有許多功效，非常具有應用價值。本研究旨在建立以少量葉子之揮發成分預測其精油主成分之方法，並探討伽羅木醇型土肉桂種子苗與扞插苗的化學組成分與其親代間的差異。試驗結果顯示，頂空氣相層析質譜法(HS-GC/MS)直接分析葉子揮發成分，與精油(EO)成分分析所得結果一致，2種方法具有高度相關性，亦得到預測主成分Linalool之關係式(EO = 0.7811 × HS + 21.525)。此外，不同世代扞插苗葉子的主成分並沒有差異，皆為Linalool (＞ 85%)；而種子苗的主成分除Linalool (43.8 – 69.4%)外，還有Camphor (22.2 – 38.2%)。本研究所建立之分析技術可作為快速監測伽羅木醇型土肉桂葉子精油組成分之工具，並提供未來栽植土肉桂之參考依據。

關鍵字

伽羅木醇型土肉桂；扞插苗；精油；頂空氣相層析質譜法；種子苗

並列摘要

Owing to high content of linalool, the essential oil of Cinnamomum osmophloeum ct. linalool leaf has many bioactivities, therefore its potential applications are expected. The aim of the present study is to establish a method which predict the major component in essential oils by using a little amount of volatiles emitted from leaves. The differences of chemical composition between seedlings, cutting saplings and their different generations are also dicussed. Result showed that the chemical composition analyzed using headspace gas chromatography (HS-GC/MS) was similar to that of essenatial oils (EO). These 2 methods, HS-GC/MS and EO, had highly positive correlation. The relative content of linalool could be predicted according to the formulae (EO = 0.7811 × HS + 21.525). In addition, linalool predominated in the volatiles (＞ 85%), and no significant difference of linalool content between different generations of cutting saplings was observed. However, the major components of seedlings were composed of camphor (22.2 – 38.2%) besides linalool (43.8 – 69.4%). The analysis technique established in the current study could be an appropriate tool for the rapid monitoring of composition of the EO of C. osmophloeum ct. linalool, and be a reference for plantation of C. osmophloeum ct. linalool.

並列關鍵字

Cinnamomum osmophloeum ct. linalool ； cutting sapling ； essential oil ； headspace gas chromatography ； seedling

國際替代計量

利用頂空氣相層析法預測伽羅木醇型土肉桂葉子精油化學組成分

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