台琼海桐蒴果皮油及籽油的主要挥发性化学成分

采用GC-MS技术,对台琼海桐蒴果皮的水蒸气蒸馏油样,以及蒴果籽的索氏提取油样的甲酯化样品进行分析。样品中各化学成分的相对含量用面积归一化法确定。在实验条件下,果皮油样共分离出24个峰,鉴定了17个,占总峰面积的94.70%。其主要成分为柠檬烯(24.27%)、γ-榄香烯(8.30%)、β-榄香烯(17.13%)、α-榄香烯(16.02%)、长叶龙脑(15.52%)和α-松油醇(2.17%),α-石竹烯(1.88%)。果籽油的甲酯化样品共分离出16个峰,鉴定了12个,占总峰面积的96.69%,其主要成分为棕榈油酸(34.83%)、反油酸(26.63%)、14-甲基-十五烷酸(17.08%),十八烷酸(1.88%),十四烷酸(1.61%)。分析结果说明台琼海桐蒴果皮富含挥发性芳香油,而蒴果籽油含有多种脂肪酸。

Main chemical compositions with volatilityin peel essential oil and seed oil of Pittosporum pentandrumvar.formosanum capsule

The oil of capsule peel was obtained by steam distillation,and oil of capsule seeds by Soxhlet extraction fromPittosporum pentandrumvar.formosanum.At first,the main chemical compositions and their relative contents were identified and determined in peel oil and methyl-esterificated seed oil sample by using GC-MS and area normalization technology.24isolate peaks appeared in GC-MS spectrogram of the capsule peel oil sample.17peaks,94.70% in total peak area,had been identified.There were limonene(24.27%);γ-elemene(8.30%);β-elemene(17.13%);αelemene(16.02%);Longiborneol(15.52%);α-terpinol(2.17%) andα-caryophyllene(1.88%) mainly.16isolate peaks appeared in GC-MS spectrogram of the methyl-esterificated seed oil sample.12peaks,96.69%in total peak area,had been identified.There were palmitoleic acid(34.83%);elaidic acid(26.63%);14-methyl-pentadecanoic acid(17.08%);octadeca alkyl acid(1.88%) and tetradecanoic acid(1.61%) mainly.These results showed that capsule peels contained largely volatile essential oil and capsule seeds oil contained various fatty-acid.