ABSTRACT The fruits of Zanthoxylum armatum DC. were collected from different altitudes (1000–2000 m) and populations (wild and cultivated) from Salyan district, Nepal. The essential oil was extracted by Clevenger apparatus and the components were analyzed through GC-MS. The yield of essential oil obtained from hydro-distillation of fruits ranged from 2.72 to 7.6%. The maximum yield was 7.6% from wild fruits at 1600–1800 m altitude and the minimum was 2.72% from cultivated fruits at 1000–1200 m altitude. This was the highest recorded essential oil yield from Z. armatum fruits. A total of 13 volatile compounds were identified from the essential oil by GC-MS analysis. The major components were linalool, cinnamate (E)methyl, limonene, myrcene, sabinene and terpinen-4-ol, which were present in higher proportion in all the samples. Other components were identified in a very low proportion. The main component linalool occurred in the highest proportion (74.12%) from wild populations at 1600–1800 m altitude and the lowest (44.73%) was from cultivated populations at 1000–1200 m altitude. The highest proportion of linalool was also reported for the first time in this study from Z. armatum fruits. Among the six major components of the essential oil, terpinen-4-ol was present in the lowest proportion. Results of the present study indicated that the altitude and habitat types could affect the essential oil composition in Zanthoxylum armatum fruits.

中文翻译：

---

花椒 DC 精油成分比较。尼泊尔不同海拔和人口种植的水果

摘要花椒 DC 的果实。从尼泊尔 Salyan 地区的不同海拔（1000-2000 m）和种群（野生和栽培）收集。精油通过Clevenger装置提取，成分通过GC-MS分析。从水果的水蒸馏中获得的精油的产量在 2.72% 到 7.6% 之间。海拔1600-1800m的野生果实产量最高为7.6%，海拔1000-1200m的栽培水果产量最低为2.72%。这是从 Z. armatum 果实中记录的最高精油产量。通过 GC-MS 分析从精油中鉴定出总共 13 种挥发性化合物。主要成分为芳樟醇、肉桂酸酯（E）甲酯、柠檬烯、月桂烯、槭烯和萜品烯-4-醇，它们在所有样品中的含量较高。其他成分被确定的比例非常低。主要成分芳樟醇在海拔1600-1800 m的野生种群中所占比例最高（74.12%），最低（44.73%）来自海拔1000-1200 m的栽培种群。在这项研究中，也首次报道了来自 Z. armatum 果实的最高比例的芳樟醇。在精油的六种主要成分中，萜品烯-4-醇的比例最低。本研究结果表明，海拔和栖息地类型会影响花椒果实中的精油成分。在这项研究中，也首次报道了来自 Z. armatum 果实的最高比例的芳樟醇。在精油的六种主要成分中，萜品烯-4-醇的比例最低。本研究结果表明，海拔和栖息地类型会影响花椒果实中的精油成分。在这项研究中，也首次报道了来自 Z. armatum 果实的最高比例的芳樟醇。在精油的六种主要成分中，萜品烯-4-醇的比例最低。本研究结果表明，海拔和栖息地类型会影响花椒果实中的精油成分。