Diurnal Effects on Chinese Wild <i>Ledum palustre</i>L. Essential Oil Yields and Composition

• 作者: Hongxiao Wang Liangliang Zhang Man Xu Xinyu Hu Yongmei Wang
• 来源期刊: 分析科学方法和仪器期刊(英文)
• 学科: 医学
• 关键词: Ledum palustre L. DIURNAL Changes ESSENTIAL OIL Yield ESSENTIAL OIL COMPOSITION Alpha-Thujenal
• 年，卷（期）: fxkxffhyqqkyw,（2）
• 页码范围: 47-55
• 页数: 9页
• 分类号: R28

摘要

This study was conducted to evaluate the diurnal effect on essential oil yield and composition of Ledum palustre L. grown in northern Inner Mongolia, China. Essential oil content and composition were determined and compared as a function of different harvesting times viz. 7:00 AM, 11:00 AM, 3:00 PM, 7:00 PM, and 11:00 PM within a day. The essential oil obtained by hydrodistillation was investigated by gas chromatography-mass spectrometry (GC-MS). The yield of essential oil was varied from 1.21% to 1.62%;the maximum oil yield was obtained at 3:00 PM and the minimum at 7:00 PM. Similar to oil yield, qualitative difference in essential oil composition of L. palustre was observed. For the best essential oil yields, L. palustre should be harvested during 11:00 AM to 3:00 PM.