Pharmacognosy Department, Faculty of Pharmacy, Cairo University, Kasr-El-Ainy St., Cairo 11562, Egypt.
Z Naturforsch C J Biosci. 2009 Sep-Oct;64(9-10):611-4. doi: 10.1515/znc-2009-9-1001.
The hydrodistilled essential oil content of Origanum majorana L. (Lamiaceae) ranged from 2.5-3% with the maximal value (3%) in spring. Analysis of the oil by GC/MS resulted in the identification of 15, 15, 11, and 14 components in the oils prepared in spring, summer, autumn, and winter, respectively. The composition of the essential oils differed quantitatively and qualitatively according to the time of collection. Thymol (38.4%) and cis-sabinene hydrate (25.3%) were the major components in spring plants. Terpinen-4-ol (37.4%, 20.5%, 16.3%) was a major component in the summer, autumn and winter oils, respectively, cis-Sabinene hydrate (54.4%) was major in winter plants while terpinolene (43.1%) was the main component in autumn plants. Other components detected in lower amounts in all oil samples were sabinene and p-cymene (up to 7.4% and 13.9% in autumn), and alpha-terpinene (up to 13.3% in summer).
迷迭香精油的水蒸馏含量范围为 2.5-3%，最大值为 3%，出现在春季。通过气相色谱/质谱分析，分别在春、夏、秋、冬四个季节制备的油中鉴定出 15、15、11 和 14 种成分。精油的组成根据采集时间的不同在数量和质量上有所不同。在春季植物中，主要成分是百里香酚（38.4%）和顺式-水芹烯（25.3%）。萜品-4-醇（37.4%、20.5%、16.3%）分别是夏季、秋季和冬季油的主要成分，顺式-水芹烯（54.4%）是冬季植物的主要成分，而萜品烯（43.1%）是秋季植物的主要成分。在所有油样中，含量较低的其他成分是柠檬烯和对伞花烃（在秋季高达 7.4%和 13.9%）和α-松油烯（在夏季高达 13.3%）。
