【摘要】 目的　比较不同产地、不同采收期的广藿香挥发油主要成分的含量 ,为广藿香物种和道地性与品质评价提供可靠依据。方法　GC MS联用技术。结果　吴川、遂溪、雷州和万宁产广藿香含油率较广州和高要产高 4～ 6倍。牌香类的挥发油中均含有较多量的广藿香酮 ;琼香类的挥发油中不含或含较少量的广藿香酮 ,但含较多量的广藿香醇。不同采收期的广藿香挥发油从 7月至 11月呈增加趋势。结论　根据挥发油成分的不同 ,将不同产地的广藿香分为 2个化学型 ,即广藿香酮型 (牌香类 )和广藿香醇型 (琼香类 ) ,此与基因分析结果 (matK和 18SrRNA序列 )相一致更多还原

【Abstract】 Aim To analyze and compare the constituents of the volatile oil of Pogostemon cablin collected from different regions of cultivation and harvesting times in order to evaluate the quality of Shipai Huoxiang and to expound the chemical intension of Pogostemon cablin . Methods The combination of GC and MS. Results The volatile oil compositions of Herba Pogostemonis collected from various of cultivation regions and harvesting times are obviously different. Based on the chemical differences of the volatile oil compositions, Pogostemon cablin is divided into two chemotypes, Pogostone type and Patchouliol type. The former was cultivated in Guangzhou and Gaoyao regions, locally named as “Shipai Huoxiang”; the latter was locally named as “Hainan Huoxiang”, cultivated in Wuchuan, Suixi and Leizhou regions of Guangdong Province and Wanning region of Hainan Province. The Pogostone type contains rich oxygenated components, especially pogostone in the volatile oil compositions and poor non oxygenated composition with patchouliol. The above chemical data may be used as evaluation standard for the authentic Shipai Huoxiang. The Patchouliol type contains similar quantities of oxygenated and non oxygenated composition, especially rich patchouliol with poor pogostone in oxygenated compositions, rich δ guaiene and α guaiene in non oxygenation compositions. The contents of volatile oil and their constituents were varied due to different harvesting time. The yields of pogostone and volatile oil of Shipai Huoxiang was higher in July. The quality of the samples collected in this month was better. Conclusion According to the volatile oil compositions, there are two chemotypes (Pogostone type and Patchouliol type) in Pogostemon cablin plant. These two chemotypes correspond to thegenotypes of plastid mat K gene and nuclear 18S rRNA gene by cluster analysis.更多还原