Textual research on origin and development of genuine medicinal herbs of Shanyao / 中国中药杂志

Making textual research on Bencao and documents, this article inquires to the origin and development of genuine medicinal herbs of Shanyao (Rhizoma Dioscoreae) on the points of change of the growing areas and the development of cultivating and processing techniques and clinical uses. The study indicates that the medicinal use of Dioscorea oposita went through several periods: the period of the use of wild D. oposita before Tang dynasty, the period of the mixed use of wild and cultivating D. oposita from Song to the middle of Qing dynasty, and the period of the main use of cultivating D. oposita after the latter stage of Qing dynasty (18th century). It considers that the growing area of genuine medicinal herbs of Shanyao appeared in Ming dynasty and finally formed "Huaishanyao" on the early of 20th century. The acknowledgement of Huaishanyao as genuine medicinal herbs is related closely to its cultivating and processing techniques and clinical uses. The development of cultivating techniques provided the resource of Shanyao, the invention of processing techniques improved its appearance and quality, and the clinical uses and practices by modern and contemporary famous medical men played an important role to the social approval and development of Huaishanyao.

Analysis of constituents of essential oils from fresh and dried pericarp of citrus sinensis by GC-MS / 中国中药杂志

<p><b>OBJECTIVE</b>To analyze and compare the constituents of the essential oils from the fresh and dried pericarps of Citrus sinensis.</p><p><b>METHOD</b>The essential oils from the fresh and dried pericarps of C. sinensis were extracted by water steam distillation method and analyzed by GC-MS.</p><p><b>RESULT</b>28 and 25 components were identified from the essential oils of the fresh and dried pericarps of C. sinensis respectively, 37 components were identified from both samples totally, among which 26 components were identified in the essential oils of the pericarps of C. sinensis for the first time.</p><p><b>CONCLUSION</b>The most components in both oil samples were similar and main component of the both oils was limonene (90. 16% and 77. 34%).</p>