文献类型：期刊文献

英文题名：Rectification extraction of Chinese herbs' volatile oils and comparison with conventional steam distillation

作者：Zhang, Li-Guo[1];Zhang, Chao[1];Ni, Li-Jun[1];Yang, Yu-Jie[2];Wang, Chun-Min[3]

机构：[1]E China Univ Sci & Technol, Chem & Mol Engn Sch, Shanghai 200237, Peoples R China;[2]Med Coll Chengteh, Chengteh 067000, Hebei, Peoples R China;[3]Chengteh Jingfukang Pharmaceut Grp Co Ltd, Chengteh 067000, Hebei, Peoples R China

年份：2011

卷号：77

期号：2

起止页码：261

外文期刊名：SEPARATION AND PURIFICATION TECHNOLOGY

收录：;EI(收录号：20110613643268);WOS:【SCI-EXPANDED(收录号:WOS:000287988500011)】；

基金：The authors would like to thank the National Ministry of Science and Technology of PRC for financially supporting this research under contract No. 2006BAI09B07-10.

语种：英文

外文关键词：Volatile oil; Rectification extraction; Steam distillation; Bupleurum; Pogostemon cablin (Blanco) Benth; Pericarpium Citri Reticulatae

摘要：Rectification is a very efficient technique for gas-liquid separation and has being widely applied in the fields of chemical, petrochemical engineering, etc. In order to explore adaptability of using rectification extraction (RE) to isolate volatile oils from Chinese herbs, RE and steam distillation (SD) techniques were applied to isolate volatile oils from three typical Chinese herbs Bupleurum, Pogostemon cablin (Blanco) Benth (PCB), Pericarpium Citri Reticulatae (PCR) in this paper. The experiment shows that SD technique cannot get volatile oils and only aromatic water from Bupleurum but RE can prepare both. RE technique increases 10% oil yield of PCB and 20% of PCR compared with SD, respectively. Therefore, RE would be more effective and suitable for enriching volatile oils from plants or herbs in which volatile oils are water-soluble and with low-content. GC-MS analysis of the products indicates that most compounds in volatile oils of PCB and PCR prepared by SD and RE methods (techniques) are the same, and the percentage contents of the most common compounds change little. Therefore, the quality features of volatile oils extracted by RE are similar to those produced by SD. So RE is not only a way to prepare samples for the aim of volatile oils' quality analysis but also a good alternative technology in industry for isolating volatile oils from Chinese herbs or other plants. (C) 2010 Elsevier B.V. All rights reserved.