文献类型：期刊文献

英文题名：Extraction and quality analysis of volatile oils from onions by coupling pilot and laboratory equipment based on multi-rectification

作者：Zhang, Li-guo[1];Xue, Zhi-bin[1];Ni, Li-jun[1];Ma, Dong-sheng[1]

机构：[1]E China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China

年份：2014

卷号：137

起止页码：36

外文期刊名：SEPARATION AND PURIFICATION TECHNOLOGY

收录：;EI(收录号：20144300128002);WOS:【SCI-EXPANDED(收录号:WOS:000345181500005)】；

基金：The authors would like to thank the National Ministry of Science and Technology of PRC for financially supporting this research (Contract No. 2006BAI09B07-10); thank Shanghai Science and Technology Committee for financially supporting this research (Contact No. 13401901100).

语种：英文

外文关键词：Multi-rectification; Coupling pilot and laboratory equipment; Onion volatile oils; GC-MS; Sulfide

摘要：A technology based on multi-rectification coupling pilot and laboratory equipment was applied to prepare volatile oils from red or pink onions, which were cultivated in Shandong and Gansu province of China. In the present work, golden yellow, clear and sticky onion volatile oil with the yield of 0.033 mL/kg was prepared by rectifying the distillates collected from the pilot device two times in the laboratory device. GC-MS analysis of the onion oils indicated that the content of dipropyl trisulfide was the highest and changed from 10% to 21% with onion types and cultivation areas. Various kinds of sulfides occupied 53-62.1% of the oils. And the content of the sulfide compounds in the dry substances of onions was 0.244-0.306 g/kg. Red skin onion from Shandong province of China and red and pink skin onion from Jiuquan, Gansu province of China have the same components, only a minor discrepancy in relative content. (C) 2014 Elsevier B.V. All rights reserved.