超临界CO_2萃取烟草中烟碱  

Study on Extraction of Nicotine from Tobacco by Supercritical CO_2

作　　者：刘亚娟[1] 王志祥[2] 林文[2] 戴琳[2] 

机构地区：[1]广东食品药品职业学院,广东广州510520 [2]中国药科大学制药工程教研室,江苏南京210009

出　　处：《广东化工》2008年第7期137-140,共4页Guangdong Chemical Industry

摘　　要：为研究超临界CO2萃取烟草中烟碱的工艺条件,利用实验室超临界萃取装置对烟草中烟碱进行了提取,考察了萃取压力、萃取温度、夹带剂乙醇的浓度、萃取时间等因素对烟碱提取率的影响,并就各个工艺参数对萃取率的影响机理和原因进行了分析与讨论。结果表明:在本研究范围内,最佳萃取工艺条件为:萃取压力30 MPa,萃取温度50℃,夹带剂乙醇浓度75%～80%,夹带剂流量为0.5 mL.min-1时,萃取时间为2～2.5 h。In order to study the process conditions of extraction nicotine from tobacco with supercritical CO2, the influences of extraction pressure, extraction temperature, the concentration of ethanol modifier, and extraction time on the extraction effect of nicotine were investigated using laboratory supercritical extractor. The mechanisms and causes of the influence of each technological parameter are analyzed and discussed. The results showed that the optimal extraction conditions were as follows：the extraction pressure was 30 MPa, the extraction temperature was 50 ℃, the concentration ethanol modifier was 75 %-85 %, the flux of CO2 was 0.5 mL·min^-1 and the extraction time was 2.5 h.

关 键 词：超临界CO2萃取 烟碱 工艺 

分 类 号：TQ028.32[化学工程] TS411[农业科学—烟草工业]