超临界CO2萃取姜黄油的工艺研究

本文首次报道了超临界CO_2流体提取姜黄油的工艺研究。着重探讨了压力、温度、流量、时间对收油率的影响,确定了超临界CO_2提取姜黄油的最佳工艺条件。用GC-MS分析了所提取的姜黄油的化学组成。对姜黄油的超临界CO_2提取和水蒸汽蒸馏进行了比较。同时还进行了超临界CO_2提取姜黄油的工业化试验。结果证明,压力和温度是最重要的影响因素,最佳的工艺条件是萃取压力为25MPa、温度为45℃,分离1压力为12.5MPa、温度为60℃,分离Ⅱ压力为6MPa、温度为38℃,CO_2流量为9kg/kg·h,萃取时间为2小时;超临界CO_2萃取和水蒸汽蒸馏提取的姜黄油化学成分一致,只是含量存在一定的差异;超临界CO_2提取法比水蒸汽法优越,表现为收油率高、提取时间短等;姜黄油用超临界CO_2萃取工艺进行工业化生产是可行的。

Technological Study on the Supercritical-CO2 Fluid Extraction of Curcuma longa Oils

This paper first reports technological study on the extraction of Curcuma longa oils by supercritical-CO2 fluid, mainly studies the influence of pressure, temperature, flow rate of CO2 and time on the yield of the oils, determines optimum technology of extracting the oils, analyzes chemical constituents extracted, compares the oils from SFE-CO2 and SD technology, studies industrial test on the SF-CO2 extraction. The results shows pressure and temperature are more important factors of influence; the optimum technological condition is the extracted pressure 25 MPa and temperature 45 degrees C, isolated pressure I 12.5 MPa and temperature I 60 degrees C, isolated pressure II 6MPa and temperature II 38 degrees C, CO2 flow rate 9 Kg/Kg.h, and extracted time 2 h; the constituents from SFE-CO2 and SD methods are identical, but their content has some difference; SFE-CO2 technology is better than that of SD, which is high yield shorter time, etc.; the industrial production of the oils with SFE-CO2 method is available.