孜然精油及其熟制精油的研究

利用超临界CO₂萃取技术提取孜然精油,通过研究原料粒度、萃取压力、萃取温度、萃取时间等因素对孜然油萃取率及品值的影响,确定超临界CO₂萃取最佳工艺参数。另外,采用熟化工艺对孜然原料进行前处理再利用超临界CO₂萃取技术提取,获得具有熟香风味的熟制孜然精油。研究结果表明,超临界CO₂萃取孜然油的最佳工艺参数为:原料粒度30目,萃取压力30MPa,萃取温度60℃,萃取时间2.5h,精油得率约为13.97%,精油中枯茗醛质量分数高达32.75%。熟制孜然精油熟化工艺中最佳焙烤温度为180℃,超临界CO₂最佳萃取条件为原料粒度30目,萃取压力25MPa,萃取温度60℃,萃取时间2.5h,精油得率约为11.38%,精油中枯茗醛质量分数高达31.95%。

Study on cumin essential oil and roasted cumin essential oil

The supercritical CO₂ fluid extraction technology was used to extract cumin essential oil.The effect of granularity of cumin powder,extract pressure,extract temperature,extract time on the extract rate and performance number of cumin oil were researched,and the optimal extract conditions were obtained,respectively.Besides,the curing process was adopted for the pri-treatment technology to get the roasted cumin essential oil.The results showed that,the optimal conditions of the supercritical CO₂ extraction for untreated cumin essential oil extracting were as follows:the grind degree of material was at 30 hole,the extraction pressure was at 30MPa,extraction temperature was at 60℃,extraction time was at 2.5h,the yield was 13.97% and the content of cuminal was 32.75%.For the extraction of roasted cumin essential oil,the roasting temperature was 180℃,the grind degree of material was at 30 hole,the extraction pressure was 25MPa,extraction temperature was 60℃,extraction time was 2.5h,the yield was 11.38% and the content of cuminal was 31.95%.