CO_2超临界萃取八角油树脂工艺优化研究  

Optimization of Supercritical Carbon Dioxide Extraction of Aniseed Oleoresin

作　　者：王永斌[1] 王家良[1] 

机构地区：[1]蚌埠学院食品科学与工程系,安徽蚌埠233000

出　　处：《食品科学》2007年第8期133-137,共5页Food Science

基　　金：蚌埠学院科研项目(BBXY2006-204A)

摘　　要：目的:优化CO2超临界萃取八角油树脂最佳工艺条件。方法:采用Plackett-Burman设计对影响超临界CO2萃取八角油树脂的因素进行了筛选,所选取的7个相关因素为:原料粒度、CO2流量、萃取压力、萃取温度、萃取时间、解析压力和解析温度。在此基础上,采用三因素三水平Box-Behnken统计学实验设计方法对影响萃取率的关键影响因素萃取压力、萃取温度和萃取时间的最佳水平范围作了进一步的研究与探讨;结果:实验表明,在萃取压力大于27.2MPa、萃取温度为33.5～44.9℃时,在1.82～2.85h内皆可获得本研究中的最大得率8.29%;结论:通过对萃取率模型方程解逆矩阵,求得在萃取压力为29.31MPa、萃取温度为44.87℃和萃取时间为2.30h时,八角油树脂萃取率的预测值可达8.52%。Objective： To optimize the process of supercritical CO2 fluid extraction of the aniseed oleoresin from aniseed powder; Method： An effective two-phase statistical approach to enhance extracting rate. In the In＇st phase, Plackett-Burman design was undertaken to evaluate the effects of the seven factors： namely material size, CO2 flow rate, extracting pressure, extracting temperature, extracting time, separating pressure and separating temperature. By regression analysis, extracting pressure, extracting temperature and extracting time were found to be important for extraction of aniseed oleoresin. In the second phase of the optimization process, a three-level three-factor Box-Behnken design was used to optimize the above critical internal factors. Results： The results showed that the maximum experimental extracting rate of aniseed oleoresin （8.29%） can be obtainedin 1.82-2.85 h, with the extracting pressure 27.2 MPa and extracting temperature 33.5-44.9℃; Conclusion： The maximum predicted aniseed oleoresin extracting rate 8.52% was obtained by solving the quadratic regression equation. In this situation, the optimum conditions are： extracting pressure, 29.31 MPa; extracting temperature, 44.87℃ and extracting time 2.30 h.

关 键 词：超临界C02 八角油树脂 PLACKETT-BURMAN设计 BOX-BEHNKEN设计 

分 类 号：TS202.3[轻工技术与工程—食品科学]