响应面法优化茶叶籽油超临界二氧化碳萃取工艺

摘要

采用响应面法优化超临界CO2萃取茶叶籽油的工艺条件。在单因素试验基础上,选择萃取压力、萃取温度、分离温度、萃取时间为影响因素,以茶叶籽油得率为响应值,应用中心组合Box-behnken试验设计建立数学模型,进行响应面分析。结果表明,超临界CO2萃取茶叶籽油的最优工艺条件为：萃取压力29MPa、萃取温度43℃、分离温度36℃、萃取时间74min,该条件下,茶叶籽油得率达26.13%。%Response surface methodology was employed to optimize the supercritical carbon dioxide extraction conditions of tea seed oil.On the basis of one-factor-at-a-time experiments,a mathematical model describing the effects of extraction pressure,extraction temperature,separation temperature and extraction time on oil yield was created using Box-Behnken experimental design and analyzed by response surface methodology.The optimal extraction conditions were found as follows： extraction pressure 29 MPa,extraction temperature 43 ℃,separation temperature 36 ℃,and extraction time 74 min,resulting in an oil yield of 26.13%.