响应面法优化超临界CO_2流体萃取苹果籽油的工艺研究  

Optimization of Supercritical CO_2 Fluid Extraction of Apple Seed Oil Using Response Surface Methodology

作　　者：陈芹芹[1] 李景明[1] 胡雪芳[1] 姜莎[1] 石宝霞[1] 倪元颖[1] 

机构地区：[1]中国农业大学食品科学与营养工程学院,北京100083

出　　处：《食品科学》2009年第14期47-51,共5页Food Science

基　　金："十一五"国家科技支撑计划项目(2006BAD05A13)

摘　　要：利用超临界CO2萃取技术提取苹果籽油。通过单因素试验选取萃取压力、萃取温度和时间作为Box-Behnken设计的变量,利用响应面法分析得到超临界CO2萃取苹果籽油的优化工艺条件。结果表明:超临界CO2萃取苹果籽油的适宜工艺参数为萃取压力41MPa、萃取温度56℃、萃取时间110min、CO2流量1.8ml/min、物料粉碎度60目,在此条件下,苹果籽油提取率达到24.36%。One-factor-at-a-time （OFAT） experiments were conducted to analyze five factors affecting extraction yield of apple seed oil including grinding granularity of apple seeds, extraction pressure, duration and temperature. Based on the experimental results obtained, the influences of three key factors including extraction pressure, duration and temperature and their interactions on enzyme hydrolysis were evaluated by response surface methodology. The optimal levels for each variable to obtain the highest extraction yield of apple seed oil were as follows： pressure 41 MPa, temperature 56 ℃, and duration 110 rain. Under such conditions as well as grinding granularity of material 60 mesh and CO2 flow rate 1.8 ml/min, the extraction yield of apple seed oil reached 24.36%.

关 键 词：超临界CO2萃取 优化 苹果籽油 响应面法 

分 类 号：TS255.36[轻工技术与工程—农产品加工及贮藏工程]