【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%。更多还原

【Abstract】 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 min. 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%.更多还原