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牡丹籽油超临界二氧化碳萃取工艺

, PP. 144-150

Keywords: 牡丹籽油,超临界二氧化碳萃取,中心复合设计,响应面分析

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Abstract:

以牡丹籽为原料,利用超临界CO2萃取提取牡丹籽油。采用单因素试验对影响牡丹籽油得率的5个影响因素(筛分粒度、CO2流量、压力、温度和时间)进行考察。以油得率为响应目标,对3个主要影响因素(筛分粒度、压力和温度)运用中心复合设计法,并经响应面法优化分析得到二次多项式回归方程预测模型,确定了超临界CO2萃取牡丹籽油的最佳条件为:筛分粒度60目,CO2流量20L/h,压力35MPa,温度45℃,时间120min。在较优提取条件下,牡丹籽油得率可达到24.22%。GC-MS结果表明牡丹籽油中富含不饱和脂肪酸,其中亚油酸和亚麻酸的含量分别为

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