不同提取方法对甘肃紫斑牡丹籽油品质的影响

为了对比冷榨法、溶剂浸出法、超临界CO₂萃取法3种提取方法所得紫斑牡丹籽油的品质，以甘肃紫斑牡丹籽为研究对象，从外观品质、出油率、理化特性及抗氧化能力方对3种方法提取的牡丹籽油品质进行观测。结果表明，采用溶剂浸提法提取的牡丹籽油得率最高，为27.27%；其次是超临界CO₂萃取法，为22.80%；冷榨法最低，为20.17%。采用超临界CO₂萃取法提取的牡丹籽油酸值和过氧化值低，抗氧化性能强，油品质量最高。采用冷榨法提取的牡丹籽油酸值低，品质较好，方法操作简单。3种提取方法各有特点，生产中可根据具体需求选择适用。

Effects of Different Extraction Methods on the Quality of Seed Oil of Paeonia rockii Cultivated in Gansu

To compare the quality of Paeonia rockii seed oil extracted by cold pressing, solvent extraction and supercritical CO₂ extraction, and evaluate the three extraction methods. This study compared the appearance quality, oil yield, physical and chemical properties, and antioxidant capacity of Paeonia rockii seed oil obtained by three methods. The extraction rate of Paeonia rockii seed oil obtained by solvent extraction was the highest (27.27%), followed by supercritical CO₂ extraction (22.80%), and cold pressing (20.17%). The Paeonia rockii seed oil obtained by supercritical CO₂ extraction had low acid value, low peroxide value, strong antioxidant property and the quality was highest. The Paeonia rockii seed oil obtained by cold pressed had low acid value, good quality and simple operation. The three extraction methods had their own characteristics, and suitable methods can be selected according to specific needs in production.