采用超声波辅助提取冬瓜籽油,在单因素试验的基础上通过正交试验对提油工艺进行优化,通过GC-MS对所得冬瓜籽油的脂肪酸组成进行分析.结果表明:冬瓜籽油最优提取工艺条件为以正己烷为提取溶剂、料液比1∶5、超声功率400 W、提取温度60℃、超声时间10 min,在此条件下冬瓜籽油提取率为96.56％;所得冬瓜籽油经GC-MS共鉴定出7种脂肪酸,为棕榈酸(30.78％)、棕榈油酸(0.15％)、十七烷酸(0.21％)、油酸(5.45％)、亚油酸(48.55％)、硬脂酸(14.31％)和花生酸(0.55％);冬瓜籽油水分含量0.13％,酸值(KOH) 2.16 mg/g,色泽亮橙色.%The ultrasound-assisted extraction of Benincasa hispida Cogn.seed oil was studied.The extraction conditions were optimized by orthogonal experiment based on single factor experiment,and the fatty acid composition of Benincasa hispida Cogn.seed oil was analyzed by GC-MS.The results showed that the optimal extraction conditions were obtained as follows:with n-hexane as solvent,ratio of solid to liquid 1∶5,ultrasonic power 400 W,extraction temperature 60 ℃ and ultrasonic time 10 min.Under the optimal conditions,the extraction rate was up to 96.56％.Seven kinds of fatty acids were identified from Benincasa hispida Cogn.seed oil,and they were palmitic acid (30.78％),palmitoleic acid (0.15％),heptadecanoic acid(0.21％),oleic acid(5.45％),linoleic acid (48.55％),stearic acid (14.31％) and arachidic acid(0.55％).The water content and acid value of Benincasa hispida Cogn.seed oil were 0.13％ and 2.16 mgKOH/g respectively,and the color was bright orange.
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