超声波液态CO2提取分离芹菜籽油工艺条件优化的研究

目的：优选超声波液态CO2 提取分离芹菜籽油的工艺条件。方法：通过单因素试验和正交试验考察提取压力、超声时间、超声功率和料液比对芹菜籽油得率的影响。结果：以液态CO2 提取芹菜籽油各因素对芹菜籽油得率的影响大小依次为超声时间＞超声功率＞提取压力＞料液比，优化的提取工艺参数为超声时间30min、超声功率100W、提取压力4MPa、料液比1:7(m/V)，在此操作条件下，芹菜籽油得率2.8%。结论：超声波液态CO2提取分离芹菜籽油是一种有效的新型分离技术。

Ultrasonic-assisted Liquid Carbon Dioxide Extraction of Celery Seed Oil

Objective: To optimize the extraction of celery seed oil with liquid carbon dioxide under the assistance of ultrasonic for achieving maximum oil yield. Methods: The effects of four process conditions, i.e., extraction pressure, length of extraction time, ultrasonic power and material-to-liquid ratio on the yield of celery seed oil were investigated using single factor and orthogonal array design methods. Results: The significance sequence of the conditions influencing the yield of celery seed oil was as follows: length of extraction time > ultrasonic power > extraction pressure > material-to-liquid ratio, and their optimum values were as follows: temperature 30 min, ultrasonic power 100 W, extraction pressure 4 MPa and material-to-liquid ratio 1:7 (m/V). Under these conditions, the yield of celery seed oil reached up to 2.8%. Conclusion: Ultrasonic-assisted liquid carbon dioxide extraction provides a new and efficient separation technique for celery seed oil extraction.