超声波协同水酶法提取小麦胚芽油的研究

Aqueous enzymatic extraction of wheat germ oil assisted by ultrasonic

采用水酶法结合超声波预处理提取小麦胚芽油,重点对酶解条件进行优化。得到适宜酶解条件为:料液比1:14、碱性蛋白酶添加量1.5%、酶解温度50℃、时间2h、酶解pH11,此时的小麦胚芽提油率为71.92%。在此基础上采用超声波预处理以提高小麦胚芽提油率,适宜超声波预处理条件为:超声波功率500W、超声时间4min,此时的小麦胚芽提油率为82.20%,比未经超声波预处理的高出10.28%。

Aqueous enzymatic extraction of wheat germ oil assisted by ultrasonic was studied, the enzymatic hydrolysis conditions were optimized emphatically. The optimal enzymatic hydrolysis conditions were as follows：ratio of stuff to water 1 ： 14, dosage of Alcalase 1.5%, temperature 50℃, time 2 h, pH 11. Under the optimal conditions,the oil extraction efficiency reached 71.92%. The ultrasonic pre-irradiation at