超声法制备苘麻籽油微胶囊的工艺优化

摘要

以β-环糊精为壁材,采用单因素试验和Box-Behnken试验对超声法制备苘麻籽油微胶囊的工艺进行优化。结果表明：最佳工艺条件为超声功率75W、包埋温度62.3℃、包埋时间88min,在此条件下实际包埋率为81.35%,与模型预测值之间具有较好的拟合性;在3个因素中,包埋温度和包埋时间对包埋率的影响极显著,超声功率影响显著。该方法简单可行,是一种制备苘麻籽油微胶囊的较好方法。%The essential oil of Semen Abutili was extracted by petroleum ether under ultrasonic assistance and microencapsulated using β-cyclodextrin（β-CD） as the wall material.Based on one-factor-at-a-time experiments,Box-Behnken experimental design combined with response surface analysis was applied to optimize process conditions for the extraction and microencapsulation of the oil.The optimal process conditions were determined as follows： 75 W ultrasonic power,62.3℃ encapsulation temperature and 88 min encapsulation time.Under the optimal conditions,the observed value of encapsulation rate was 81.35%,which was in good agreement with the predicted value.Encapsulation rate was highly significantly affected by encapsulation temperature（P0.01） and time（P0.01）.Ultrasonic power presented a significant effect（P0.05）.