Extraction of phosphatidylinositol by ionic liquid and ultrasonic wave method

The extraction methods of phosphatidylinositol from soybean lecithin powder by ionic liquid and ultrasonic wave were studied.The effects of extraction times, solid-liquid ratio, ehanol-BmimOH ratio, extraction temperature, extraction time and ultrasonic power on the purity and extraction ratio of phosphatidylinositol were investigated. The purified phosphatidylinositol products were obtained at the conditions as follows: extraction times 3, solid-liquid ratio 1 ∶ 12, ehanol-BmimOH ratio100∶ 7, extraction temperature 35 ℃, extraction time 15 min and ultrasonic power 360 W.Under these conditions, the purity and extracting yield of phosphatidylinositol were 79.53% ± 3.26% and 68.26% ± 1.15%, respectively.