从大豆粉末中提取卵磷脂的超声辅助萃取新工艺

摘要

采用超声波为辅助手段,以卵磷脂得率为评价指标,用乙醇提取大豆粉末中卵磷脂.结果表明,最佳提取工艺条件为:乙醇浓度为80%,提取温度为40℃,超声时间为50 min,固液比为1:3.0(g/mL),萃取次数为2次时,可以有效地提取大豆粉末中卵磷脂达12.85%.%Based on ultrasonic method the experimental results were evaluated by the yield of soybean powder lecithin.The lecithin was extracted using ethanol.The optimum extraction parameters were obtained by orthogonal design method.The results indicated that when the concentration of ethanol, temperature, extraction time,ratio of solid to liquid and extraction times were 80％ ,40 ℃ ,50 min,l∶3.0 and 2,respectively,the lecithin from soybean powder was obtained of 12.85％.