【摘要】 采用超声波辅助加热法与热水浸提法作比较及设计单因素试验,对红枣多糖最佳提取工艺进行了优化。提取试验结果为∶料液比1 g∶20 mL、提取时间0.5 h、提取温度60℃时提取2次。采用乙醇沉淀法,乙醇体积浓度为95%,加入量为浓缩提取液体积的3倍,沉淀12 h,离心分离,提取率较高。更多还原

【Abstract】 The hot water extraction and ultrasonic assisted extraction were employed to extract polysaccharide from DunHuang’s Jujube.The optimum extraction conditions were obtained by single factor experiment.The optimum polysaccharide extraction conditions were as follows: ratio of solid to liquid 1 g∶20 mL,extract at 60℃,0.5hours for two times.The separation conditions obtained were to precipitate polysaccharide by using three times volume 95% ethanol solution for 12 hours.By centrifugal separation,high extraction percentage could be obtained.更多还原