海带中褐藻糖胶的酸提法研究  

Study on Extraction of Fucoidan from Laminaria Japonica by Acid Method

作　　者：程忠玲[1] 赵文辉[1] 

机构地区：[1]承德石油高等专科学校化学工程系,河北承德067000

出　　处：《辽宁化工》2008年第8期514-515,共2页Liaoning Chemical Industry

基　　金：河北省科学技术研究与发展指导项目(NO05215512)

摘　　要：采用酸提法从海带中提取褐藻糖胶,分别采用MgCl、乙醇分级沉淀法进行纯化。主要探讨了提取时间、温度、pH等因素对提取率的影响。结果表明,在提取温度70℃,pH2.5,70%乙醇浓度,提取3 h,提取率为7.3%。乙醇分级沉淀法提取率高于MgCl法。Fucoidan from Laminaria japonica was extracted by acid method, and purified by fractional precipitation with alcohol, magnesium chloride. Effects of extraction temperature, extraction time and pH on extraction rate were discussed. It was found that the extraction rate approached the optimum of 7.3% as pH and alcohol concentration were 2.5 and 70% respectively at 70℃ for 3 h. the fractional precipitation with alcohol was better than that with magnesium chloride.

关 键 词：海带 褐藻糖胶 提取纯化 

分 类 号：TQ028.3[化学工程]