超滤膜精制胭脂虫红色素的研究  

Study on Refinement of Cochineal Dye by Ultrafiltration Membrane

作　　者：卢艳民[1] 周梅村[1] 郑华[2] 张弘[2] 

机构地区：[1]昆明理工大学化学工程学院,云南昆明650224 [2]中国林业科学研究院资源昆虫研究所,云南昆明650224

出　　处：《食品科学》2008年第9期196-198,共3页Food Science

基　　金：国家林业局科技成果推广项目(2005[72])

摘　　要：用膜分离技术处理胭脂虫色素提取液,研究不同孔径的超滤膜对胭脂虫色素精制结果的影响,确定胭脂虫色素膜精制的方法。调节色素粗提液的pH值在4附近,静置24h后滤去沉淀,所得液体用截留分子量为5kD的螺旋卷式再生纤维素超滤膜进行精制,可以截留73%虫体蛋白,提高胭脂虫红色素的纯度,胭脂虫红酸含量可达54%。Cochineal extract was filtrated by ultrafiltration membrane with different aperturs, and the effects of different ultrafiltration proceses were studied. The optimum ultrafiltration process was determined as follows：aRer adjusting crude extracting solution of cochineal dye at pH 4, standing for 24 h, and then filtrating the supernatant by the spiral-renewable cellulose membrane with molecular weight cut-offof 5000. By this process 73% cochineal protein can be removed out of the cochineal extract, the purity of cochineal dye is increased, and the content of carminic acid reaches 54%.

关 键 词：胭脂虫红色素 超滤膜 精制 

分 类 号：O658.64[理学—分析化学]