红薯叶叶绿素的提取工艺及稳定性  

Extraction and Stability of Chlorophyll from Sweet Potato Leaves

作　　者：陈新香[1] 蔡碧琼[1] 黄明堦[1] 张福娣[1] 孔祥奚[1] 

机构地区：[1]福建农林大学生命科学学院,福建福州350002

出　　处：《广州化工》2013年第16期72-75,共4页GuangZhou Chemical Industry

基　　金：福建省教育厅B类科技项目(JB10058)

摘　　要：通过单因素实验和正交试验,确定了以85%乙醇为浸提溶剂的红薯叶绿素提取工艺条件:乙醇体积浓度85%、料液比1∶70、浸提温度60℃、时间5.0 h为最优条件,提取率达0.2103 mg/g。并对叶绿素的光、热稳定性及耐酸碱性方面进行研究。结果表明:叶绿素具有良好的耐热性;光照会影响它的稳定性;在弱碱性中,它的稳定性良好。Using single factor experiment and orthogonal test,the optimal conditions for the extraction by using 85% ethanol as solvent were obtained as follows： 1∶70 of liquid to solid ratio,60 ℃ of extraction temperature and 5.0 h of extraction time.The extraction ratio of chlorophyll could be achieved 0.2103 mg/ g.Moreover,the photo-stability and thermo-stability of the chlorophyll and its tolerance for acidifi-cation were further studied.The result showed that chlorophyll had good tolerance for thermo-stability.The stability of the chlorophyll could be influenced in lighting.Chlorophyll was relatively stable under alkalescent circumstances.

关 键 词：红薯叶 叶绿素 提取 稳定性 

分 类 号：TQ914.1[化学工程]