超声波辅助提取荸荠皮天然棕色素的工艺研究  

Ultrasound-assisted extraction of natural brown pigment from Eleochairis toberosa peel

作　　者：罗杨合[1] 黄皓妍[1] 韦飞梅[1] 刘玉清[1] 毛献萍[1] 

机构地区：[1]贺州学院化学与生物工程系,广西贺州542800

出　　处：《应用化工》2008年第9期999-1001,1005,共4页Applied Chemical Industry

基　　金：广西自然科学基金项目(0832274);广西教育厅面上科研项目(200607MS008)

摘　　要：研究了超声波辅助提取荸荠皮天然棕色素的条件,正交实验结果表明,最佳工艺条件为:以50%的食用酒精为溶剂,料液比为1∶10(g/mL),超声频率为20 kHz、超声功率为80 W,超声时间为40 min,浸提温度为70℃。在此条件下,荸荠皮棕色素的浸提率为22.79%,较之常规浸提法提高了16.99个百分点,而且超声波没有改变荸荠皮棕色素的性状和结构。Affecting factors of extracting natural brown pigment from Eleochairis toberosa peel assisted by ultrasonic wave were investigated. The results of orthogonal test indicated that the optimal conditions were the alcohol concentration 50% , material-alcohol solution ratio 1 ： 10 （ g/mL）, the frequency of ultrasonic wave 20 kHz, the power of ultrasonic wave 80 W, ultrasonic time 40 min and temperature 70 ℃. Under the optimal conditions, the extraction rate of natural brown pigment from Eleochairis toberosa peel was 22.79% ,which increased by 16.99% compared with conventional extract approach,and its characters and structure is not changed .

关 键 词：荸荠皮 天然棕色素 超声波 提取 

分 类 号：TS202.3[轻工技术与工程—食品科学]