超声波辅助提取枇杷叶中熊果酸  

Extraction of Ursolic Acid from Loquat with Ultrasonic

作　　者：彭丽红[1] 

机构地区：[1]廊坊卫生职业学院药学系,廊坊065001

出　　处：《食品工业》2012年第8期59-61,共3页The Food Industry

摘　　要：主要研究了超声波辅助提取枇杷叶中熊果酸的提取工艺条件,并通过紫外可见分光光度计对提取物中的熊果酸进行定量测定。探讨了超声波频率、原料粉碎粒度、提取温度、提取时间、料液比等对提取效果的影响;并采用L16(45)正交试验优化提取工艺。结果表明超声波频率是影响熊果酸提取率的最主要因素,其最佳工艺条件为:声波频率为低频(25 kHz),粉碎度80目、料液比1︰12、温度60℃、时间30 min,提取2次,在此条件下,熊果酸的提取含量达40.2 mg/g.Ultrasonic-assisted was used to extract the ursolic acid from loquat,and UV spectrophotometer was used to determinate the content of ursolic acid in loguat.Discussed the effect of ultrasonic frequency,the particle size,the extraction time,the extraction temperature,the ratio of solution to material,and designed the orthogonal test L16（45） to optimize the conditions of ultrasonic assisted extraction.The optimum conditions of ultrasonic-assisted extraction were as follows： low-frequency（25 kHz）,the particle size 80 item,the extraction time 30 min,extraction temperature 60 ℃,solid of liquid ratio 1︰12（g/mL）.Under the best conditions the content of ursolic acid was 40.2 mg/g.

关 键 词：枇杷叶 熊果酸 紫外分光光度法 超声波 

分 类 号：TQ914.1[化学工程]