摘 要：在单因素实验的基础上利用正交实验设计考察碱法提取过程中碱浓度、提取时间、料液比对茯苓多糖提取率的影响，确定最佳提取工艺条件为 : NaOH浓度 0. 75mo l /L ,时间2min ,料液比 1∶40。在此工艺条件下茯苓多糖的提取率高达86%。
关键词：茯苓多糖；超声波；提取；正交试验
Study on the Extraction Technology of Poria cocos Polysaccharide under Ultrasound by Orthogonal Design
Abstract: With the assistance of ultrasound, the polysaccharide from Poria cocos wolf was extracted using NaOHaq. The influence of extraction conditions including extraction time, ratio of raw materials and NaOHaq(V), concentration of media were studied. Then the optimization of conditions of extraction by the orthogonal design was investigated, it was found that the optimum conditions were NaOH 0.75mol/L, extraction time 2min, materials/solution1:40. Under the best condition, the extraction ratio of polysaccharide from Poria cocos wolf was as high as 86%.
Key words： Poria cocos polysaccharide ; ultrasonic wave ; extraction ; orthogonal test
