响应曲面法优化山药中多糖的微波提取工艺  

Study on the process of the Dioscorea opposite Thunb by microwave-assisted extraction using response surface methodology

作　　者：王安良[1] 云霞[1] 杨红[1] 

机构地区：[1]大连工业大学生物与食品工程学院,大连116034

出　　处：《食品科技》2007年第12期86-90,共5页Food Science and Technology

摘　　要：采用微波法辅助提取山药多糖,改进了传统的水提工艺,通过二次回归正交旋转组合设计方法研究了微波功率、微波时间、水提温度和水提时间对山药多糖提取率的影响,建立数学模型,以确定微波提取山药多糖的最优条件。利用模型的响应曲面图及其等高线图,对影响微波提取山药多糖提取率的关键因素及其相互作用进行探讨,得到的优化工艺参数为:微波功率为546W、微波时间为77s、水提温度为64.7℃、水提时间为2.3h,水提效果最佳,山药多糖的提取率为2.60%。By means of orthogonally rotational combination design, the technology of microwave-assisted extracting polysaccharides study the effect of the producing rate between the four extraction factors （the microwave radiation power, the radiation time, the extracting temperature and the extracting time） using aqueous solvent from the Dioscorea opposite Thunb. In order to obtain the optimization extraction of polysaccharides. The regression equation of the relationship between the four factors were established. Using the response surface and contour map of the mathematical model, the key factors and the reciprocities of the extraction yield of polysaccharides were investigated. The result shows that the optimum technological parameter were： the microwave radiation power 546W, the radiation time 77s, the extracting temperature 64.7℃, the extracting time 2.3h, and the polysaccharides yield could be up to 2.6%.

关 键 词：微波辅助萃取 响应曲面法 山药 多糖 

分 类 号：TS201.1[轻工技术与工程—食品科学]