黄精多糖提取工艺的研究

为研究水提醇沉工艺中不同提取条件对黄精多糖提取率的影响，以优化黄精多糖提取工艺。在单因素实验的基础上，通过四因素三水平正交实验确定工艺参数，紫外分光光度法测定黄精多糖含量。研究表明：温度对提取工艺有极显著影响，提取时间提取工艺有显著影响，提取次数和物料比对提取率影响不大。说明黄精多糖最佳提取工艺条件为：固料比1:15，提取温度90℃，提取时间4 h，提取1次黄精多糖的得率可达3.2248%。

Study on the Extraction Process of Polygonatum Polysaccharide

In order to study the different parameter of extracting polygonatum polysaccharides （PSP） from polygonatum by hot water and sinking in alcohol, and the best extracting process was ensured. The parameter of extracting was ensured by four-factor and three levels orthogonal experiment on the one-factor experiment and the content of Polygonatum polysaccharides were determined by UV. The results showed that temperature and time had very significant effects on the extracting rate of Polygonatum polysaceharides. The times of extracting and ratio of solid to liquid had little effected on the extracting rate of Polygonatum polysaccharides. The best extracting process was extracting temperature 90℃, ratio of solid to liquid 1：15, extracting time 4 h, extracting times 1 and the extracting rate of Polygonatum Polysaecharides was 3.2248%.