薇菜水不溶性膳食纤维提取工艺研究

Study on extraction of insoluble dietary fiber from Ormund pomace

采用碱浸法提取薇菜中水不溶性膳食纤维。首先对影响碱法提取率的4个因素:料液比、碱液浓度、反应温度及提取时间进行了单因素实验,再通过正交实验确定了碱法最佳工艺条件。结果表明:料液比为1∶10、碱液浓度为0.5mol/L、碱浸温度为65℃、碱浸时间为1h,在此工艺条件下,薇菜水不溶性膳食纤维的提取率达到41.81%。

Insoluble dietary fiber was extracted from Ormund pomace by alkali dissolution. Single factor tests were made on the 4 factors influencing extraction rate （ratio of material to solution, concentration of alkaline, reaction temperature and reaction time） and the optimal extraction technology was determined by L9（34） orthogonal experiments. The results showed that the ratio of material to solution 1 ： 10, the concentration of alkaline 0.5 mol/L, the reaction temperature 65℃and the reaction time 1.5 h could lead to the yield as high as 41.81%.