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中空纤维酶膜反应器连续制备DP_8-12糊精的研究

Study on the Continuous Production of DP_8-12 Dextrin with Hollow Fiber Membrane-Enzymatic Reactor

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【Author】 Zhu Qiuxiang 1,Li Zhida 1,Wei Jianmin 2,Lin Shunzhong 1,Fang Zhihuo 1,Wu Hongjing 3 (Department of Biotechnology and Food Science,Fuzhou University 1,Fuzhou 350002) (Institute of Membrane Separation Technology,Tianjin University of textile Indus

【机构】福州大学侨兴轻工学院；天津纺织工学院膜分离工程研究所；中科院福建物构所福州350002；福州350002；天津300160；福州350002；

【摘要】采用聚砜中空纤维酶膜反应器系统 (截留分子量 2 0 0 0 0 ) ,运用α -淀粉酶酶解淀粉并及时分离 ,连续制备了DP8- 12 糊精。通过对酶膜反应器连续化工艺的二次回归正交组合试验 ,获得了该系统的二次模型 ,并确定了产品适宜的工艺参数范围 :流量为 5～ 15mL/s ;酶用量为 0 .6 0～ 0 .80u/g淀粉 ;淀粉浓度为 2 0 %～2 5 %更多还原

【Abstract】 A polysulphone hollow fiber membrane (molecular weight cut-off 20,000) enzymatic reactor was used to produce continuously DP 8-12 dextrin from starch by α-amylase.Through a quadratic-orthogonal experiment,a quadratic model for the system was established and satisfactory technological conditions of the system were detemined as followed:flow rate 5-15 ml/s dosage of amylase 0.60-0.80u/g starch,and concentration of starch 20%-25%.更多还原