膜法浓缩明胶蛋白水溶液

Membrane technology in gelatin protein solution separation

在中型板式超滤 /纳滤器上 ,采用自制的荷负电膜进行了明胶蛋白水溶液的浓缩实验 ,探讨了一些因素对明胶蛋白的分离效果 ,确定了较合理的工艺参数 .实验结果表明 ,用自制的膜浓缩明胶蛋白是可行的 ,有望改进现行的明胶生产工艺 ,并建议采用下列参数 :膜的切割分子量为 5万 ,流速压差范围为 0 .0 6～ 0 .0 8MPa ,pH 8,操作压力为 0 .3MPa ,温度为 55℃ .

The main aspect of this paper is concentrated on the concentration of gelatin protein from its aqueous solution.The tests were conducted by a middle scale microfiltrator/nanofiltrator with a kind of negatively charged and crosslinked membrane manufactured in our lab.The appropriate operation conditions were obtained through these experimental results,such as 50 thousand for the cut molecule weight of the membrane, 0.06～ 0.08 MPa for flow pressure difference,8 for pH value,0.3 MPa for operating pressure and 55 ℃ for temperature.It is also demonstrated that the membrane method for the production of gelatin is feasible and this new technology is strongly recommended.