文献类型：期刊文献

中文题名：干酪素水解产物的膜分离

英文题名：Application of Membrane Reactor to Casein Zymohydrolysis

作者：许学书[1];王宏[1];黄慧[1];廖湘海[1];张嗣良[1]

机构：[1]华东理工大学国家生化工程技术研究中心,上海200237

年份：2000

卷号：26

期号：4

起止页码：350

中文期刊名：华东理工大学学报（自然科学版）

外文期刊名：Journal of East China University of Science and Technology

收录：CSTPCD;;EI(收录号：2001015498557);Scopus;北大核心:【北大核心1996】；CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：膜分离;酶解;超滤;干酪素;水解产物;蛋白胨

外文关键词：membrane separation; zymohydrolysis;ultrafiltrate; casein

摘要：以干酪素酶解产物为介质对膜分离进行了研究。讨论了碱性和中性条件下膜分离过程中膜两侧浓度、流通量 ( J)和总氮截留率 ( σ)的变化。发现 p H值低污染度高 ,截留分子量大的膜污染度大。用 0 .1 mol/L的氢氧化钠和 5m L/L的 84消毒液浸泡洗涤可使膜的水通量恢复 94 %。在干酪素水解液的超滤中 ,阻力主要来自于凝胶层。凝胶层的阻力比膜阻力大 1至 2个数量级。
The membrane separation for casein zymohydrolysis was studied. The changes of concentrations on both sides of membrane under alkali and neutral conditions during the procedure were observed and discussed. The relationships between flux J and time t and between trapped ratios σ of total nitrogen and t for neutral and alkali conditions are: J 1=-3.192 3 ln t+9.627 9; σ 1=0.11+0.081 t; J 2= -0.375 4 ln t+4.509 3; σ 2=0.21-8.8×10 -6 t , respectively. The membrane contamination degree is larger at lower pH or higher MWCO membrane. The membrane flux can be recovered to reach 94% by soaking membrane in the solution of 0.1 mol/L NaOH and 5mL/L 84 disinfectant.The resistance of the gel layer is of 1 to 2 order higher than that of the membrane.The main resistance comes from the gel layer.