M Kozempel,M Kurantz
M Kozempel
A continuous reactor process was developed to produce lactulose from lactose. A system of two CSTRs in series with a tubular finishing reactor gave conversion to lactulose of about 76%. The reactors ran at 71-75 degrees C with a volumetric ...
Convenience of immobilized Bacillus licheniformis alpha-amylase as time-temperature-integrator (TTI) [0.03%]
固定化地衣芽孢杆菌α-淀粉酶作为时间-温度指示剂(TTI)的便利性研究
S F De Cordt,M E Hendrickx,G J Maesmans et al.
S F De Cordt et al.
For the immobilization of Bacillus licheniformis alpha-amylase to porous glass beads, the performances of three possible linking agents, glutaric dialdehyde, benzoquinone and s-trichlorotriazine were assessed in respect of the protein yield...
Physicochemical factors affecting the formation of the biological response modifier scleroglucan [0.03%]
影响生物反应调节剂束皮菌多糖形成的理化因素研究进展
S Taurhesia,B McNeil
S Taurhesia
The use of phosphate as the limiting nutrient for scleroglucan formation by Sclerotium glucanicum led to stimulation of glucan formation. Final exopolysaccharide concentrations achieved in phosphate-limited (18.9 kg m-3) cultures were much ...
J D Sheppard,P Marchessault,T Whalen et al.
J D Sheppard et al.
The operation of a cyclone bioreactor differs from conventional stirred tanks since the agitation is accomplished by means of a pumped recirculation loop. Oxygen transfer can occur across the swirling gas-liquid interface in the cyclone or ...
Purification and renaturation of recombinant human lymphotoxin (tumour necrosis factor beta) expressed in Escherichia coli as inclusion bodies [0.03%]
大肠杆菌表达的人重组白喉毒素β链纯化及复性研究
H Jin,M S Uddin,Y L Huang et al.
H Jin et al.
High level expression of recombinant human tumour necrosis factor beta (rhTNF-beta) in Escherichia coli results in the formation of two portions of protein, namely soluble active protein and insoluble protein which is inactive and aggregate...
Immobilization of hydrophobic lipase derivatives on to organic polymer beads [0.03%]
疏水性脂酶衍生物固定在有机聚合物珠上
M Basri,K Ampon,W M Yunus et al.
M Basri et al.
A simple and effective method of lipase immobilization is described. Lipase from Candida rugosa was first modified with several hydrophobic modifiers before being adsorbed on to organic polymer beads. The soluble hydrophobic lipase derivati...
H I Miller,M A Tart,T S Bozzo
H I Miller
Potentiometric determination of ephedrine hydrochloride using plastic membrane ion-selective electrode [0.03%]
采用选择性离子交换膜电极测定盐酸麻黄碱的电位法
M M Zareh,Y M Issa,A F Shoukry et al.
M M Zareh et al.
A plastic membrane electrode based on phenylephrine-tetraphenylborate ion association shows a Nernstian response to both ephedrinium (Ep+) and silver (Ag+) cations over the concentration ranges 2 x 10(-5)-10(-1) M and 10(-5)-10(-1) M for Ep...
Y Chisti,M Moo-Young
Y Chisti
The overall apparent volumetric gas-liquid mass transfer coefficient (kLa) and the mixing time (t95) were determined in a 240 dm3 vortex aerated fermenter over stirrer speed and air flow ranges of 300-800 rpm and 10-45 normal dm3 min-1, res...