scholarly journals Membrane functionalization using bisamide‐based organic frameworks for molecular weight cutoff reduction

2019 ◽  
Vol 137 (5) ◽  
pp. 48327 ◽  
Author(s):  
Priyesh Wagh ◽  
John Spencer ◽  
Brandon Steele ◽  
Isabel C. Escobar
Keyword(s):  
Molecular Weight ◽  
Molecular Weight Cutoff ◽  
Membrane Functionalization

Concentration and purification of rubella virus hemagglutinin by hollow fiber ultrafiltration and sucrose density centrifugation

1980 ◽  
Vol 26 (11) ◽  
pp. 1334-1339 ◽  
Author(s):  
M. Trudel ◽  
P. Payment
Keyword(s):  
Molecular Weight ◽  
Tissue Culture ◽  
Vero Cell ◽  
Hollow Fiber ◽  
Rubella Virus ◽  
Specific Activity ◽  
Sucrose Density Gradient ◽  
Hollow Fibers ◽  
Cell Monolayers ◽  
Molecular Weight Cutoff

Large volumes of rubella virus were produced in Vero cell monolayers which were grown in the Corbeil-Bellco TM system. Infectious tissue culture fluids were concentrated at least 600 times in less than 4 h by ultrafiltration on hollow fibers with a molecular weight cutoff of 100 000. Recovery of the hemagglutinating activity was 75%. Rubella virus was purified by three successive sucrose density gradient centrifugations using a combination of discontinuous and linear gradients. Specific activity was increased 1000-fold.

Effects of Membrane Molecular Weight Cutoff on Performance of a Novel Bioartificial Liver

2011 ◽  
Vol 35 (3) ◽  
pp. E40-E46 ◽  
Author(s):  
Xiao-lei Shi ◽  
Yue Zhang ◽  
Bing Han ◽  
Jin-yang Gu ◽  
Xue-hui Chu ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Bioartificial Liver ◽  
Molecular Weight Cutoff

Membrane Fouling and Molecular Weight Cutoff Effects on the Partitioning of Pectinesterase

1996 ◽  
Vol 44 (8) ◽  
pp. 2091-2095 ◽  
Author(s):  
Rami Snir ◽  
Louise Wicker ◽  
Phillip E. Koehler ◽  
Kevin A. Sims
Keyword(s):  
Molecular Weight ◽  
Membrane Fouling ◽  
Molecular Weight Cutoff

A novel filtration system for polyethylene glycol solutions used in the osmotic method of controlling suction

2008 ◽  
Vol 45 (3) ◽  
pp. 421-424 ◽  
Author(s):  
Pierre Delage ◽  
Yu Jun Cui
Keyword(s):  
Molecular Weight ◽  
Polyethylene Glycol ◽  
Small Molecules ◽  
Opposite Direction ◽  
Semipermeable Membrane ◽  
Peg 6000 ◽  
Molecular Weight Cutoff ◽  
Filtration System ◽  
Purification System ◽  
Exchange Surface

One of the problems encountered when using the osmotic technique of controlling suction is related to the possible crossing of polyethylene glycol (PEG) molecules through the semipermeable membrane. Of the various hypotheses proposed, the paper considers the hypothesis that the PEG solutions are not pure enough and have molecules that are small enough to cross the semipermeable membrane. The paper presents a novel PEG purification system in which two solutions at different concentrations are put in contact through a semipermeable membrane along a large exchange surface. A peculiarity of the system is that it creates two opposite fluxes through the membrane, where small PEG molecules go from the higher concentration solution towards the lower concentration solution, and water migrates in the opposite direction. It has been observed that a small quantity of small molecules of PEG 6000 crossed the molecular weight cutoff (MWCO) 3500 semipermeable membrane.

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