scholarly journals Peroxidase-Like Catalytic Activity of Anion-Exchange Resins Modified with Metal-Porphyrins in Oxidative Reaction of Hetrocyclic Amines with Hydrogen Peroxide

2005 ◽  
Vol 53 (8) ◽  
pp. 1006-1010 ◽  
Author(s):  
Masaki Mifune ◽  
Daiki Hino ◽  
Hikaru Sugita ◽  
Akimasa Iwado ◽  
Youji Kitamura ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Catalytic Activity ◽  
Anion Exchange ◽  
Oxidative Reaction ◽  
Metal Porphyrins ◽  
Anion Exchange Resins ◽  
Exchange Resins

scholarly journals The Catalytic Activity of Glass Beads, Silica Gels and Anion-Exchange Resins Modified with Metal-Porphines in the Oxidative Reaction of NADH.

1999 ◽  
Vol 47 (9) ◽  
pp. 1301-1304 ◽  
Author(s):  
Akimasa IWADO ◽  
Masaki MUFUNE ◽  
Rumiko HARADA ◽  
Junko ODA ◽  
Noriko MOTOHASHI ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Anion Exchange ◽  
Glass Beads ◽  
Silica Gels ◽  
Oxidative Reaction ◽  
Anion Exchange Resins ◽  
Exchange Resins

A catalytic activity of glass beads, silica gels and anion-exchange resins modified with metal-porphines in oxidative reactions of ascorbic acid

1998 ◽  
Vol 283 (1) ◽  
pp. 44-50 ◽  
Author(s):  
Akimasa Iwado ◽  
Masaki Mifune ◽  
Rumiko Harada (Nee Noguchi) ◽  
Hiromichi Akizawa ◽  
Noriko Motohashi ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Catalytic Activity ◽  
Anion Exchange ◽  
Glass Beads ◽  
Silica Gels ◽  
Anion Exchange Resins ◽  
Oxidative Reactions ◽  
Exchange Resins

scholarly journals Catalytic Activity of Anion-Exchange Resins Modified with Metal-Porphine in Oxidative Reactions of Phenols.

2000 ◽  
Vol 48 (11) ◽  
pp. 1831-1832 ◽  
Author(s):  
Akimasa IWADO ◽  
Masaki MIFUNE ◽  
Jiro KATO ◽  
Junko ODA ◽  
Masahiko CHIKUMA ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Anion Exchange ◽  
Anion Exchange Resins ◽  
Oxidative Reactions ◽  
Exchange Resins

Removal of Hydrophobic and Hydrophilic Constituents by Anion Exchange Resin

1999 ◽  
Vol 40 (9) ◽  
pp. 207-214 ◽  
Author(s):  
J.-P. Croué ◽  
D. Violleau ◽  
C. Bodaire ◽  
B. Legube
Keyword(s):  
Molecular Weight ◽  
Anion Exchange ◽  
Water Source ◽  
Atomic Ratio ◽  
Size Exclusion ◽  
Salting Out ◽  
Anion Exchange Resins ◽  
Hydrophilic Character ◽  
Exchange Resins

The objective of this work was to compare the affinity of well characterized NOM fractions isolated from two surface waters with strong (gel matrix and macroporous matrix) and weak anion exchange resins (AER) using batch experiment conditions. The structural characterization of the fraction of NOM has shown that the higher the hydrophilic character, the lower the C/O atomic ratio, the lower the SUVA, the lower the aromatic carbon content and the lower the molecular weight. In general (not always), strong AER was more efficient to remove DOC than weak AER. For the same water source (Suwannee River), the higher the molecular weight of the NOM fraction, the lower the affinity with AER. Increasing the ionic strength favored the removal of the hydrophobic NOM fraction (“salting out” effect) while increasing the pH apparently reduced the removal of the hydrophilic NOM fraction. Results were discussed in terms of size exclusion, adsorption, anion exchange and also hydrophobic/hydrophilic repulsion.

scholarly journals Impact of anion exchange adsorbents on regional citrate anticoagulation

2020 ◽  
pp. 039139882094773
Author(s):  
Karin Strobl ◽  
Stephan Harm ◽  
Ute Fichtinger ◽  
Claudia Schildböck ◽  
Jens Hartmann
Keyword(s):  
Anion Exchange ◽  
Regional Citrate Anticoagulation ◽  
Liver Support ◽  
Anion Exchange Resins ◽  
Increased Risk ◽  
Extracorporeal Liver Support ◽  
Target Molecules ◽  
Exchange Resins ◽  
The Impact

Introduction: Heparin and citrate are commonly used anticoagulants in membrane/adsorption based extracorporeal liver support systems. However, anion exchange resins employed for the removal of negatively charged target molecules including bilirubin may also deplete these anticoagulants due to their negative charge. The aim of this study was to evaluate the adsorption of citrate by anion exchange resins and the impact on extracorporeal Ca2+ concentrations. Methods: Liver support treatments were simulated in vitro. Citrate and Ca2+ concentrations were measured pre and post albumin filter as well as pre and post adsorbents. In addition, batch experiments were performed to quantify citrate adsorption. Results: Pre albumin filter target Ca2+ concentrations were reached well with only minor deviations. Citrate was adsorbed by anion exchange resins, resulting in a higher Ca2+ concentration downstream of the adsorbent cartridges during the first hour of treatment. Conclusions: The anion exchange resin depletes citrate, leading to an increased Ca2+ concentration in the extracorporeal circuit, which may cause an increased risk of clotting during the first hour of treatment. An increase of citrate infusion during the first hour of treatment should therefore be considered to compensate for the adsorption of citrate.

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