Covalent immobilization of penicillin G acylase onto chemically activated surface of poly(vinyl chloride) membranes for 6-penicillic acid production from penicillin hydrolysis process I. Optimization of surface modification and its characterization

2011 ◽  
Vol 124 (S1) ◽  
pp. E27-E36 ◽  
Author(s):  
M. S. Mohy Eldin ◽  
H. A. El Enshasy ◽  
M. El Sayed ◽  
S. El Sayed ◽  
B. Haroun ◽  
...  
Keyword(s):  
Surface Modification ◽  
Vinyl Chloride ◽  
Acid Production ◽  
Covalent Immobilization ◽  
Penicillin G Acylase ◽  
Penicillin G ◽  
Penicillic Acid ◽  
Poly Vinyl Chloride ◽  
Hydrolysis Process ◽  
Activated Surface

Riboflavin Surface Modification of Poly(vinyl chloride) for Light-Triggered Control of Bacterial Biofilm and Virus Inactivation

2021 ◽  
Author(s):  
Marcelo Munoz ◽  
Antony El-khoury ◽  
Cagla Eren Cimenci ◽  
Mayte Gonzalez-Gomez ◽  
Robert A. Hunter ◽  
...  
Keyword(s):  
Surface Modification ◽  
Vinyl Chloride ◽  
Bacterial Biofilm ◽  
Virus Inactivation ◽  
Poly Vinyl Chloride

Surface modification of medical poly(vinyl chloride) with O−water

2008 ◽  
Vol 110 (1) ◽  
pp. 39-48 ◽  
Author(s):  
E Zhao ◽  
Lian Wang ◽  
Lifeng Yan ◽  
Yoshifumi Torimoto ◽  
Quanxin Li
Keyword(s):  
Surface Modification ◽  
Vinyl Chloride ◽  
Poly Vinyl Chloride

Stabilization of heterodimeric enzyme by multipoint covalent immobilization: Penicillin G acylase fromKluyvera citrophila

1993 ◽  
Vol 42 (4) ◽  
pp. 455-464 ◽  
Author(s):  
José M. Guisán ◽  
Gregorio Alvaro ◽  
Roberto Fernandez-Lafuente ◽  
Cristina M. Rosell ◽  
Jose L. Garcia ◽  
...  
Keyword(s):  
Covalent Immobilization ◽  
Penicillin G Acylase ◽  
Penicillin G

Hydrophilic surface modification of poly(vinyl chloride) film and tubing using physisorbed free radical grafting technique

Polymer ◽  
2008 ◽  
Vol 49 (20) ◽  
pp. 4350-4357 ◽  
Author(s):  
Kathryn M. McGinty ◽  
William J. Brittain
Keyword(s):  
Surface Modification ◽  
Free Radical ◽  
Vinyl Chloride ◽  
Hydrophilic Surface ◽  
Poly Vinyl Chloride ◽  
Grafting Technique ◽  
Chloride Film

A novel surface modification for calcium sulfate whisker used for reinforcement of poly(vinyl chloride)

2015 ◽  
Vol 22 (9) ◽  
Author(s):  
Wenjin Yuan ◽  
Jiayang Cui ◽  
Yangben Cai ◽  
Shiai Xu
Keyword(s):  
Surface Modification ◽  
Vinyl Chloride ◽  
Calcium Sulfate ◽  
Poly Vinyl Chloride ◽  
Calcium Sulfate Whisker

Grafted Carrageenan Gel Disks and Beads with Polyethylenimine and Glutaraldehyde for Covalent Immobilization of Penicillin G Acylase

2013 ◽  
Vol 2 (1) ◽  
pp. 27-33 ◽  
Author(s):  
Magdy M. M. Elnashar ◽  
Mohamed E. Hassan ◽  
Ghada E. A. Awad
Keyword(s):  
Covalent Immobilization ◽  
Penicillin G Acylase ◽  
Penicillin G

Immobilization of modified penicillin G acylase on Sepabeads carriers

2009 ◽  
Vol 63 (2) ◽  
Author(s):  
Milena Žuža ◽  
Nenad Milosavić ◽  
Zorica Knežević-Jugović
Keyword(s):  
Thermal Stability ◽  
Hydrolytic Activity ◽  
Covalent Immobilization ◽  
Stability Study ◽  
Penicillin G Acylase ◽  
Penicillin G ◽  
Chemically Modified ◽  
Modified Enzyme ◽  
Derivatives Of ◽  
Thermal Stability Study

AbstractAn approach to stable covalent immobilization of chemically modified penicillin G acylase from Escherichia coli on Sepabeads® carriers with high retention of hydrolytic activity and thermal stability is presented. The two amino-activated polymethacrylate particulate polymers with different spacer lengths used in the study were Sepabeads® EC EA and Sepabeads® EC HA. The enzyme was first modified by cross-linking with polyaldehyde derivatives of starch in order to provide it with new useful functions. Such modified enzyme was then covalently immobilized on amino supports. The method seems to provide a possibility to couple the enzyme without risking a reaction at the active site which might cause the loss of activity. Performances of these immobilized biocatalysts were compared with those obtained by the conventional method with respect to activity and thermal stability. The thermal stability study shows that starch-PGA immobilized on Sepabeads EC-EA was almost 4.5-fold more stable than the conventionally immobilized one and 7-fold more stable than free non-modified PGA. Similarly, starch-PGA immobilized on Sepabeads EC-HA was around 1.5- fold more stable than the conventionally immobilized one and almost 9.5-fold more stable than free non-modified enzyme.

scholarly journals Surface Modification of Poly (vinyl chloride) Coated Steel Sheet by Electron Beam Induced Graft-Polymerization

1991 ◽  
Vol 77 (7) ◽  
pp. 1095-1102
Author(s):  
Koji MORI ◽  
Kenji KOSHIISHI ◽  
Ken-ichi MASUHARA
Keyword(s):  
Surface Modification ◽  
Electron Beam ◽  
Vinyl Chloride ◽  
Steel Sheet ◽  
Graft Polymerization ◽  
Coated Steel ◽  
Poly Vinyl Chloride ◽  
Coated Steel Sheet
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