Immobilized penicillin G acylase on mesoporous silica: The influence of pore size, pore volume and mesophases

2008 ◽  
Vol 114 (1-3) ◽  
pp. 507-510 ◽  
Author(s):  
Yongjun Lü ◽  
Yanglong Guo ◽  
Yanqin Wang ◽  
Xiaohui Liu ◽  
Yunsong Wang ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Pore Size ◽  
Pore Volume ◽  
Penicillin G Acylase ◽  
Penicillin G ◽  
Immobilized Penicillin G Acylase

A Novel Activity of Immobilized Penicillin G Acylase: Removal of Benzyloxycarbonyl Amino Protecting Group

2000 ◽  
Vol 18 (3) ◽  
pp. 253-258 ◽  
Author(s):  
Gregorio Alvaro ◽  
Josep A. Feliu ◽  
Gloria Caminal ◽  
Josep López-santín ◽  
Pere Clapés
Keyword(s):  
Penicillin G Acylase ◽  
Penicillin G ◽  
Protecting Group ◽  
Immobilized Penicillin G Acylase

Oriented Immobilization of Penicillin G Acylase on the Epoxydized Magnetic Hydroxyl Particles by Phenyl Acetic Acid

2012 ◽  
Vol 550-553 ◽  
pp. 1345-1351 ◽  
Author(s):  
Wei Wang ◽  
Zhong Hai Li ◽  
Ji Lie Li ◽  
Yao Hui Wu
Keyword(s):  
Enzyme Activity ◽  
Acetic Acid ◽  
Magnetic Particles ◽  
Suspension Polymerization ◽  
Reaction System ◽  
Fold Increase ◽  
Penicillin G Acylase ◽  
Penicillin G ◽  
Phenyl Acetic Acid ◽  
Immobilized Penicillin G Acylase

Magnetic hydroxyl microspheres were prepared by suspension polymerization and activated by epoxy chloropropane. The magnetic particles were characterized in terms of chemical composition, particle size and electrophoretic mobility. These epoxy-activated magnetic particles were assessed as a new carries for immobilized penicillin G acylase (PGA) by covalent coupling. The oriented PGA immobilization was achieved by employing the interaction electrostatic repulsion between PGA and magnetic supports through adding the phenyl acetic acid (PAA), which resulted in a 1.194-fold increase in the enzyme activity yield as compared to that of untreated PGA. No activity of immobilized PGA was lost after 20 cycles and about 94.28% enzyme activity was retained at the end of the 80th cycle in the batch reaction system.

scholarly journals Epoxidation of vinyl functionalized cubic Ia3d mesoporous silica for immobilization of penicillin G acylase

2014 ◽  
Vol 35 (10) ◽  
pp. 1709-1715 ◽  
Author(s):  
Wangcheng Zhan ◽  
Yongjun Lü ◽  
Ling Yang ◽  
Yanglong Guo ◽  
Yanqin Wang ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Penicillin G Acylase ◽  
Penicillin G

scholarly journals Sintesis Silika Mesopori Sba-15 Dari Abu Daun Jagung (Zea Mays L)

2017 ◽  
Vol 15 (1) ◽  
pp. 60
Author(s):  
Nasri Nasri ◽  
R R Dirgarini J. N Subagyono ◽  
Rahmat Gunawan
Keyword(s):  
Zea Mays ◽  
Mesoporous Silica ◽  
Pore Size ◽  
Pore Volume ◽  
Pore Diameter ◽  
Zea Mays L ◽  
Synthesis And Characterization ◽  
Template Method ◽  
Santa Barbara

The synthesis and characterization of  mesoporous silica Santa Barbara Acid-15 (SBA-15) from the ash of corn have been done.  SBA-15 was synthesised using the surfactant template method. SBA-15 from corn leaves  ash has a surface area of 592 m2 / gram, pore volume of 0.99 cm3 / gram and pore diameter of 3.95 nm with pore size ranging from 4.9 nm - 7.1 nm. The SAXS pattern of the bio-SBA-15 showed three typical peaks of SBA-15 with miller indices [100], [110] and [200]. In the FTIR spectrum of  SBA-15, peaks from Si-O-Si, Si-OH and H-O-H from water were observed.  

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