POLYESTER FILM STRIPS COATED WITH PHOTOGRAPHIC GELATIN CONTAINING IMMOBILIZED INVERTASE

Date

1991-01-01

Author

Akbulut, Ural
PEKYARDIMCI, S

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

138
views

0
downloads

Invertase was immobilized into photographic gelatin by chemical crosslinking with formaldehyde and chromium (III) acetate. Polyester film strips were coated with invertase-gelatin mixture which increased durability during consecutive immersions into reaction media. The effect of gelatin, crosslinker and enzyme concentrations on activity were studied. Enzyme leakages from immobilized invertase film strips were controlled by washing with EDTA solutions. The activities of washing solutions were measured spectrophotometrically to determine unbounded enzyme concentration. Effect of use number on activity was also determined. Percent activity of immobilized invertase was lower than that of free enzyme. The activity however retained even after 10 washings (170 minutes) followed by 9 use in 18 weeks.

Subject Keywords

General Engineering

URI

https://hdl.handle.net/11511/35375

Journal

JOURNAL OF MACROMOLECULAR SCIENCE-CHEMISTRY

DOI

https://doi.org/10.1080/00222339108054406

Collections

Department of Chemistry, Article

Suggestions

OpenMETU
Core

ELECTROINITIATED POLYMERIZATION OF ACROLEIN BY DIRECT AND INDIRECT ELECTRON-TRANSFER VIA CONTROLLED POTENTIAL ELECTROLYSIS Toppare, Levent Kamil; Akbulut, Ural (Informa UK Limited, 1990-01-01) Electroinitiated polymerization of acrolein has been achieved by controlled potential electrolysis at the reduction peak potential of the monomer for direct electron transfer. Kinetics and type of mechanism of the polymerization have been investigated. the structure of the polymer has also been examined by IR spectroscopy. in a separate experiment, a small amount of CCI4 was added to a polymerization system. Since the reduction peak potential of CCI4 appears at a more anodic region than that of acrolein on ...
POLYMERIZATION OF MALEIC-ANHYDRIDE INITIATED BY IMIDAZOLE HACIOGLU, B; Akbulut, Ural (Informa UK Limited, 1991-01-01) Imidazole was employed as an anionic initiator for the homopolymerization of maleic anhydride in various solvents. Polymerization was very rapid and the obtained products have different colours varying from white to dark brown. The colour of the product was found to depend on the quantity of imidazole added, and the solvent of polymerization. Darkness of polymers are thought to be due to cross-conjugation displaying paramagnetic character. The ESR signals of dark brown polymers were more intense than th...
Green synthesis of silver nanoparticles: biomolecule-nanoparticle organizations targeting antimicrobial activity Roy, Anupam; Bulut, Onur; Some, Sudip; Mandal, Amit Kumar; Yilmaz, M. Deniz (Royal Society of Chemistry (RSC), 2019-01-23) Since discovery of the first antibiotic drug, penicillin, in 1928, a variety of antibiotic and antimicrobial agents have been developed and used for both human therapy and industrial applications. However, excess and uncontrolled use of antibiotic agents has caused a significant growth in the number of drug resistant pathogens. Novel therapeutic approaches replacing the inefficient antibiotics are in high demand to overcome increasing microbial multidrug resistance. In the recent years, ongoing research has...
Photocatalytic microbial inactivation over Pd doped SnO2 and TiO2 thin films ERKAN, Arcan; BAKIR, Ufuk; Karakaş, Gürkan (Elsevier BV, 2006-12-15) The photocatalytic antimicrobial activity over TiO2, SnO2 and their Pd doped thin film samples were determined against Escherichia coli, Staphylococcus aereus, Saccharomyces cerevisiae and Aspergilus niger spores. Higher antimicrobial activity was observed with TiO2 than SnO2 thin films and, Pd addition contributes to an increase in the activity of both semiconductor oxides. The highest microbial inactivation was achieved with 1% PdO/TiO2 against E. coli with a 98% decrease in survival after 2 h illuminatio...
ELECTROINITIATED POLYMERIZATION OF ACRYLONITRILE YURTTAS, B; Toppare, Levent Kamil; Akbulut, Ural (Informa UK Limited, 1988-01-01) Anionic polymerization of acrylonitrile was achieved by constant-potential electrolysis via direct electron transfer to the monomer. The reduction peak potential in the (C4 H9)4 NBF4 -CH3 CN electrolyte-solvent system was measured by cyclic voltammetry. On the other hand, dimethylformamide-metal salts were not found suitable for the direct electron-transfer process in our system. Polymers produced both anodically and cathodically were found to contain cyclized structures.

Citation Formats

U. Akbulut and S. PEKYARDIMCI, “POLYESTER FILM STRIPS COATED WITH PHOTOGRAPHIC GELATIN CONTAINING IMMOBILIZED INVERTASE,” JOURNAL OF MACROMOLECULAR SCIENCE-CHEMISTRY, pp. 239–247, 1991, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/35375.