Effect of chromium salts on invertase immobilization onto carboxymethylcellulose-gelatine carrier system

Date

1996-07-01

Author

Emregul, E
Sungur, S
Akbulut, Ural

Metadata

Show full item record

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

Item Usage Stats

28
views

0
downloads

The carboxymethylcellulose-gelatine carrier system was investigated for invertase immobilization. Chromium (III) acetate, chromium (III) sulphate and potassium chromium (III) sulphate were used as cross-linking agents. Effect of carboxymethylcellulose-gelatine ratio and cross-linker concentration on immobilized enzyme activity were analysed. Reusability of immobilized enzyme was also investigated. Maximum immobilized enzyme activities were obtained with cross-linkers chromium (III) sulphate (0.004 mol dm(-3)) and potassium chromium (III) sulphate (0.001 mol dm(-3)) for a carrier composition of carboxymethylcellulose-gelatine ratio 0.111 (w/w) as 78%. (C) 1996 Elsevier Science Limited

Subject Keywords

Gelatine, Carboxymethylcellulose, Invertase enzyme, Immobilization

URI

https://hdl.handle.net/11511/40419

Journal

BIOMATERIALS

DOI

https://doi.org/10.1016/0142-9612(96)87285-1

Collections

Department of Chemistry, Article

Suggestions

OpenMETU
Core

Effect of Terrestrial Laser Scanning (TLS) parameters on the accuracy of crack measurement in building materials Oytun, Mert; Atasoy Özcan, Güzide (2022-12-01) Terrestrial Laser Scanners (TLS) have gained momentum in identifying cracks and deformations. Although TLS efficiency has been recognized over time, the scan data quality is contingent upon various parameters (e.g., material type and scan settings), which impacts the use of TLS. To address this barrier, this study investigates the measurement accuracy in the context of crack analysis in foam board and common building materials (concrete, wood, and masonry) by conducting a set of controlled experiments with ...
A novel cyclodextrin homodimer with dual-mode substrate binding and esterase activity Tastan, P; Akkaya, EU (2000-06-20) A novel cyclodextrin homodimer with two beta-cyclodextrin units tethered from the primary side by a tris(2-aminoethyl)amine linker was found to be hydrolytically active. The hydrolysis of a ditopic activated carbonate ester was accelerated 150-fold and a Lineweaver-Burk plot showed a biphasic curve indicative of two different binding modes for the activated carbonate ester.
Detection of Unauthorized Photo-Voltaic System Connection for Low Voltage Grids Pouraltafi-Kheljan, Soheil; Göl, Murat (2020-01-01) Vast and unauthorized penetration of the photovoltaic systems in distribution systems imposed inadequate monitoring challenge to system operators. Although the installation of required monitoring infrastructure does seem as a solution, due to the high installation cost, it is not considered a feasible one, at least for the near future. As an alternative approach, a two-stage method composed of an ANN-based mapping function, and a regression model is presented to detect unauthorized PV connections to the sys...
Biodegradation of aldicarb in a packed-bed reactor by immobilized Methylosinus Kok, FN; Arica, MY; Halicigil, C; Alaeddinoglu, G; Hasırcı, Vasıf Nejat (1999-04-01) Carboxymethylcellulose microspheres cross-linked via aluminum ions were used as a support material for immobilization of Methylosinus isolated from soil contaminated with aldicarb. The degradation capacity of immobilized bacteria, different parameters such as substrate concentration (50-800 ppm), flow rate (10-60 ml h(-1)), and continuous contact with reaction medium (flow rate, 20 mi h(-1) and concentration, 100 ppm) that affect aldicarb degradation were investigated in a packed-bed reactor. Increases in t...
Classification of human motion using radar micro-doppler signatures with hidden markov models Padar, Mehmet Onur; Candan, Çağatay; Department of Electrical and Electronics Engineering (2016) The detection and classification of a moving person is one of the important missions of a ground surveillance radar. Classification information gives the opportunity of announcing a warning message on the suspicious activity of detected person. The studies show that radar micro-Doppler signatures can be used to obtain the needed features to make the classification of different types of human motions. In general, spectrograms of micro-Doppler signals obtained from human in motion are used to analyze the nece...

Citation Formats

E. Emregul, S. Sungur, and U. Akbulut, “Effect of chromium salts on invertase immobilization onto carboxymethylcellulose-gelatine carrier system,” BIOMATERIALS, pp. 1423–1427, 1996, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/40419.