Results 21 to 30 of about 1,001,507 (301)

Hydrophobic adsorption and covalent immobilization of Candida antarctica lipase B on mixed-function-grafted silica gel supports for continuous-flow biotransformations [PDF]

open access: yes, 2013
Adsorption onto solid supports has proven to be an easy and effective way to improve the mechanical and catalytic properties of lipases. Covalent binding of lipases onto the support surface enhances the active lifetime of the immobilized biocatalysts ...
Poppe, László   +8 more
core   +1 more source

Covalent immobilization of glucoamylase enzyme onto chemically activated surface of κ-carrageenan

open access: yesBulletin of the National Research Centre, 2019
Background Glucoamylase enzyme is one of the most important enzymes. It catalyzes the hydrolysis of starch into soluble sugars. It was covalently immobilized onto κ-carrageenan gel beads after activation by using polyethylenimine (PEI) followed by ...
Mohamed E. Hassan   +2 more
doaj   +1 more source

Characterization of immobilized β-galactosidase from Aspergillus niger [PDF]

open access: yesDelta Journal of Science, 2013
β-galactosidase enzyme was isolated from Aspergillus niger, and immobilized in sodiumalginate gel. The maximum activity of the free enzyme was obtained at 65oC, pH 3.5 and its notaffected by immobilization. The free enzyme had pH stability range from 3.5
Karzan T. Mahmood, Waleed A. Mahmood
doaj   +1 more source

High level expression of nicotinamide nucleoside kinase from Saccharomyces cerevisiae and its purification and immobilization by one-step method

open access: yesFrontiers in Bioengineering and Biotechnology, 2023
Nicotinamide riboside kinase (NRK) plays an important role in the synthesis of β -nicotinamide nucleotide (NMN). NMN is a key intermediate of NAD+ synthesis, and it actually contribute to the well-being of our health.
Jian-Ju He   +14 more
doaj   +1 more source

Enzyme activity and flexibility at very low hydration [PDF]

open access: yes, 2005
Recent measurements have demonstrated enzyme activity at hydrations as low as 3%. This raises the question of whether hydration-induced enzyme flexibility is important for activity. Here, to address this, picosecond dynamic neutron scattering experiments
Kurkal, V.   +9 more
core   +1 more source

Evaluation of fungal laccase immobilized on natural nanostructured bacterial cellulose

open access: yesFrontiers in Microbiology, 2015
The aim of this work was to assess the possibility of using native bacterial nanocellulose (BC) as a carrier for laccase immobilization. BC was synthesized by Gluconacetobacter xylinus, which was statically cultivated in a mannitol-based medium and was ...
Lin eChen   +4 more
doaj   +1 more source

A comparative study of enzyme immobilization strategies for multi-walled carbon nanotube glucose biosensors [PDF]

open access: yes, 2011
This work addresses the comparison of different strategies for improving biosensor performance using nanomaterials. Glucose biosensors based on commonly applied enzyme immobilization approaches, including sol-gel encapsulation approaches and ...
Claussen, Jonathan C.   +17 more
core   +1 more source

Performance of immobilized bacterial alpha-amylases in methyltriethoxsilane / tetraetoxysilane sol-gel matrices [PDF]

open access: yes, 2007
The large number of studies related to the field of biomolecules encapsulation in sol-gel hosts clearly indicates that this approach can be considered as a powerful alternative to traditional encapsulation procedures involving biopolymer hosts.
VLAD-OROS, BEATRICE   +2 more
core   +2 more sources

The Enzymatic Decolorization of Textile Dyes by the Immobilized Polyphenol Oxidase from Quince Leaves

open access: yesThe Scientific World Journal, 2014
Water pollution due to release of industrial wastewater has already become a serious problem in almost every industry using dyes to color its products.
Gulnur Arabaci, Ayse Usluoglu
doaj   +1 more source

N-Acetylglucosamine Production by Repeated-Batch Fermentation Using Immobilized Semi-Purified Chitinase Enzyme on Agar

open access: yesReaktor, 2021
Chitinolytic mold, such as Mucor circinelloidesis can be utilized to produce chitinase enzyme for shrimp shell’s chitin hydrolysis into N-acetylglucosamine (NAG).
Lucia Soedirga   +2 more
doaj   +1 more source

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