Results 21 to 30 of about 54,144 (194)

Urease-Immobilized PEI Cryogels for the Enzymatic Hydrolysis of Urea and Carbon Dioxide Uptake

open access: yes, 2022
Here, the immobilization of the urease enzyme within polyethyleneimine (PEI) cryogels (Urease@PEI cryogel) is reported during the synthesis via the entrapment method. The immobilization yield of the enzymes within PEI cryogels was determined as >85%, and
Nurettin Sahiner (3624755)   +3 more
core   +1 more source

Extraction, precipitation and characterization of urease from Vicia faba L.

open access: yesAl-Mustansiriyah Journal of Science, 2020
This study aimed to extract urease enzyme from available plant source which was broad beans (Vicia faba L.) using aqueous solution in a ratio1:3(w:v) .The crude extract appeared enzyme activity 33.3 U/ml. Results of this study revealed the possibility to
Dalal Subree Bedan
doaj   +1 more source

Novel Approach to Organic Mulching from Natural-Based Solutions to Enhance Soil Health and Functional Value of Calafate Fruit

open access: yesHorticulturae, 2023
Mulching suppresses weeds, improves soil biology, and increases physical or bioactive fruit yield in fruit orchards. However, there is no information on its impact on calafate (Berberis microphylla G.
Matías Betancur   +4 more
doaj   +1 more source

Expression of urease by Haemophilus influenzae during human respiratory tract infection and role in survival in an acid environment

open access: yesBMC Microbiology, 2011
Background Nontypeable Haemophilus influenzae is a common cause of otitis media in children and lower respiratory tract infection in adults with chronic obstructive pulmonary disease (COPD). Prior studies have shown that H.
Murphy Timothy F, Brauer Aimee L
doaj   +1 more source

Evaluation of purified urease activity from Proteus mirabilis using iron oxide nanoparticles and measurement of urea concentration in blood [PDF]

open access: yesEngineering and Technology Journal, 2018
The activity of urease purified from Proteus mirabilis bacteria wasestimated using gamma iron oxide nanoparticles (γ-Fe2O3) which were obtained asstandard in size (20- 40)nm, purity 99%. The enzyme activity was estimated byincubating the pure enzyme with
Hadeel Dawud, Entesar Ali
doaj   +1 more source

Systematic re-evaluation of the long-used standard protocol of urease-dependent metabolome sample preparation.

open access: yesPLoS ONE, 2020
In the urinary metabolomics for finding biomarkers in urine, owing to high concentrations of urea, for chromatography-based metabolomic analysis, urea needed to be degraded by urease.
Jungyeon Kim   +5 more
doaj   +1 more source

A Novel Immobilization Method of Urease in Silk Fibroin Scaffolds by Annealing at Constant Temperature and Humidity

open access: yesMacromolecular Materials and Engineering, 2023
Temperature and humidity (TH) post‐treatment is a relatively mild way to change the silk fibroin (SF) secondary structure. Here, urease is immobilized in SF scaffold (SFS) by TH post‐treatment, and the effects of annealing on the immobilized urease ...
Xiao‐Qin Qian   +5 more
doaj   +1 more source

UREASE. [PDF]

open access: yesThe Lancet, 1916
n ...
openaire   +2 more sources

THE ACTIVATION OF UREASE [PDF]

open access: yesJournal of General Physiology, 1949
1. It has been shown that the activity of solutions of twice recrystallized urease is reversibly increased by moderate heating and reversibly decreased by storage in the cold, even in the frozen state. 2. Crude extracts of jack bean meal containing potent urease undergo this same type of reversible activation by heating and inactivation ...
openaire   +2 more sources

RovM and CsrA Negatively Regulate Urease Expression in Yersinia pseudotuberculosis

open access: yesFrontiers in Microbiology, 2018
Urease acts as an important acid resistance system and virulence factor that is widespread among microorganisms. RovM is a global regulator that regulates a series of genes and pathways including acid survival systems in the enteric bacterium Yersinia ...
Qingyun Dai   +10 more
doaj   +1 more source

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