Results 21 to 30 of about 59,957 (280)

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

Synergistic antifungal interaction of N-(butylcarbamothioyl) benzamide and amphotericin B against Cryptococcus neoformans

open access: yesFrontiers in Microbiology, 2023
IntroductionCryptococcus neoformans is one of the leading causes of invasive fungal infections worldwide. Cryptococcal meningoencephalitis is the main challenge of antifungal therapy due to high morbidity and mortality rates, especially in low- and ...
Gabriella Maria Andriani   +25 more
doaj   +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

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

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

Role of ureolytic activity in Bacillus cereus nitrogen metabolism and acid survival [PDF]

open access: yes, 2008
The presence and activities of urease genes were investigated in 49 clinical, food, and environmental Bacillus cereus isolates. Ten strains were shown to have urease genes, with eight of these strains showing growth on urea as the sole nitrogen source ...
Abee, T., Mols, J.M.
core   +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

UREASE. [PDF]

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

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