KINETIC AND THERMODYNAMIC BEHAVIORS OF SOIL UREASE AS AFFECTED BY UREASE INHIBITORS
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چکیده
منابع مشابه
Kinetic and Thermodynamic Behaviors of Soil Urease as Affected by Urease Inhibitors
The kinetic characteristics of soil urease have attracted great attention, but little information was available on its kinetic and thermodynamic behaviors as affected by urease inhibitors and temperature. With black soil (Pachic Udic Mollisol) in Heilongjiang Province of Northeast China as a test soil, an incubation test was conducted to investigate the effect of urease inhibitors (hydroquinone...
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With black soil (Pachic Udic Argiboroll) of Northeastern China as the test object, an incubation test was conducted to investigate the effects of urease inhibitors, hydroquinone (HQ), phenyl phosphorodiamidate (PPD) and N-(n-Butyl) thiophosphoric triamide (NBPT), on the kinetic characteristics of soil urease under normal moisture and waterlogged conditions, aimed to study the changes of catalyt...
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Urease inhibitors possess a wide application in agriculture, clinical science and understanding of enzyme kinetics. These inhibitors play a significant role in reducing the loss of nitrogen from urea fertilizer in the form of volatile ammonia and, thus, improve the utility of urea based fertilizers. Their impact as an effective drug against urease producing bacterial infection is well documente...
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In order to seek a urease inhibitor more potent than hydroxyurea (1), its alkyl- or phenyl-substituted derivatives were synthesized and evaluated for their effect on the jack bean urease. Of 16 compounds tested, m-methyl- (10) and m-methoxy-phenyl substituted hydroxyurea (13) showed the most potent inhibitory activities against the enzyme.
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The present study is concerned with the kinetics and thermodynamic study of urease extracted from soybeans. The effect of pH, temperature, concentration of substrate and incubation time on the urease activity was examined. Maximum urease activity (86.79 ± 2.43 U/g) was obtained at 30 o C and pH 8.0 after 60 sec of incubation. Kinetics constants i.e. Km and Vmax were estimated by using Lineweave...
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ژورنال
عنوان ژورنال: Revista de la ciencia del suelo y nutrición vegetal
سال: 2010
ISSN: 0718-2791
DOI: 10.4067/s0718-27912010000100001