scholarly journals Hydrolytic enzyme activity enhanced by Barium supplementation

2016 ◽  
Vol 2 (4) ◽  
pp. 402-411 ◽  
Author(s):  
Camilo Muñoz ◽  
◽  
Fernando G. Fermoso ◽  
Mariella Rivas ◽  
Juan M. Gonzalez
Keyword(s):  
Enzyme Activity ◽  
Hydrolytic Enzyme

Evidence for microbial attenuation of particle flux in the Amundsen Gulf and Beaufort Sea: elevated hydrolytic enzyme activity on sinking aggregates

Polar Biology ◽  
2011 ◽  
Vol 34 (12) ◽  
pp. 2007-2023 ◽  
Author(s):  
Colleen T. E. Kellogg ◽  
Shelly D. Carpenter ◽  
Alisha A. Renfro ◽  
Amélie Sallon ◽  
Christine Michel ◽  
...  
Keyword(s):  
Enzyme Activity ◽  
Particle Flux ◽  
Hydrolytic Enzyme ◽  
Beaufort Sea ◽  
Amundsen Gulf

Resonant Sensors for Low-Cost, Contact-Free Measurement of Hydrolytic Enzyme Activity in Closed Systems

ACS Sensors ◽  
2018 ◽  
Vol 3 (8) ◽  
pp. 1489-1498 ◽  
Author(s):  
Sadaf Charkhabi ◽  
Andee M. Beierle ◽  
Marshall D. McDaniel ◽  
Nigel F. Reuel
Keyword(s):  
Enzyme Activity ◽  
Low Cost ◽  
Hydrolytic Enzyme ◽  
Resonant Sensors ◽  
Closed Systems ◽  
Contact Free

Self-immolative versatile fluorogenic probes for screening of hydrolytic enzyme activity

2016 ◽  
Vol 14 (38) ◽  
pp. 9146-9150 ◽  
Author(s):  
Anna Żądło-Dobrowolska ◽  
Martyna Szczygieł ◽  
Dominik Koszelewski ◽  
Daniel Paprocki ◽  
Ryszard Ostaszewski
Keyword(s):  
Enzyme Activity ◽  
Hydrolytic Enzyme ◽  
Cascade Reaction ◽  
Enzymatic Cleavage ◽  
Enzyme Screening ◽  
Fluorogenic Probes

Self-immolative probes for rapid and sensitive hydrolase detection are reported. This system allows hydrolytic enzyme screening through a cascade reaction triggered by enzymatic cleavage.

Flavine, Oxidative and Hydrolytic Enzyme Activity in the Skin of Sana, Togemburg and Balkan Engrafted Kid Breeds

1994 ◽  
Vol 23 (2) ◽  
pp. 112-119
Author(s):  
D. Mihelić ◽  
A. Hraste ◽  
K. Babić ◽  
Vesna Gjurčević-Kantura ◽  
Z. Janicki
Keyword(s):  
Enzyme Activity ◽  
Hydrolytic Enzyme

Comparison of hydrolytic enzyme systems in pure culture and activated sludge under different electron acceptor conditions

1998 ◽  
Vol 37 (4-5) ◽  
pp. 335-343 ◽  
Author(s):  
Rajeev Goel ◽  
Takashi Mino ◽  
Hiroyasu Satoh ◽  
Tomonori Matsuo
Keyword(s):  
Enzyme Activity ◽  
Activated Sludge ◽  
Electron Acceptor ◽  
Bacillus Amyloliquefaciens ◽  
Enzyme System ◽  
Weak Link ◽  
Batch Reactor ◽  
Hydrolytic Enzyme ◽  
Hydrolytic Enzymes ◽  
Pure Cultures

Enzymatic hydrolysis under different electron acceptor conditions in nutrient removal activated sludge treatment processes is a weak link in the Activated Sludge Model no. 2 (Henze et al., 1995). An experimental study was undertaken to gain insight into the hydrolysis process with specific focus on hydrolysis kinetics and rates under different electron acceptor conditions. Two pure cultures, Bacillus amyloliquefaciens (Gram positive) and Pseudomonas saccharophila (Gram negative) were chosen for the study. In addition, activated sludge grown in an anaerobic-aerobic system was tested for enzymatic activity using starch as the model substrate. The hydrolytic enzymes were found to be released into the bulk in pure cultures whereas the enzyme activity was found to be mainly associated with the cell surfaces in activated sludge. Further, it was observed that the development of the hydrolytic enzyme system in Bacillus amyloliquefaciens and P. saccharophila is strongly suppressed under anoxic and anaerobic conditions. However, the effect of anaerobic and aerobic incubation on hydrolytic enzyme activity in activated sludge was found to be small. Starch hydrolysis kinetic data from batch experiments with activated sludge followed substrate saturation kinetics that were linear with biomass concentration. Finally, the similar hydrolytic enzyme activities observed under anaerobic and aerobic phases of a sequencing batch reactor are explained by considering the aspects of enzyme location and enzyme system development under aerobic and anaerobic phases. It is proposed that the floc bound enzymes are recycled in a single sludge system so that an equilibrium exists between enzyme loss and synthesis at steady state.

Determination off succinylcholine hydrolytic enzyme activity in human plasma

1990 ◽  
Vol 183 (4) ◽  
pp. 1373
Author(s):  
Y. Ikarashi ◽  
T. Hada ◽  
K. Itoh ◽  
E.L. Way ◽  
Y. Maruyama
Keyword(s):  
Enzyme Activity ◽  
Human Plasma ◽  
Hydrolytic Enzyme

scholarly journals Ecological features of enzyme activity distribution in edaphotops of technogenic landscapes

2018 ◽  
Vol 29 (2) ◽  
Author(s):  
V. I. Chorna ◽  
I. V. Wagner ◽  
V. V. Katsevych
Keyword(s):  
Enzyme Activity ◽  
Enzymatic Activity ◽  
Phosphatase Activity ◽  
High Efficiency ◽  
Soil Column ◽  
Hydrolytic Enzyme ◽  
Activity Level ◽  
Artificial Soil ◽  
Soil Enzymatic Activity ◽  
Ecological Features

Specific features of distribution total, available phosphorus concentrations and levels of phosphatase enzymatic activity at the layers of artificial soil, sod-lithogenic soils onto gray-green and red-brown clays and on loess-like loams in the Nikopol manganese ore basin are established. It is presented general assessment of technosoil status by evaluation of phosphatase enzyme activity; this enzyme enriches the soil with mineral phosphorus and thereby improves its availability for living organisms. Among current bioindication methodology, soil enzymatic method is the most reliable and promising because enzymatic activity serves a stable indicator of soil biogenicity in comparison with other indicators. Soil enzymatic activity determines both intensity and targeting of biogeochemical processes. High correlation between concentrations of soluble phosphorus and phosphatase activity values by layers of artificial soil (r = 0.87), sod-lithogenic soils onto gray-green (r = 0.77), red-brown clays (r = 0.62) and onto loess-like loam (r = 0.95) was determined. Tendency of decreasing hydrolytic enzyme activity, phosphatase, with depth in all types of artificial soil studied was established. High efficiency of the enzymatic activity study in diagnostics of soil fertility dynamics under impact of various anthropogenic and natural ecosystems was determined. Advantages of using this method are capability to determine rapidly the changes occurring in ecosystems in the early stages of degradation processes and prediction of their targeting and, accordingly, their intensity. It has been found that levels of phosphatase activity and values of mobile phosphorus compounds in complex biogeocoenotic systems are sensitive quantitative indicators of changes in environmental conditions in man-made environment, and they generate good data about processes occurred within the soil column. The use of phosphatase activity level can be a reliable and promising method on biomonitoring of technogenic edaphotops.

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