scholarly journals Oxygen Isotope Signature during Phosphite Oxidation by Bacterial Alkaline Phosphatase

2020 ◽  
Author(s):  
Sae Jung Chang ◽  
Ruth Blake
Keyword(s):  
Alkaline Phosphatase ◽  
Oxygen Isotope ◽  
Bacterial Alkaline Phosphatase ◽  
Isotope Signature

scholarly journals Dynamic consolidated bioprocessing for innovative lab-scale production of bacterial alkaline phosphatase from Bacillus paralicheniformis strain APSO

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Soad A. Abdelgalil ◽  
Nadia A. Soliman ◽  
Gaber A. Abo-Zaid ◽  
Yasser R. Abdel-Fattah
Keyword(s):  
Alkaline Phosphatase ◽  
Consolidated Bioprocessing ◽  
Black Liquor ◽  
Batch Cultivation ◽  
Efficient Production ◽  
Scale Production ◽  
Market Demand ◽  
Stirred Tank Bioreactor ◽  
Bacterial Alkaline Phosphatase ◽  
Bacillus Paralicheniformis

AbstractTo meet the present and forecasted market demand, bacterial alkaline phosphatase (ALP) production must be increased through innovative and efficient production strategies. Using sugarcane molasses and biogenic apatite as low-cost and easily available raw materials, this work demonstrates the scalability of ALP production from a newfound Bacillus paralicheniformis strain APSO isolated from a black liquor sample. Mathematical experimental designs including sequential Plackett–Burman followed by rotatable central composite designs were employed to select and optimize the concentrations of the statistically significant media components, which were determined to be molasses, (NH4)2NO3, and KCl. Batch cultivation in a 7-L stirred-tank bioreactor under uncontrolled pH conditions using the optimized medium resulted in a significant increase in both the volumetric and specific productivities of ALP; the alkaline phosphatase throughput 6650.9 U L−1, and µ = 0.0943 h−1; respectively, were obtained after 8 h that, ameliorated more than 20.96, 70.12 and 94 folds compared to basal media, PBD, and RCCD; respectively. However, neither the increased cell growth nor enhanced productivity of ALP was present under the pH-controlled batch cultivation. Overall, this work presents novel strategies for the statistical optimization and scaling up of bacterial ALP production using biogenic apatite.

Calibrating the triple oxygen isotope signature of cultured diatoms

2021 ◽  
Author(s):  
Frasier L. Liljestrand ◽  
Anxhela Hania ◽  
Mario Giordano ◽  
David T. Johnston
Keyword(s):  
Oxygen Isotope ◽  
Isotope Signature

scholarly journals Global 3‐D Simulations of the Triple Oxygen Isotope Signature Δ 17 O in Atmospheric CO 2

2019 ◽  
Vol 124 (15) ◽  
pp. 8808-8836 ◽  
Author(s):  
Gerbrand Koren ◽  
Linda Schneider ◽  
Ivar R. Velde ◽  
Erik Schaik ◽  
Sergey S. Gromov ◽  
...  
Keyword(s):  
Oxygen Isotope ◽  
Isotope Signature

A Test for Bacterial Alkaline Phosphatase: Use in Rapid Identification of Serratia Organisms

1973 ◽  
Vol 19 (11) ◽  
pp. 1248-1249 ◽  
Author(s):  
Paul L Wolf ◽  
Elisabeth Von der Muehll ◽  
Karen Praisler
Keyword(s):  
Alkaline Phosphatase ◽  
Clinical Laboratory ◽  
Rapid Identification ◽  
Hospitalized Patients ◽  
Coagulase Negative Staphylococcus ◽  
Blue Color ◽  
Bacterial Alkaline Phosphatase ◽  
Life Threatening ◽  
Life Threatening Complication ◽  
Coagulase Positive Staphylococcus

Abstract This investigation concerns identification of alkaline phosphatase production by bacterial organisms, as detected by a blue color resulting from conversion of indolyl phosphate to indigo. Coagulase-positive Staphylococcus produced alkaline phosphatase; coagulase-negative Staphylococcus did not. Serratia did not produce alkaline phosphatase; those Enterobacteriaceae we tested did. Thus, this test rapidly differentiates these organisms, diminishing the time for identification of Serratia in the clinical laboratory by 48 h. Identification of Serratia should not be ignored, because it is a life-threatening complication for certain hospitalized patients.

Oxygen isotope signature of UV degradation of glyphosate and phosphonoacetate: Tracing sources and cycling of phosphonates

2013 ◽  
Vol 260 ◽  
pp. 947-954 ◽  
Author(s):  
Edward H. Sandy ◽  
Ruth E. Blake ◽  
Sae Jung Chang ◽  
Yao Jun ◽  
Chan Yu
Keyword(s):  
Oxygen Isotope ◽  
Uv Degradation ◽  
Isotope Signature

scholarly journals Possible Relationships between Seep Carbonates and Gas Hydrates in the Miocene of the Northern Apennines

2011 ◽  
Vol 2011 ◽  
pp. 1-9 ◽  
Author(s):  
Stefano Conti ◽  
Daniela Fontana
Keyword(s):  
Oxygen Isotope ◽  
Gas Hydrates ◽  
Gas Hydrate ◽  
Close Association ◽  
Northern Apennines ◽  
Carbonate Precipitation ◽  
Soft Sediment ◽  
Isotope Signature ◽  
Sediment Deformation ◽  
Soft Sediment Deformation

In the Miocene of the northern Apennines, a widespread carbonate precipitation was induced by the expulsion of methane-rich fluids. Numerous outcrops of carbonate masses share sedimentological, textural and geochemical features with present-day gas hydrate-associated carbonates. We hypothesize the contribution of paleo-gas hydrate destabilization on the base of the heavy oxygen isotope signature, the presence of distinctive sedimentary features (breccias, pervasive nonsystematic fractures, and soft sediment deformation), the close association between seep carbonates and sedimentary instability, and the huge dimensions of seep carbonates bearing brecciated structures.

Sign in / Sign up

Export Citation Format

Share Document