Initial Creavage of Propylene Glycol with Mixed Culture under Anaerobic Conditions

2021 ◽  
Vol 29 (1) ◽  
pp. 3-8
Author(s):  
Jong Hyuk Seok
Keyword(s):  
Propylene Glycol ◽  
Mixed Culture ◽  
Anaerobic Conditions

Metabolic model for acetate uptake by a mixed culture of phosphate- and glycogen-accumulating organisms under anaerobic conditions

2003 ◽  
Vol 84 (3) ◽  
pp. 359-373 ◽  
Author(s):  
Nevin Yagci ◽  
Nazik Artan ◽  
Emine Ubay Çokgör ◽  
Clifford W. Randall ◽  
Derin Orhon
Keyword(s):  
Mixed Culture ◽  
Metabolic Model ◽  
Anaerobic Conditions ◽  
Acetate Uptake

Mineralisation of 1,2-dibromoethane and other brominated aliphatics under aerobic conditions

1997 ◽  
Vol 36 (10) ◽  
pp. 17-25
Author(s):  
Luisa M. Freitas dos Santos ◽  
Andrew G. Livingston
Keyword(s):  
Mixed Culture ◽  
Soil Remediation ◽  
Bacterial Culture ◽  
Sole Source ◽  
Pollutant Concentration ◽  
Environmental Contaminant ◽  
Anaerobic Conditions ◽  
Aerobic Conditions ◽  
Laboratory Conditions ◽  
Brominated Compounds

1,2-dibromoethane (DBE) is a common environmental contaminant; it is potentially carcinogenic and has been detected in soil and groundwater supplies. Most of the biodegradation studies to date have been performed under anaerobic conditions or in the context of soil remediation, where the pollutant concentration was in the ppb range. The aim of this work was to find a bacterial culture (axenic or mixed) capable of complete aerobic mineralisation of concentrations of DBE up to 1 g L−1 under well controlled laboratory conditions. A mixed culture capable of degrading DBE as a sole source of carbon has been enriched. In order to verify biodegradation, formation of biodegradation products as well as the disappearance of DBE were measured. The ability of this culture to degrade other chlorinated and brominated compounds has also been tested. Successful degradation of bromoethane, bromoethanol and bromochloroethane was achieved.

scholarly journals Pseudomonas aeruginosa PAO1 Pyocin Production Affects Population Dynamics within Mixed-Culture Biofilms

2008 ◽  
Vol 191 (4) ◽  
pp. 1349-1354 ◽  
Author(s):  
Richard D. Waite ◽  
Michael A. Curtis
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Population Dynamics ◽  
Mixed Culture ◽  
Bacterial Population ◽  
Anaerobic Conditions ◽  
Strain Pao1 ◽  
Pseudomonas Aeruginosa Pao1 ◽  
Sensitive Isolate ◽  
Slow Growing ◽  
Aerobic And Anaerobic

ABSTRACT Transcriptomic and phenotypic studies showed that pyocins are produced in Pseudomonas aeruginosa PAO1 aerobic and anaerobic biofilms. Pyocin activity was found to be high in slow-growing anaerobic biofilms but transient in aerobic biofilms. Biofilm coculture of strain PAO1 and a pyocin-sensitive isolate showed that pyocin production had a significant impact on bacterial population dynamics, particularly under anaerobic conditions.

Molecular dynamics of poly(propylene) glycol in nanometer confinements

2000 ◽  
Vol 10 (PR7) ◽  
pp. Pr7-271-Pr7-274 ◽  
Author(s):  
A. Schönhals ◽  
H. Goering ◽  
K.-W. Brzezinka ◽  
Ch. Schick
Keyword(s):  
Molecular Dynamics ◽  
Propylene Glycol ◽  
Poly Propylene

The Reaction of Thiol Compounds with the Vitamin-K Dependent Clotting Factors

1969 ◽  
Vol 21 (03) ◽  
pp. 573-579 ◽  
Author(s):  
P Fantl
Keyword(s):  
Prothrombin Time ◽  
Vitamin K ◽  
Anaerobic Conditions ◽  
Clotting Factors ◽  
Thiol Compounds ◽  
Aerobic Conditions ◽  
One Stage ◽  
Factor Ii ◽  
Ph Dependent ◽  
The One

SummaryTreatment of human and dog oxalated plasma with 0.2 to 1.0 × 10−1 M 2.3-dithiopropanol (BAL) or dithiothreitol (DTT) at 2–4° C for 30 min results in the reduction of the vitamin-K dependent clotting factors II, VII, IX and X to the respective-SH derivatives. The reaction is pH dependent. Under aerobic conditions the delayed one stage prothrombin time can be partly reversed. Under anaerobic conditions a gradual prolongation of the one stage prothrombin time occurs without reversal.In very diluted plasma treated with the dithiols, prothrombin can be converted into thrombin if serum as source of active factors VII and X is added. In contrast SH factors VII, IX and X are inactive in the specific tests. Reoxidation to active factors II, VII, IX and X takes place during adsorption and elution of the SH derivatives. The experiments have indicated that not only factor II but also factors VII, IX and X have active-S-S-centres.

METABOLISM OF 17α-HYDROXYPROGESTERONE-4-14C-17α-CAPROATE BY HOMOGENATES OF RAT LIVER AND HUMAN PLACENTA

1961 ◽  
Vol 36 (4) ◽  
pp. 511-519 ◽  
Author(s):  
Margaret Wiener ◽  
Charles I. Lupa ◽  
E. Jürgen Plotz
Keyword(s):  
Rat Liver ◽  
Human Placenta ◽  
Steric Hindrance ◽  
Placental Tissue ◽  
Caproic Acid ◽  
Major Product ◽  
Side Chain ◽  
Anaerobic Conditions ◽  
Prolonged Action ◽  
Long Acting

ABSTRACT 17α-hydroxyprogesterone-4-14C-17α-caproate (HPC), a long-acting progestational agent, was incubated with homogenates of rat liver and human placenta. The rat liver was found to reduce Ring A of HPC under anaerobic conditions to form allopregnane-3β,17α-diol-20-one-17α-caproate and pregnane-3β,17α-diol-20-one-17α-caproate, the allopregnane isomer being the major product. The caproic acid ester was neither removed nor altered during the incubation. Placental tissue did not attack HPC under conditions where the 20-ketone of progesterone was reduced. It is postulated that this absence of attack on the side chain is due to steric hindrance from the caproate ester, and that this may account for the prolonged action of HPC.

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