Isobaric vapor–liquid equilibrium (VLE) data were measured for the binary mixtures of acetic acid + methyl propionate, propionic acid + methyl acetate, propionic acid + methyl propionate, and methyl propionate + methyl acetate in a temperature range of 330.05–413.15 K at 101.3 kPa. Isothermal ...

Solvation effects of liquid water and 1,4-dioxane have been studied from first principles for the hydrodeoxygenation of methyl propionate over a Pd(1 1 1) catalyst surface model. Microkinetic reaction models have been developed for various reaction environments to study the effects of solvents o...

DFT molecular orbital theory calculations were carried out to investigate OH radical-initiated atmospheric oxidation of methyl propionate. Geometry optimizations of the reactants as well as the intermediates, transition states and products were performed at the B3LYP/6-31G(d,p) level. As the ele...

Isothermal (vapour + liquid) equilibrium data for the binary systems of (CO + methyl propionate) and (CO + ethyl propionate) were measured at temperatures of (293.15, 313.15, 333.15, 353.15, and 373.15) K and at elevated pressures up to 10.00 MPa. The measurements were carried out in a cylindric...

In this work, bubble point pressures of the system of methanol + methyl propionate were measured for several isopleths within temperature and pressure ranges of 382–444 K and 0.437–2.285 MPa, respectively. The vapor pressures of pure methanol and methyl propionate were also measured. The two-s...

Anaerobic ammonium-oxidizing (anammox) bacteria convert ammonium and nitrite into N2 in a chemolithoautotrophic way, meaning that they utilize CO2/HCO3 solely as their carbon sources. Such autotrophic behavior limits their competitiveness with heterotrophic microorganisms in both natural environ...

In this work, the solubility of ethylene in methyl propionate was measured within a temperature range of 283.5–464.8 K and pressures up to 10.7 MPa. Experiments were carried out using the Cailletet apparatus, which uses a synthetic method for the experiments. The critical points of several isop...

The electrochemical intercalation of hexafluorophosphate anion into a graphite positive electrode from methyl propionate (MP) has been investigated by conventional electrochemical techniques in conjunction with in situ Raman spectroscopy and ex situ X-ray diffraction. Graphite electrodes could d...

A new approach was studied for bio-based production of methyl propionate, a precursor of methyl methacrylate. Recombinant E. coli cells were used to perform a cascade reaction in which 2-butanol is reduced to butanone using alcohol dehydrogenase, and butanone is oxidized to methyl propionate and...

Mid-infrared spectra of amorphous and crystalline methyl propionate, CH3CH2COOCH3, are presented for the first time from a single laboratory, along with measurements of the refractive index of each solid form. Density estimates are made and IR band strengths and absorption coefficients are calcu...

We have developed a new method for the separation of [3H]choline metabolites by high-performance liquid chromatography. Using this method it is possible to separate, in one step, all of the known major water-soluble choline metabolites present in crude acid extracts of cells that have been incub...

The thermodynamics and kinetics of the alcoholysis of thiolesters are discussed and related to choline acetyltransferase. The conformation and rotational barriers of acetylcholine are described as is the specific inability of choline to induce depolarization. Evidence is presented for the involv...

The specific radioactivity of a choline phospholipid has been determined by a double-isotope method. Purified phospholipid was hydrolyzed to release labeled choline, and choline kinase was employed to label the choline with 32P from [γ-32P]ATP. The double-labeled phosphorylcholine was purified ...

Publisher SummaryCholine kinase (ATP:choline phosphotransferase) and ethanolamine kinase (ATP:ethanolamine O-phosphotransferase) catalyze the phosphorylation of choline/ethanolamine by ATP in the presence of Mg2+, yielding phosphocholine/phosphoethanolamine and ADP. This enzyme step commits chol...

The rates of non-electrolyte and ion diffusion across bilayer membranes consisting of choline plasmologens or of their alkyl and acyl analogs were studied. The influx of [14C]glucose, 86Rb+ and 36Cl− into small unilamellar vesicles made from a semisynthetic choline plasmalogen and from synthetic...

The organic cation choline is readily accumulated and incorporated into lenses. The characteristics of this accumulation and incorporation were studied by culturing rabbit lenses in TC-199 medium containing radiolabeled choline.The accumulation of radiolabel as measured by lens water/media ratio...

Choline uptake and incorporation into Schistosoma mansoni is used as a model for investigating transport across and formation of a double bilayer surface of a syncytial transporting epithelium. Choline uptake reached a maximal rate during the first 2 min (Vmax = 0.27 μmol mg−1 protein min−1; Km...

The degradation of choline by Candida tropicalis cells grown in a medium containing choline as a nitrogen source was examined. The degradation of choline by resting cells was stimulated by the addition of Cu2+ or glutathione, and inhibited by 2-mercaptoethanol or potassium cyanide. With feeding ...

A choline biosensor for the determination of the phospholipase D activity in rape seeds was prepared. Choline oxidase was co-immobilized with catalase on a partially hydrolysed nylon net using glutaraldehyde and cyclohexyl isocyanide. The nylon net with immobilized enzymes was fixed on the tip o...

The ability of normal young pig aortic tissue to synthesize phospholipids from [2-14C]ethanolamine and [1,2-14C]choline, in vitro, has been examined in areas of focal Evans Blue accumulation (blue areas) and adjacent areas of no dye accumulation (white areas).Incorporation of [2-14C]ethanolamine...