Results 71 to 80 of about 34,436 (236)

Formation of Ethyl Carbamate in Umeshu (Plum Liqueur).

Journal of the Food Hygienic Society of Japan (Shokuhin Eiseigaku Zasshi), 2001
Samples of umeshu, a Japanese plum liqueur made from unripe plums, shochu and crystal sugar, were stored under fluorescent light, in the dark and in the refrigerator. The amount of ethyl carbamate formed in umeshu exposed to light or room temperature was larger than that in the dark or at low temperature.
K, Suzuki, H, Kamimura, A, Ibe, S, Tabata, K, Yasuda, M, Nishijima   +5 more
openaire   +3 more sources

Production, characterization and determination of the real catalytic properties of the putative "succinate dehydrogenase" from Wolinella succinogenes [PDF]

, 2009
Both the genomes of the epsilonproteobacteria Wolinella succinogenes and Campylobacter jejuni contain operons (sdhABE) that encode for so far uncharacterized enzyme complexes annotated as ‘non-classical’ succinate:quinone reductases (SQRs).
Ackrell, Altschul, Baar, Bamford, Berks, Biel, Blaut, Bronder, Carlone, Clark, Collins, Collins, Dietrich, Gomes, Groß, Hägerhäll, Hedderich, Hederstedt, Heim, Huang, Iverson, Iverson, Janausch, Kenney, Körtner, Krafft, Kröger, Kyhse-Andersen, Laemmli, Lancaster, Lancaster, Lancaster, Lancaster, Lancaster, Lancaster, Lancaster, Lehman, Lemma, Lemos, Lemos, Leys, Lorenzen, Madej, Madej, Maguire, Mewies, Mileni, Ohnishi, Palmer, Park, Parkhill, Pealing, Rais, Rich, Robinson, Robinson, Schäfer, Schmid, Simon, Simon, Singer, Sun, Taylor, Thummer, Tietze, Unden, Unden, Wang, Wardman, Wild, Woodall, Yankovskaya   +71 more
core   +1 more source

Transitioning Formamide Solvothermal Syntheses of MOFs to Less Toxic Solvents

Chemistry – A European Journal, EarlyView.
Metal‐organic Frameworks (MOFs) are commonly synthesized in toxic formamide solvents. This study investigates the synthetic factors required for effective removal of formamides across various classes of MOFs, providing a foundation for designing new sustainable MOF syntheses.
Julia C. Donovan, Evelyn C. Peterson, Adam J. Matzger   +2 more
wiley   +1 more source

Early-stage star forming cloud cores in GLIMPSE Extended Green Objects (EGOs) as traced by organic species [PDF]

, 2014
In order to investigate the physical and chemical properties of massive star forming cores in early stages, we analyse the excitation and abundance of four organic species, CH3OH, CH3OCH3, HCOOCH3 and CH3CH2CN, toward 29 Extended Green Object (EGO) cloud
Chen, Xi, Ge, Jixing, He, Jinhua, Takahashi, S.   +3 more
core   +1 more source

Monosubstituted N‐Arylhydroxylamine Chemistry: Integrating Contemporary Synthetic Approaches for the Efficient Construction of Diverse Heterocyclic Scaffolds

Chemistry – A European Journal, EarlyView.
Monosubstituted N‐arylhydroxylamines represent a unique subclass of hydroxylamines that act as pivotal intermediates in redox transformations and as versatile platforms for further synthetic transformations. They serve as key building blocks in the synthesis of architecturally complex heterocycles and other valuable organic compounds.
Michael G. Kallitsakis, Kyriakos D. Nikopoulos, Ioannis N. Lykakis   +2 more
wiley   +1 more source

The odour of white bread [PDF]

, 1973
Volatile constituents of white bread were investigated. Different methods were used for isolating and concentrating components to avoid artefacts as far as possible. Especially good was enlarged vapour analysis.
Mulders, E.J.
core   +1 more source

Revisiting the synthesis of dimethyl carbonate from methanol and carbon dioxide

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract The process for producing dimethyl carbonate (DMC) from carbon dioxide (CO2) and methanol is explored in this article. It provides an overview of the thermodynamics involved in DMC synthesis, discussing the challenges and potential solutions. The article highlights the reported use of catalysts and dehydrating agents to improve DMC yield and ...
Diego Alexander Santos Araque, Niloofar Mozaffari, Louis Fradette, Serge Kaliaguine   +3 more
wiley   +1 more source

Reaction of ethyl acetoacetate with p-toluenesulfonic acid: Formation of ethyl isodehydroacetate and/or ethyl p-toluenesulfonate.

Chemical and Pharmaceutical Bulletin, 1983
Treatment of ethyl acetoacetate with anhydrous p-toluenesulfonic acid at room temperature led to ethyl isodehydroacetate (1) in high yield by acid-catalyzed condensation. On the other hand, in refluxing toluene, the unexpected ethyl ester of p-toluene-sulfonic acid (2) was formed in moderate yield.
YOSHIHIRO NITTA, YASUSHI ARAKAWA
openaire   +1 more source

Chemical Straightening as a Source of Analytical Variability in Hair Testing: A Dual‐Analyte Case Report

Drug Testing and Analysis, EarlyView.
ABSTRACT Hair analysis is increasingly used in forensic toxicology; however, result interpretation may be influenced by cosmetic hair treatments. Although the effects of bleaching, dyeing, and thermal straightening have already been evaluated, data on permanent chemical hair straightening are scarce, particularly under in vivo conditions.
Miriam Blanco‐Ces, Ana de‐Castro‐Ríos, María Cobo‐Golpe, Ángela López‐Rabuñal, Angelines Cruz, Elena Lendoiro   +5 more
wiley   +1 more source

Formate Excretion in Urine of Rats Fed Dimethylaminoazobenzene-rich Diets: The Possibility of Formate Formation from D-Lactate [PDF]

, 2008
This experiment was carried out to evaluate the possibility of degradation of d-lactate into formate and acetaldehyde. In order to induce hyperproduction of d-lactate in rats.
Kawase, Michi, Kitamura, Yuki, Ohmori, Shinji   +2 more
core   +1 more source