Results 11 to 20 of about 424,465 (437)

The largest oxigen bearing organic molecule repository [PDF]

open access: yes, 2007
We present the first detection of complex aldehydes and isomers in three typical molecular clouds located within 200pc of the center of our Galaxy. We find very large abundances of these complex organic molecules (COMs) in the central molecular zone (CMZ), which we attribute to the ejection of COMs from grain mantles by shocks.
Huttemeister S.   +8 more
arxiv   +3 more sources

“Real-World” Evaluation of Lipid Oxidation Products and Trace Metals in French Fries From Two Chain Fast-Food Restaurants

open access: yesFrontiers in Nutrition, 2021
Differences in lipid oxidation products (LOPs) and trace metal concentrations of French fry samples found between two global chain fast-food restaurants in the UK were investigated using high-resolution proton nuclear magnetic resonance (1H NMR) and ...
Adam Le Gresley   +4 more
doaj   +1 more source

Is there any linkage between interstellar aldehyde and alcohol? [PDF]

open access: yes, 2021
It is speculated that there might be some linkage between interstellar aldehydes and their corresponding alcohols. Here, an observational study and astrochemical modeling are coupled together to illustrate the connection between them. The ALMA Cycle 4 data of a hot molecular core, G10.47+0.03 is utilized for this study. Various aldehydes (acetaldehyde,
arxiv   +1 more source

Application of the SHS-GC-FID method and HPLC-DAD method in the prediction of the shelf-life of gluten-free cookies [PDF]

open access: yesJournal of the Serbian Chemical Society, 2017
The aim of this study was to compare the sensitivity of two analytical methods for the prediction of the shelf-life of unpacked and packed gluten-free rice–buckwheat cookies kept at ambient (23±1°C) and elevated (40±1°C) temperature during storage ...
Sakač Marijana   +6 more
doaj   +1 more source

Selective Enzymatic Reduction of Aldehydes

open access: yesMolecules, 2006
Highly selective enzymatic reductions of aldehydes to the corresponding alcohols was performed using an E. coli JM109 whole cell biocatalyst. A selective enzymatic method for the reduction of aldehydes could provide an eco-compatible alternative to ...
Patrizia Di Gennaro   +3 more
doaj   +1 more source

Branched chain aldehydes: production and breakdown pathways and relevance for flavour in foods [PDF]

open access: yes, 2009
Branched aldehydes, such as 2-methyl propanal and 2- and 3-methyl butanal, are important flavour compounds in many food products, both fermented and non-fermented (heat-treated) products. The production and degradation of these aldehydes from amino acids
Engels, W.J.M., Smit, B.A., Smit, G.
core   +2 more sources

Low Temperature Chemoselective Hydrogenation of Aldehydes over a Magnetic Pd Catalyst

open access: yesApplied Sciences, 2019
Chemoselective hydrogenation of aldehydes with heterogeneous catalysts under mild conditions is of great importance but remains a major challenge. Herein, an efficient strategy was developed for low temperature chemoselective hydrogenation of aldehydes ...
Anqiu Liu   +6 more
doaj   +1 more source

Engineering an Alcohol-Forming Fatty Acyl-CoA Reductase for Aldehyde and Hydrocarbon Biosynthesis in Saccharomyces cerevisiae

open access: yesFrontiers in Bioengineering and Biotechnology, 2020
Aldehydes are a class of highly versatile chemicals that can undergo a wide range of chemical reactions and are in high demand as starting materials for chemical manufacturing.
Jee Loon Foo   +10 more
doaj   +1 more source

Scientific Opinion on Flavouring Group Evaluation 12, Revision 3 (FGE.12Rev3): Primary saturated or unsaturated alicyclic alcohol, aldehyde, acid, and esters from chemical group 7 [PDF]

open access: yesEFSA Journal, 2012
The Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids of the European Food Safety Authority was requested to evaluate 10 flavouring substances in the Flavouring Group Evaluation 12 (FGE.12), including an additional substance in ...
EFSA Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids (CEF)
doaj   +1 more source

(Sub-)millimeter-wave spectroscopy of gauche-propanal [PDF]

open access: yesJ. Mol. Spectrosc. 384 (2022) Art. No. 111565, 2021
A detailed analysis of (sub-)millimeter-wave spectra of the vibrational ground state ($\upsilon=0$) combined with the energetically lowest excited vibrational state ($\upsilon_{24}=1$; aldehyde torsion) of gauche-propanal (g-C$_2$H$_5$CHO) up to 500 GHz is presented.
arxiv   +1 more source

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