Results 21 to 30 of about 182,400 (269)

Scientific Opinion on Flavouring Group Evaluation 20, Revision 4 (FGE.20Rev4): Benzyl alcohols, benzaldehydes, a related acetal, benzoic acids, and related esters from chemical groups 23 and 30 [PDF]

EFSA Journal, 2012
The Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids of the European Food Safety Authority was requested to evaluate 45 flavouring substances in the Flavouring Group Evaluation 20, Revision 4 (FGE.20Rev4), using the Procedure in ...
EFSA Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids (CEF)
doaj   +1 more source

Promoting electrocatalytic CO2 reduction to formate via sulfur-boosting water activation on indium surfaces

Nature Communications, 2019
CO2 conversion to liquid fuels provides an appealing means to remove the greenhouse gas, although it is challenging to find materials that are both active and selective.
Wenchao Ma, Shunji Xie, Xia-Guang Zhang, Fanfei Sun, Jincan Kang, Zheng Jiang, Qinghong Zhang, De-Yin Wu, Ye Wang   +8 more
doaj   +1 more source

Solvent-Free Iron(III) Chloride-Catalyzed Direct Amidation of Esters

Molecules, 2020
Amide functional groups are prominent in a broad range of organic compounds with diverse beneficial applications. In this work, we report the synthesis of these functional groups via an iron(iii) chloride-catalyzed direct amidation of esters.
Blessing D. Mkhonazi, Malibongwe Shandu, Ronewa Tshinavhe, Sandile B. Simelane, Paseka T. Moshapo   +4 more
doaj   +1 more source

Investigation of Lactones as Innovative Bio-Sourced Phase Change Materials for Latent Heat Storage

Molecules, 2019
In the presented work, five bio-based and bio-degradable cyclic esters, i.e. lactones, have been investigated as possible phase change materials for applications in latent heat storage systems. Commercial natural lactones such as ε-caprolactone and &
Rebecca Ravotti, Oliver Fellmann, Nicolas Lardon, Ludger J. Fischer, Anastasia Stamatiou, Jörg Worlitschek   +5 more
doaj   +1 more source

Morphology–acidity synergy in ZSM-5 for selective para-xylene synthesis via CO2/H2-mediated toluene methylation

Journal of CO2 Utilization
CO2/H2-mediated toluene methylation over metal oxide–zeolite bifunctional catalyst offers a sustainable route for para-xylene (PX) synthesis, yet how zeolite morphology and acidity synergistically govern this coupled process remains unclear.
Bilyu Hong, Kai Yuan, Dongchen Pan, Jia Liu, Siyuan Huang, Wen Zhou, Linmin Ye, Youzhu Yuan   +7 more
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Iridium-Catalysed ortho-Directed Deuterium Labelling of Aromatic Esters—An Experimental and Theoretical Study on Directing Group Chemoselectivity

Molecules, 2015
Herein we report a combined experimental and theoretical study on the deuterium labelling of benzoate ester derivatives, utilizing our developed iridium N-heterocyclic carbene/phosphine catalysts.
Jennifer Devlin, William. J. Kerr, David M. Lindsay, Timothy J. D. McCabe, Marc Reid, Tell Tuttle   +5 more
doaj   +1 more source

2-Hydroxy-N-phenylbenzamides and Their Esters Inhibit Acetylcholinesterase and Butyrylcholinesterase

Biomolecules, 2019
The development of novel inhibitors of acetylcholinesterase (AChE) and butyrylcholinesterase (BuChE) represents a viable approach to alleviate Alzheimer’s disease.
Martin Krátký, Šárka Štěpánková, Neto-Honorius Houngbedji, Rudolf Vosátka, Katarína Vorčáková, Jarmila Vinšová   +5 more
doaj   +1 more source

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

FEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa, Konstantinos Makryniotis, Theofani‐Iosifina Sousani, Evangelos Topakas, Vangelis Daskalakis, Maria Dimarogona   +5 more
wiley   +1 more source

Análise dos álcoois, ésteres e compostos carbonílicos em amostras de óleo fúsel Analysis of the alcohols, esters and carbonyl compounds in fusel oil samples

Química Nova, 2001
Analysis of alcohols, esters and carbonyl compounds were performed using HRGC and HPLC techniques in samples of fusel oils from three different Brazilian alcohol distilleries.
Eduardo R. Pérez, Daniel R. Cardoso, Douglas W. Franco   +2 more
doaj   +1 more source

Oenological Characteristics of Fermented Apple Musts and Volatile Profile of Brandies Obtained from Different Apple Cultivars

Biomolecules, 2020
Volatile profile of spirits is the most important factor, because it can contribute to pleasant flavor. The aim of the study was to determine the impact of dessert apple cultivar used for fermentation on the concentration of volatile compounds in apple ...
Magdalena Januszek, Paweł Satora, Tomasz Tarko   +2 more
doaj   +1 more source