Merck
Search Within
Applied Filters:
Keyword:'311111'
Showing 1-30 of 47 results for "

311111

" within Papers
Sort by Relevance
Philipp Roesle et al.
Journal of the American Chemical Society, 134(42), 17696-17703 (2012-10-18)
The weakly coordinated triflate complex [(P^P)Pd(OTf)](+)(OTf)(-) (1) (P^P = 1,3-bis(di-tert-butylphosphino)propane) is a suitable reactive precursor for mechanistic studies of the isomerizing alkoxcarbonylation of methyl oleate. Addition of CH(3)OH or CD(3)OD to 1 forms the hydride species [(P^P)PdH(CH(3)OH)](+)(OTf)(-) (2-CH(3)OH) or the
Byung-Jun Kollbe Ahn et al.
Journal of agricultural and food chemistry, 60(9), 2179-2189 (2012-02-07)
Toxic solvent and strong acid catalysts causing environmental issues have been mainly used for ring-opening of epoxidized oleochemicals. Here, we demonstrated that magnesium stearate (Mg-stearate) was a high efficient catalyst for solvent-free ring-opening of epoxidized methyl oleate, a model compound
Aman Ullah et al.
ChemSusChem, 10(10), 2167-2174 (2017-03-02)
Catalytic transformation of renewable feedstocks into fine chemicals is in high demands and olefin metathesis is a sophisticated tool for biomass conversion. Nevertheless, the large-scale viability of such processes depends on the conversion efficiency, energy efficiency, catalytic activity, selective conversion
Atanu Biswas et al.
Journal of agricultural and food chemistry, 59(7), 3066-3070 (2011-03-08)
This paper describes the preparation of a new type of branched vegetable oil and its methyl ester that involves the formation of acetonides. A facile and environmentally friendly synthesis has been found to produce acetonides that entails the use of
Estefania Oliva et al.
Biomolecules, 10(2) (2020-02-26)
Bearing grafts based on fatty esters derivatives, lipidyl-cyclodextrins (L-CDs) are compounds able to form water-soluble nano-objects. In this context, bicatenary biobased lipidic-cyclodextrins of low DS were easily synthesized from a fatty ester epoxide by means of alternative methods (ball-milling conditions
Xian-Guo Zou et al.
Journal of agricultural and food chemistry, 62(43), 10594-10603 (2014-10-10)
In the present study, a human milk fat substitute (HMFS) enriched in medium-chain fatty acids (MCFAs) was synthesized through acidolysis reaction from Cinnamomum camphora seed oil (CCSO) with oleic acid in a solvent-free system. A commercial immobilized lipase, Lipozyme RM
Emmanuel Richaud et al.
Chemistry and physics of lipids, 165(7), 753-759 (2012-10-03)
This study deals with oxidation kinetics of three unsaturated fatty esters: methyl oleate, methyl linoleate and methyl linolenate at temperatures ranging from 90 to 150 °C. The reaction was monitored by chemiluminescence. A kinetic model was derived from a simple
Jana Olšovská et al.
Journal of the science of food and agriculture, 99(4), 1772-1779 (2018-09-19)
Although fatty acids have a beneficial effect on yeast growth during fermentation, their effect on foam and sensory stability of beer is negative. In general, long-chain fatty acids originate from raw materials, whereas short-chain acids are produced by yeast during
Hailey M Summers et al.
Bioresource technology, 196, 431-440 (2015-08-16)
The economic feasibility and environmental impact is investigated for the conversion of agricultural waste, delactosed whey permeate, through yeast fermentation to a renewable diesel via hydrothermal liquefaction. Process feasibility was demonstrated at laboratory-scale with data leveraged to validate systems models
Dinesh Koju et al.
Journal of microbiology and biotechnology, 22(8), 1127-1132 (2012-06-21)
Nargenicin A1 is a 28-membered polyketide macrolide, with antibacterial activity against methicillin-resistant Staphylococcus aureus, produced by Nocardia sp. CS682. In this study, the production of nargenicin A1 was improved by enhancing the supply of different biosynthetic precursors. In Nocardia sp.
Yoshiyuki Mochida et al.
Journal of oleo science, 58(9), 461-466 (2009-08-06)
The analysis or preparative isolation of a specimen by a packed column gas chromatograph is affected by the kind and amount (concentration) of the liquid phase coated on the stationary phase. In particular, compounds having the same or similar molecular
B Kollbe Ahn et al.
Advanced materials (Deerfield Beach, Fla.), 24(16), 2123-2129 (2012-03-21)
Amphiphilic reduced graphene oxide is obtained by oleo-functionalization with epoxidized methyl oleate (renewable feedstock) using a green process. The excellent diverse solvent-dispersivity of the oleo-reduced amphiphilic graphene and its reduction chemistry are confirmed in this study. Oleo-reduction of amphiphilic graphene
Preeti B Subhedar et al.
Ultrasonics sonochemistry, 27, 530-535 (2015-05-03)
The synthesis of biodiesel from sunflower oil and methanol based on transesterification using the immobilized lipase from Thermomyces lanuginosus (Lipozyme TL-IM) has been investigated under silent conditions and under an ultrasound field. Ultrasound assisted process led to reduced processing time
Oier Aizpurua-Olaizola et al.
Journal of food science, 80(1), E101-E107 (2014-12-05)
In this study, supercritical fluid extraction has been successfully applied to a sequential fractionation of fatty acids and polyphenols from wine wastes (2 different vitis vinifera grapes). To this aim, in a 1st step just fatty acids were extracted and
Annapurna Kumari et al.
Biotechnology for biofuels, 2(1), 1-1 (2009-01-16)
Transesterification of Jatropha oil was carried out in t-butanol solvent using immobilized lipase from Enterobacter aerogenes. The presence of t-butanol significantly reduced the negative effects caused by both methanol and glycerol. The effects of various reaction parameters on transesterification of
Simon Hammann et al.
Analytical and bioanalytical chemistry, 407(30), 9019-9028 (2015-10-07)
Triacylglycerols represent the major part (>90%) in most plant oils and have to be eliminated, when the minor compounds such as phytosterols or tocopherols should be analyzed. Here, we used an all liquid-liquid chromatographic technique, countercurrent chromatography (CCC), to fractionate
Obie Farobie et al.
Bioresource technology, 191, 306-311 (2015-05-26)
In this study, biodiesel production under supercritical conditions among methanol, ethanol, and tert-butyl methyl ether (MTBE) was compared in order to elucidate the differences in their reaction behavior. A continuous reactor was employed, and experiments were conducted at various reaction
Wijb J C Dekker et al.
FEMS yeast research, 19(6) (2019-08-20)
In Saccharomyces cerevisiae, acyl-coenzyme A desaturation by Ole1 requires molecular oxygen. Tween 80, a poly-ethoxylated sorbitan-oleate ester, is therefore routinely included in anaerobic growth media as a source of unsaturated fatty acids (UFAs). During optimization of protocols for anaerobic bioreactor
Zsuzsanna Grózer et al.
Virulence, 6(1), 85-92 (2015-02-06)
Prostaglandins are C20 fatty acid metabolites with diverse biological functions. In mammalian cells, prostaglandins are produced from arachidonic acid (AA) via cyclooxygenases (COX1 and COX2). Although fungi do not possess cyclooxygenase homologues, several pathogenic species are able to produce prostaglandins from
Farshad Darvishi et al.
New biotechnology, 28(6), 756-760 (2011-02-18)
The yeast Yarrowia lipolytica degrades efficiently low-cost hydrophobic substrates for the production of various added-value products such as lipases. To obtain yeast strains producing high levels of extracellular lipase, Y. lipolytica DSM3286 was subjected to mutation using ethyl methanesulfonate (EMS)
Renee M Thomas et al.
Journal of the American Chemical Society, 133(19), 7490-7496 (2011-04-23)
N-Aryl,N-alkyl N-heterocyclic carbene (NHC) ruthenium metathesis catalysts are highly selective toward the ethenolysis of methyl oleate, giving selectivity as high as 95% for the kinetic ethenolysis products over the thermodynamic self-metathesis products. The examples described herein represent some of the
S Katti et al.
Insect molecular biology, 22(1), 31-40 (2012-11-06)
Many pheromones have very low water solubility, posing experimental difficulties for quantitative binding measurements. A new method is presented for determining thermodynamically valid dissociation constants for ligands binding to pheromone-binding proteins, using β-cyclodextrin as a solubilizer and transfer agent. The
Eko Roy Marella et al.
Metabolic engineering, 61, 427-436 (2019-08-14)
Lactone flavors with fruity, milky, coconut, and other aromas are widely used in the food and fragrance industries. Lactones are produced by chemical synthesis or by biotransformation of plant-sourced hydroxy fatty acids. We established a novel method to produce flavor
T A Misharina et al.
Prikladnaia biokhimiia i mikrobiologiia, 46(5), 599-604 (2010-11-11)
Stability of components of a mixture of methyl linolenoate and methyl oleinate with two lemon (Citrus limon L.) essential oils in hexane during their autooxidation in light was studied by gas chromatography. The essential oils differed by their quantitative ratio
Ursula Biermann et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 18(26), 8201-8207 (2012-05-18)
A kinetic study of the dodecanethiol-catalyzed cis/trans isomerization of methyl oleate (cis-2) without added initiator was performed by focusing on the initiation of the radical chain reaction. The reaction orders of the rate of isomerization were 2 and 0.5 for
Shuang-Fei Cai et al.
Molecules (Basel, Switzerland), 14(8), 2935-2946 (2009-08-25)
The oxo-diperoxo molybdenum(VI) complex MoO(O(2))(2).2QOH (QOH = 8-quinilinol) was prepared and characterized by elemental analysis, IR and UV-Vis spectra. The ionic liquids (ILs) [bmim][BF(4)], [hydemim][BF(4)], and [bmim][PF(6)] were characterized by (1)H-NMR and UV-Vis spectra. The epoxidation of a technical mixture
Naoya Morinaga et al.
Enzyme and microbial technology, 48(6-7), 498-504 (2011-11-25)
We recently reported the characterization of novel cholesterol esterase (EC. 3.1.1.13) from Trichoderma sp. and preliminary work on sterol ester synthesis. In the present study, we further examined the enzyme ability to synthesize cholesterol esters from cholesterol and free fatty
Marie Takai et al.
Bioscience, biotechnology, and biochemistry, 78(2), 238-244 (2014-07-19)
Transmembrane protein CD36 binds multiple ligands, including oxidized low-density lipoproteins (oxLDLs) and long-chain fatty acids (LCFAs). Our aim was to determine whether LCFAs compete with oxLDLs for binding to CD36. We addressed this issue by examining the inhibitory effect of
Tatiana R Amarante et al.
Inorganic chemistry, 52(8), 4618-4628 (2013-03-28)
The reaction of MoO3, 2,2'-bipyridine-5,5-dicarboxylic acid (H2bpdc), water, and dimethylformamide in the mole ratio 1:1:1730:130 at 150 °C for 3 days in a rotating Teflon-lined digestion bomb leads to the isolation of the molybdenum oxide/bipyridinedicarboxylate hybrid material (DMA)[MoO3(Hbpdc)]·nH2O (1) (DMA
Michael A Rogers et al.
Langmuir : the ACS journal of surfaces and colloids, 25(15), 8556-8566 (2009-03-31)
The solvent type strongly affects the nucleation behavior of 12HSA and therefore strongly influences the peak nucleation rate, fiber length, spatial distribution of mass, and degree of branching. Using nonisothermal kinetic models, a correlation was established among the activation energy
Page 1 of 2
Page 1 of 2