Category: 111-11-5

Balakrishnan, A. published the artcileExperimental correlation of laminar flame pollutant emission indices with methyl ester fuel degree of unsaturation and equivalence ratio, Category: esters-buliding-blocks, the main research area is methyl ester fuel unsaturation equivalence laminar fame pollutant emission.

Fuel unsaturation has been widely cited as a reason for the increased nitric oxide emissions from compression ignition engines when fueled with Me esters (biodiesels) and their blends with petroleum counterparts. In an earlier study, a parameter called degree of unsaturation (DOU) was established to serve as a common platform across different fuel families (esters/alkanes/aromatics) to quantify the effects of fuel unsaturation, particularly with petroleum/biodiesel blends. DOU can be evaluated based on the average mol. formula of the fuel alone without involving complex and expensive exptl. procedures such as those involved in the measurement of iodine number and bromine number In this article, the fuel unsaturation effects on the emission characteristics from the laminar flames of blends of various pre-vaporized Me esters, such as Me oleate, neat biodiesels (from Me esters of soy, canola, palm and rapeseed feedstock) and biodiesel blends were investigated at four burner-exit equivalence ratios of 0.9, 1.0, 1.2 and 1.5. The selection of these fuels for this study was an attempt to isolate the fuel unsaturation effect of biodiesels, and their blending effect with petroleum fuels. Exptl. correlations were developed between DOU (over a range of 1.7-2.5) and global NO and CO emission indexes as a function of equivalence ratio. The effects of DOU on EINO were significantly influenced by the equivalence ratio, with the maximum influence at an equivalence ratio of 1.2.

Fuel published new progress about Biodiesel fuel. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Category: esters-buliding-blocks.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Yao, Yaqi published the artcileRoles of Cu+ and Cu0 sites in liquid-phase hydrogenation of esters on core-shell CuZnx@C catalysts, Category: esters-buliding-blocks, the main research area is liquid hydrogenation ester core shell CuZnx catalyst.

Liquid-phase hydrogenolytic reduction of esters on Cu-based catalysts is a promising approach for synthesis of alcs. Here, core-shell CuZnx@C materials synthesized via pyrolysis of a Zn(NO3)2-loaded metal-organic framework (MOF) were proposed, in which well-defined spacing between Cu species in the parent MOF and the homogeneous loading of a Zn salt leads to an ideal distribution and strong interaction of Cu and Zn after pyrolysis of the precursor. The as-synthesized CuZnx@C showed a much higher catalytic activity than Cu@C. This higher activity is tentatively attributed to the simultaneous presence of Cu0 and Cu+ sites at ZnO crystal domains. The resulting Cu-O-Zn sites have a high tendency to adsorb the ester in the form of a surface bound species that greatly improves the hydrogenolysis, which is the rate controlling step in the reductive pathway. A theor. study confirms the ability of this site to bind and catalytically convert fatty acid esters.

Applied Catalysis, B: Environmental published new progress about Binding energy. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Category: esters-buliding-blocks.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Fiorio, Jhonatan Luiz published the artcileReusable Heterogeneous Tungstophosphoric Acid-Derived Catalyst for Green Esterification of Carboxylic Acids, HPLC of Formula: 111-11-5, the main research area is tungstophosphoric catalyst green esterification carboxylic acid ester.

Solid acid catalysts are environmentally friendly alternatives to the use of mineral acids in a range of applications, including the esterification of carboxylic acids. Here, a phosphorus- and nitrogen-doped, carbon-modified, fully heterogeneous solid acid catalyst was prepared by pyrolysis of a mixture of melamine and tungstophosphoric acid at 250, 500, and 750 °C under a nitrogen atm. provided. The structure of the different catalysts was evaluated by surface area measurements, XRD, XPS, Raman spectroscopy, elemental anal., and electron microscopies. Pyrolysis at 500 °C created complex solid materials with larger surface area and significantly higher acidity, which can be attributed to WO3 formation on a heteroat. (N,P)-carbon structure. The 500 °C-treated heterogeneous catalysts showed remarkably better activity for esterification of palmitic acid and were thus applied in the esterification of a broad range of carboxylic acids with good overall yields. Furthermore, the solid acid catalyst can be easily recovered and recycled up to eight times without significant loss of activity with no leaching of species to the reaction mixture

ACS Sustainable Chemistry & Engineering published new progress about Binding energy. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, HPLC of Formula: 111-11-5.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

O’Reilly, Kirk T. published the artcileOxygen-Containing Compounds Identified in Groundwater from Fuel Release Sites Using GCxGC-TOF-MS, SDS of cas: 111-11-5, the main research area is oxygen containing compound groundwater fuel release wastewater treatment.

This research continues a 7-yr study of oxygen-containing organic compounds present in groundwater at gasoline and diesel fuel release sites that are quantified as diesel-range “”total petroleum hydrocarbons”” when measured by methods utilizing solvent extraction and gas chromatog. Two-dimensional gas chromatog. with time-of-flight mass spectrometry was used to tentatively identify 1162 compounds (TICs) in 113 groundwater samples from 22 sites. Samples were collected from wells either upgradient of the release, within the source zone, or downgradient of the source but still within the plume of dissolved organics associated with release. The names and formulas of all TICs found in samples from each well type are presented and the results from upgradient and downgradient locations are compared in detail. About 60% of the most frequently detected TICs in downgradient wells were also detected in upgradient wells. A majority of these were saturated straight chain alkyl acids, commonly called fatty acids, or fatty acid esters. Of TICs frequently detected in downgradient wells but not upgradient wells, over half were branched alkyl alcs. Hierarchical cluster anal. results suggest about 80% of the chem. composition of downgradient samples is more similar to upgradient samples than to source area samples. Results suggest some TICs may not be petroleum degradation intermediates but compounds synthesized by microorganisms through secondary production and carbon cycling.

Groundwater Monitoring & Remediation published new progress about Biodegradation. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, SDS of cas: 111-11-5.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Rosli, Siti-Suhailah published the artcileModeling to enhance attached microalgal biomass growth onto fluidized beds packed in nutrients-rich wastewater whilst simultaneously biofixing CO2 into lipid for biodiesel production, Application In Synthesis of 111-11-5, the main research area is Chlorella microalgal biomass carbon dioxide biofixation biodiesel fluidized bioreactor.

One way to reconcile an issue associating with the harvesting of microalgal biomass is via the application of attached growth cultivation mode, whereby the mature microalgal biomass can be facilely harvested from the support material. Accordingly, the objectives of present works were to model the attached growth of Chlorella vulgaris onto polyurethane foam support material in a fluidized bed bioreactor while simultaneously bioremediating real nutrients-rich wastewater and biofixing CO2 for biodiesel production The math. models accounting the impact of various interactions between light intensities and CO2 concentrations in culture medium on growing attached microalgal biomass were initially improved. The successful practicality of models was confirmed from the anal. of statistical accuracy while predicting the growth of attached microalgal biomass in real nutrients-rich wastewater. When the microalgal growth reached the stationary growth phase, all the nutrients (nitrogen and phosphorous sources of compounds) were completed impoverished, accentuating the bioremediation potentiality in satisfying the effluent discharged requirements. Subsequently, the modeling of microalgal CO2 biofixation also unveiled that the highest CO2 biofixation rate was transpiring in parallel with the growth rate of attached microalgal biomass during the exponential growth phase. Upon the harvesting, the neutral lipid from mature attached microalgal biomass was found to contain 97.7% (by weight of lipid) of fatty acid Me esters (FAMEs) mixture, heralding the biodiesel purity. Assessment of biodiesel quality showed a balance composition among the saturated, monounsaturated and polyunsaturated FAMEs mixture with high in C16 and C18 FAME species for the materialization of efficient combustion.

Energy Conversion and Management published new progress about Biodiesel fuel. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Application In Synthesis of 111-11-5.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Al Mawali, Mawiya Jaifar Talib published the artcileComparative phytochemical investigations and in vitro pharmacological activities of different brands of olive oil, Recommanded Product: Methyl octanoate, the main research area is olive oil phytochem pharmacol antioxidant.

Olive oil is composed of primary triacylglycerol about 99% of the whole components and secondary fatty acids which are mono, diacylglycerols and phosphates. Olive oil is known to contain many active constituents with different pharmacol. actions such as antioxidant action. The purpose of this research is thus, to compare phytochem. components of different olive oil brands as well as to determine their cytotoxic and antioxidant properties. All those four brands of extra virgin olive oil contained all necessary active constituents especially oleic acid, palmitic acid and linoleic acid. Due to the presence of healthy constituents, all four brands of olive oil showed equivalent antioxidant activity. No cytotoxic activity was reported on the evaluated concentrations Overall comparison of phytochems. as well as pharmacol. activities of all four brands of extra virgin olive oil was found to be satisfactory.

Journal of Applied Sciences published new progress about Artemia salina. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Recommanded Product: Methyl octanoate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Sazawa, Kazuto published the artcileEvaluation of carbon mineralization and structural alterations of organic carbon in high-moor peat soils during incubation, Computed Properties of 111-11-5, the main research area is organic carbon moor peat soil mineralization incubation.

The quantity and quality of soil organic matter (SOM) in the wetlands and peatlands are important for evaluating of the effects of environmental changes. This study’s aim was to evaluate the change in the chem. properties of SOM and dissolved organic matter (DOM) during a constant temperature incubation of high-moor peat soil under two types of vegetation. Incubation of high-moor peat soils collected from marsh vegetation and dwarf bamboo was conducted for 108 days at each temperature of 25°C and 35°C. The chem. properties of alk. extract and DOM in soil samples during incubation were analyzed by tetramethylammonium hydroxide thermochemolysis-gas chromatog.-mass spectrometry (TMAH-GC/MS) and fluorescence anal. The cumulative CO2 emission from peat under dwarf bamboo was higher than that of peat under marsh vegetation. During incubation at 35°C, plant and microbial residues in DOM extracted from dwarf bamboo soil were increased significantly at the early stages of culture. On the other hand, the components of DOM in the marsh vegetation soil sample did not significantly change between incubation at each temperature The fluorescence spectra showed that protein-like fluorescent DOM contained in dwarf bamboo soil is consumed by microorganisms, which promotes leaching of humic-like fluorescent DOM and carbon mineralization during the incubation period at a higher temperature Compared with marsh vegetation soil, the DOM in dwarf bamboo soil is susceptible to temperature rises and can be a larger source of CO2 emissions. This study shows that evaluation of DOM properties in soil could be useful to assess the effect of climate change on soil environment.

Journal of Soils and Sediments published new progress about Bamboo (dwarf). 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Computed Properties of 111-11-5.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Leite, Victor S. A. published the artcileUntargeted Metabolomics Reveals Metabolic Changes Linked to Bulb Purpling in Garlic (Allium sativum L.), Application of Methyl octanoate, the main research area is Allium bulb purpling metabolomics metabolism.

Garlic (Allium sativum L.) is a vegetable known worldwide, mainly for its characteristic aroma and flavor and for exhibiting several medicinal properties. This culture has significant economic and social relevance in the world agricultural scenario. Most of the garlic production is sold in fresh bulbs, where for some countries the more purple skin bulbs are more valued in the market. However, there is still no consensus about the factors that intensify the purple color of the garlic bulbs. Here, we employed gas chromatog.-mass spectrometry-based untargeted metabolomics to study the metabolome of dark and light purple garlics. Multivariate statistical anal. revealed distinct metabolite signatures between these garlic groups. As metabolic changes play an important factor in changes in the phenotype of cells or an organism, this report presents a fundamental approach for supporting garlic producers in understanding the factors that intensify the purplish color of garlic bulbs, paving the way for safer garlic production with dark purple bulbs. In addition, the medicinal properties of dark purple garlic were greater than that of the light purple garlic, presenting greater abundance in organosulfur compounds Overall, the data suggest that some organic acid and fatty acids such as malonic acid and docosanoic acid are the key differentiating factors between dark and light purple garlics.

ACS Food Science & Technology published new progress about Allium sativum. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Application of Methyl octanoate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Wu, Kam-chau published the artcileApplication of anaerobic bacterial ammonification pretreatment to microalgal food waste leachate cultivation and biofuel production, Application In Synthesis of 111-11-5, the main research area is Dunaliella microalgae food waste leachate cultivation anaerobic digestion ammonification; Algal lipids production; Anaerobic digestion; Cyanobacterium apononium; Dunaliella tertiolecta; Food waste leachate.

The current practice of disposing of biodegradable food waste mixed with other solid wastes to landfills is not sustainable and is environmentally undesirable. Moreover, the leakage of nutrient-rich food waste leachate (FWL) impacts the environment by eutrophication of the water body. Two robust microalgal species, Dunaliella tertiolecta (D. tertiolecta) and Cyanobacterium aponinum (C. aponinum), have been selected previously for the treatment of FWL because they can tolerate diluted FWL. However, growth suppression by some inhibiting factors, such as total suspended solids and organic nitrogen, limited biomass productivity, and substantial dilution (5-10% volume/volume FWL) was required. To alleviate this suppression, anaerobic bacterial digestion was proposed to pretreat FWL and convert certain nutrients such as organic nitrogen to ammonium. The pretreatment was optimized in neutral to slightly alk. media, where a byproduct of biomethane up to 4.67 L methane/kg COD was produced. Regarding the nutrient removal efficiency, 98.99% of total nitrogen and 65% of total phosphorus can be removed by D. tertiolecta, whereas more than 80% of total nitrogen and 65% of total phosphorus can be removed by C. aponinum. The use of anaerobic bacterial ammonification pretreatment can significantly improve the performance of subsequent microalgal treatments and has been shown to be a sustainable green technol. for biofuel production and FWL recycling.

Marine Pollution Bulletin published new progress about Ammonification. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Application In Synthesis of 111-11-5.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Lin, Yanxin published the artcileSensory and chemical characterization of Chinese bog bilberry wines using Check-all-that-apply method and GC-Quadrupole-MS and GC-Orbitrap-MS analyses, Product Details of C9H18O2, the main research area is bog bilberry wine cymene orbitrap mass spectrometry; Affective test; CATA; GC–MS; Potential odor-active compound; Sensory profile; Untrained panel; Volatile profile.

The sensory and chem. profiles of com. bog bilberry (BB) wines were investigated using a multi-anal. approach. Sensory test included scaling and check-all-that-apply (CATA) method with questions on liking of BB wine. The sensory data was correlated with their volatile compound profiles determined using gas chromatog. coupled with quadrupole and orbitrap mass spectrometry (GC-Quadrupole/Orbitrap-MS). In general, all BB wines were characterized with “”fruity””, “”blueberry”” and “”floral”” odors and “”sour””, “”mouth puckering”” and “”sweet”” flavors. Samples more frequently characterized as “”fruity”” and “”floral”” in CATA were preferred by the panelists (n = 93). High relative proportions of o-cymene, p-cymenene, 1-octen-3-one and 3-ethylphenol in a sample (described as “”ginger”” and “”chili””) resulted in a lower liking rating. Similarly, generally disliked sample described with “”Chinese herbs”” and “”licorice”” was characterized by compounds 3-methylpentan-1-ol, 1,1,6-trimethyl-1,2-dihydronaphthalene, and 4-vinylphenol. The data will give novel information for berry wine and beverage industry on the quality factors of BB wines linked to higher acceptance.

Food Research International published new progress about Ananas comosus. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Product Details of C9H18O2.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics