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Showing 1 to 20 of 31 for “"fatty acid methyl esters"”.
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Production and purification of fatty acid methyl esters from plant oils of different origin
… of a catalyst. The products of the reaction are fatty acid methyl esters (biodiesel) and glycerol, obtained as two separate phases. However, current reaction efficiency using a homogeneous catalyst, such as sodium hydroxide, has various drawbacks. These include non-specificity leading to …
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Extending the Limits of Solid Phase Microextraction
… and vegetables for volatiles, aroma, caffeine, fatty esters, environmental applications including volatile organic contaminants, polycyclic aromatic hydrocarbons, polychlorinated biphenyls, phenols, pesticides, steroids, herbicides, acid/neutral/base compounds, and organometallic compounds from …
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Determination of fatty acid composition of oils by mass spectrometry
The aim of my thesis was the determination of fatty acid content in the oils using mass spectrometry. I investigated the distribution of the fatty acid composition in beard oil, coconut oil, fish oil, palm oil and sunflower oil using GC-MS. Saponification was used as the first step in sample …
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Characterization of the lipid composition of washed and percoll gradient centrifuged epididymal mouse sperm.
… of specific phospholipid (PL) bound unsaturated fatty acyl chains, may also be involved, since no change in the cholesterol:PL molar ratio following capacitation in mouse has been previously described. In this study, lipid classes (cholesterol, PL, sulfogalactosylglycerolipid (SGG), …
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SYNTHESIS AND CHARACTERIZATION OF BIODIESEL FUELS FROM FURFURYL ALCOHOL AND SPENT COFFEE GROUNDS
… alcohols, and catalysts. In this study, fatty acid methyl esters (FAMEs) and fatty acid ethyl esters (FAEEs) were produced from their respective alcohols and coffee oil, using either a basic (K<sub>2</sub>CO<sub>3</sub>) catalyst or an acidic catalyst (H<sub>2</sub>SO<sub>4</sub>). Fatty …
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Analysis, Experimental Optimization and Chemical Synthesis of Cyclic Monomers Occurring in Edible Fats and Oils
… aspects of the determination of C$\sb $ cyclic fatty acids in edible fats and oil were studied. First, the unequivocal identification of isomeric species of cyclic monomers was carried out using solid phase extraction for the fast isolation of purified fractions of cyclics and through the …
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Selection of Prediction Methods for Thermophysical Properties for Process Modeling and Product Design of Biodiesel Manufacturing
… bonds or the composition of total unsaturated fatty acid methyl esters (FAMEs) and (2) our posting of the Excel spreadsheets for implementing all of the evaluated accurate prediction methods on our group website (www.design.che.vt.edu) for the reader to download without charge.
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TROPHIC ECOLOGY OF SAILFISH LARVAE IN THE GULF OF MEXICO: AN ANALYSIS OF DIET, PREY AVAILABILITY, PREY QUALITY, AND INFLUENCES ON LARVAL GROWTH
… spatial, diet, prey availability, and fatty acid metrics using data collected from near-surface waters in the northern Gulf of Mexico (2017 - 2019). Larvae exhibited a highly selective feeding strategy in early development and expanded their feeding niche to include larger prey items …
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Characterization of Value Added Proteins and Lipids form Microalgae
… fraction was quantified using Bicinchoninic acid (BCA) assay. Protein content in Nannochloris sp. was 16.69 ±4.07 % of dry mass and in Amphora sp. it was 39.89 ±2.09 % of dry mass. Enzyme assays were conducted spectrophotometrically. Nannochloris sp. had malate dehydrogenase, peroxidase and …
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Development of Omega-3-Fatty Acid Enriched Finishing Feed and Value Added Tilapia Product
… omega-3 content specifically eicosapentaenoic acid, docosapentaenoic acid, and docosahexaenoic acid. The objective of this study was to create an omega-3 enriching feed that would increase omega-3 content in tilapia and subsequently decrease the omega-6:3 ratio. An 8 week feeding trial was …
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Analysis of carbonaceous solid deposits from thermal stressing of FAMEs and FAME/diesel blends at different temperatures in a continuous flow reactor
… study were an EN 590 reference diesel and two fatty acid methyl esters (FAMES), viz. rapeseed methyl ester (RME100) and soya methyl ester (SME100). Binary blends of 80 % EN 590 diesel and 20 %RME (RME20), 80 % EN 590 diesel and 20 % SME(SME20), 50 % EN 590 diesel and 50 % SME (SME50) and 93 % …
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The relationship of chlorination and protein and lipid content to baking quality of soft wheat flour
… index. Chlorination decreased the unsaturated fatty acid methyl esters (FAME). There was strong correlation between evenness of cell structure and the decrease of fatty acids 18:1, 18:2, and 18:3 with chlorination. Phospholipids which were qualitatively evaluated were implicated with cell …
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Characterization of a fatty acid elongase condensing enzyme by site-directed mutagenesis and biochemical analysis
Fatty acid elongation is the extension of de novo synthesized fatty acids through a series of four reactions analogous to those of fatty acid synthase. ELOs catalyze the first reaction in the elongation pathway through the condensation of an acyl group with a two carbon unit derived from …
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Growth Media and Lipid Determination Comparison of High Rate Algae Ponds
… Of the three lipid determination methods, the fatty acid methyl esters (FAMEs) quantification was the most precise between replicates. However, this method determined the lowest lipid content because it quantifies a better representative lipid content by excluding other constituents not …
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Determining the impact of carrion decomposition on soil microbial activity levels and community composition.
… events affect soil microbial activity. Fatty acid methyl esters (FAME) profiling was used document community level changes throughout decomposition. Shifts in FAMEs profiles were brought on by the onset of active decay and persisted through to the dry remains stage. The fatty acids 3OH …
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Synthesis of a triglyceride containing a lactonizable hydroxy fatty acid and investigations into the behavior of this triglyceride and related lactones with application to the analysis of beef tallow
… to be derived from precursor 4- and 5-hydroxy fatty acids, respectively. However, methodology was never adequately developed for the concurrent analysis of lactones and their precursor hydroxy fatty acids. This led to the current research objective to investigate the potential for concurrent …
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Investigation of Liquid Trapping Following Supercritical Fluid Extraction
… pressurization did. The occurrence of a methylation reaction of decanoic acid during the SFE and collection processes, using a methanol modified fluid or collection solvent was investigated. The majority of the reaction occurred during the collection process and the degree of methylation …
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New family of unsaturated polyamides from novel long-chain biomass-derived diacids
… is synthesized from C16-rich monounsaturated diacid (C16:1 diacids). C16:1 diacids are derived from fermented biomass intermediates through multistep purifications and hydrolysis. In this regards, we start with a biomass derived feedstock from REG Life Science LLC. The feedstock is a mixture of …
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Resistivity Characterization and Modeling of Synthetic Based Drilling Fluids and Corrosion Detection in Steel
… The major constituents of drilling fluids were fatty acid methyl esters (Insulator), surfactant and water. The drilling fluids were also characterized based on the electrical properties. Based on the electrical impedance and frequency relationship, the SBF was characterized as a resistive …
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Microalgal Biodiesel Production through a Novel Attached Culture System and Conversion Parameters
… transesterification, alcoholysis, or commonly, methylation, when methanol is the alcohol used. There are several different transesterification methods. By simplifying the reaction conditions and examining the effects in terms of maximum fatty acid methyl esters (FAME) produced, we were able to …
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