Relevant bibliographies by topics / Sugar fatty acid ester

Academic literature on the topic 'Sugar fatty acid ester'

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Published: 9 March 2023

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Journal articles on the topic "Sugar fatty acid ester"

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Wakita, M., and S. Hoshino. "Effect of sugar fatty acid esters on rumen fermentation in vitro." British Journal of Nutrition 58, no. 3 (November 1987): 493–502. http://dx.doi.org/10.1079/bjn19870117.

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1.The effect of sugar fatty acid esters (SFEs; currently used as food additives for human consumption) on rumen volatile fatty acids (VFA) and gas production was studied with sheep rumen contents in vitro.2. Some SFEs having monoester contents of more than 70 % increased the molar proportion of propionate in conjunction with reduction in the acetate: propionate ratio when the individual SFE was added to rumen contents in a final concentration of 4 g/l. Laurate sugar ester was the most potent propionate enhancer and rumen gas depressor, the effective dose being as low as 1 g/l in a final concentration. Fatty acid esters other than SFEs had little, if any, effect on rumen VFA production and their molar proportions.3. Approximately 50% of laurate sugar ester was hydrolysed by in vitro incubation with rumen fluid for 2 h. The addition of fatty acids and sucrose was also effective in the alterations of rumen VFA and gas production. However, the effect of SFEs on in vitro rumen fermentation was significantly greater than that of their constituent fatty acids or sucrose, or both. Accordingly, the effect appeared to be ascribed to the complex action of SFE itself and to its constituents, free fatty acids and sucrose.4. SFEs, at the level of 4 g/l, reduced substantially the froth formation (ingesta volume increase) and seemed to be effective for the prevention of bloat.
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Baker, Irene J. A., R. Ian Willing, D. Neil Furlong, Franz Grieser, and Calum J. Drummond. "Sugar fatty acid ester surfactants: Biodegradation pathways." Journal of Surfactants and Detergents 3, no. 1 (January 2000): 13–27. http://dx.doi.org/10.1007/s11743-000-0108-1.

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Snoch, Wojciech, Karolina Stępień, Justyna Prajsnar, Jakub Staroń, Maciej Szaleniec, and Maciej Guzik. "Influence of Chemical Modifications of Polyhydroxyalkanoate-Derived Fatty Acids on Their Antimicrobial Properties." Catalysts 9, no. 6 (June 5, 2019): 510. http://dx.doi.org/10.3390/catal9060510.

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Sugar esters are bioactive compounds derived from renewable resources. They consist of a sugar moiety with attached non-polar part – usually a fatty acid. These compounds find uses in cosmetic, food and pharmaceutical industries as surfactants due to their physicochemical and antimicrobial activities. In this study we have produced fatty acids for sugar ester synthesis from bacterially derived polyesters, namely polyhydroxyalkanoates (PHAs). We have developed methodology to decorate PHA monomers with a fluorinated moiety. With aid of biocatalysis a series of glucose esters was created with unmodified and modified PHA monomers. All synthesised compounds showed moderate antimicrobial activity.
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Baker, Irene J. A., D. Neil Furlong, Franz Grieser, and Calum J. Drummond. "Sugar fatty acid ester surfactants: Base-catalyzed hydrolysis." Journal of Surfactants and Detergents 3, no. 1 (January 2000): 29–32. http://dx.doi.org/10.1007/s11743-000-0109-0.

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Baker, Irene J. A., Barry Matthews, Hector Suares, Irena Krodkiewska, D. Neil Furlong, Franz Grieser, and Calum I. Drummond. "Sugar fatty acid ester surfactants: Structure and ultimate aerobic biodegradability." Journal of Surfactants and Detergents 3, no. 1 (January 2000): 1–11. http://dx.doi.org/10.1007/s11743-000-0107-2.

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6

Aissa, Ibrahim, Anikó Kilár, and Ágnes Dörnyei. "Study on the CID Fragmentation Pathways of Deprotonated 4’-Monophosphoryl Lipid A." Molecules 26, no. 19 (October 1, 2021): 5961. http://dx.doi.org/10.3390/molecules26195961.

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Lipid A, the membrane-bound phosphoglycolipid component of bacteria, is held responsible for the clinical syndrome of gram-negative sepsis. In this study, the fragmentation behavior of a set of synthetic lipid A derivatives was studied by electrospray ionization multistage mass spectrometry (ESI-MSn), in conjunction with tandem mass spectrometry (MS/MS), using low-energy collision-induced dissociation (CID). Genealogical insight about the fragmentation pathways of the deprotonated 4’-monophosphoryl lipid A structural analogs led to proposals of a number of alternative dissociation routes that have not been reported previously. Each of the fragment ions was interpreted using various possible mechanisms, consistent with the principles of reactions described in organic chemistry. Specifically, the hypothesized mechanisms are: (i) cleavage of the C-3 primary fatty acid leaves behind an epoxide group attached to the reducing sugar; (ii) cleavage of the C-3’ primary fatty acid (as an acid) generates a cyclic phosphate connected to the nonreducing sugar; (iii) cleavage of the C-2’ secondary fatty acid occurs both in acid and ketene forms; iv) the C-2 and C-2’ primary fatty acids are eliminated as an amide and ketene, respectively; (v) the 0,2A2 cross-ring fragment contains a four-membered ring (oxetanose); (vi) the 0,4A2 ion is consecutively formed from the 0,2A2 ion by retro-aldol, retro-cycloaddition, and transesterification; and (vii) formations of H2PO4− and PO3− are associated with the formation of sugar epoxide. An understanding of the relation between 0,2A2 and 0,4A2-type sugar fragments and the different cleavage mechanisms of the two ester-linked primary fatty acids is invaluable for distinguishing lipid A isomers with different locations of a single ester-linked fatty acid (i.e., at C-3 or C-3’). Thus, in addition to a better comprehension of lipid A fragmentation processes in mass spectrometers, our observations can be applied for a more precise elucidation of naturally occurring lipid A structures.
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Tai, Huan Phan, and Gerd Brunner. "Sugar fatty acid ester synthesis in high-pressure acetone–CO2 system." Journal of Supercritical Fluids 48, no. 1 (February 2009): 36–40. http://dx.doi.org/10.1016/j.supflu.2008.09.009.

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8

Lee, Sang Hyun, Sung Ho Ha, Dung Thanh Dang, Woo-Jin Chang, and Yoon-Mo Koo. "Lipase-catalyzed synthesis of fatty acid sugar ester using supersaturated sugar solution in ionic liquids." Journal of Biotechnology 131, no. 2 (September 2007): S88. http://dx.doi.org/10.1016/j.jbiotec.2007.07.152.

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9

Pastor, Kristian, Marijana Acanski, Djura Vujic, Ankica Kondic-Spika, and Nikola Hristov. "Lipid and sugar profiles of various barley cultivars (Hordeum vulgare)." Acta Periodica Technologica, no. 46 (2015): 65–75. http://dx.doi.org/10.2298/apt1546065p.

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The lipid components and soluble sugars in flour samples of different cultivars of barley (Hordeum vulgare), involving winter malting barley, winter forage barley, spring barley, and hulless barley, were identified). Fatty acids were extracted from flour samples with n-hexane, and derivatized into volatile methyl esters, using TMSH (trimethylsulfonium hydroxide) in methanol. Soluble sugars were extracted from defatted and dried samples of barley flour with 96% ethanol, and further derivatized into the corresponding trimethylsilyl (TMS) oximes, using hydroxylamine hydrochloride solution and BSTFA (N,O-bis-(trimethylsilyl)-trifluoroacetamide). The hexane and alcoholic extracts of barley cultivars were analyzed by GC-MS system. Lipid and sugar compositions were very similar in all barley cultivars. Therefore, multivariate analysis was applied to numerical values of automatically integrated areas of the identified fatty acid methyl esters and TMS oximes of soluble sugars. The application of hierarchical cluster analysis showed a great similarity between the investigated flour samples of barley cultivars, according to their fatty acid content (0.96). Also, significant, but somewhat less similarity was observed regarding the content of soluble sugars (0.70). These preliminary results indicate the possibility of distinguishing flour made of barley, regardless of the variety, from flours made of other cereal species, just by the analysis of the contents of fatty acids and soluble sugars.
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Gūngör, Sevgi, Mine Orlu, Yildiz Özsoy, and Ahmet Araman. "In vitro Studies on Sustained Release Suppository Formulations of Tiaprofenic Acid with Sucrose Fattv Acid Ester." Scientia Pharmaceutica 71, no. 4 (December 15, 2003): 357–64. http://dx.doi.org/10.3797/scipharm.aut-03-29.

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The objective of this study was to evaluate the performance of Sucro Ester 7 (sucrose distearate) as additive for preparing sustained release suppositories of tiaprofenic acid. Suppocire AIM (semi-synthetic glycerides) was used as suppository base and formulations were prepared containing different ratios of sugar ester: Suppocire AIM. Content uniformity, disintegration time and in vitro release characteristics of suppositories were investigated. Significant decrease in the extent of drug release was observed with the increase in the content of sugar ester, which was due to the longer disintegration time of suppositories.
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Dissertations / Theses on the topic "Sugar fatty acid ester"

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Yan, Youchun. "Enzymatic production of sugar fatty acid esters." [S.l. : s.n.], 2001. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB9102241.

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Adamopoulos, Lambrini. "Understanding the formation of sugar fatty acid esters." NCSU, 2006. http://www.lib.ncsu.edu/theses/available/etd-06272006-002917/.

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This study aims at elucidating a variety of salient features that dictate the kinetics and chain length effects governing the formation and antimicrobial activity of sugar esters of fatty acids. To do this, anomerically pure glucose, sucrose and cellobiose sugars were transesterified with the methyl esters of fatty acids of variable chain lengths C4, C8, C12, C18, and C20. The methyl esters of butyric, caprylic, lauric, stearic and arachidic acids were reacted with the above carbohydrates to give the respective penta and octaesters. The kinetics of these transesterification reactions were followed by quantitative 31P NMR after phosphitylation of the labile OH groups with 1,3,2- dioxaphospholanyl chloride. This approach proved to be a facile and quantitative means to follow the specific substitutions occurring at the various OH positions within the sugars as a function of degree of conversion, and incoming chain length. As anticipated, a variety of steric and hydrophobic effects were shown to play a key role in determining the reactivity of these systems. The various sugar esters were then adsorbed onto cellulose disks and their microbial activity was examined. Finally, cellulose esters of butyric acid were synthesized using the acyl chloride process.
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AVRAMIDOU, KALLIOPI. "BIOCATALYSIS FOR BIOMASS VALORIZATION: PROTEIN HYDROLYSATES AND SUGAR ESTERS FROM AGRI-FOOD WASTES." Doctoral thesis, Università degli Studi di Milano, 2020. http://hdl.handle.net/2434/704558.

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During this doctorate work, two research topics have been studied within the aim of valorization of waste and by-products derived from the agri-food industry using a biotechnological approach for the production of high-value chemicals. The first topic was the preparation and characterization of hydrolysates from rice bran protein. Rice bran (RB) is a waste derived from the milling process of the rice and is a rich source of highly nutritional proteins, lipids, carbohydrates, and a number of micronutrients (e.g. vitamins, minerals, antioxidants, and phytosterols). The sequential treatment of RB with carbohydrases and proteases was used to prepare mixtures of water-soluble peptides which were tested for their biological activity (ACE-inhibition) and as flavor enhancers. Carbohydrases, that catalyze the hydrolysis of the glycosidic linkages of rice bran polysaccharides, enhanced the extractability of the entrapped protein components. Then, proteases (Flavourzyme or/and Alcalase) allowed converting the protein fraction of rice bran into mixtures of more water-soluble peptides. The prepared samples were submitted to ultrafiltration by using membranes with molecular weight cut-off of 10, 5 and 1 kDa and characterized by SDS-PAGE (Sodium dodecyl sulphate-polyacrylamide gel electrophoresis), Gel Permeation Chromatography (GPC) and by sensory analysis. All samples with a molecular weight under 10 kDa exhibited ACE-inhibitory activity. The highest activity was found for the samples P4’’ (68.70%) with a molecular weight under 1 kDa and P2’ (60.19 %) with a molecular weight under 5 kDa and the lowest activity for the sample “P5” (20.28 %) with a molecular weight under 5 kDa. It is noticeable that the choice of the enzyme for the first step treatment (carbohydrases) has a great effect on the ACE – inhibitory activity of the final hydrolysate. Interestingly, the sensory analysis revealed that the resulting protein hydrolysates exert only sweet and umami taste. It should be mentioned that the bitter taste was completely eliminated, which could be considered very promising for the application and utilization of the rice bran protein hydrolysates as food enhancers. The second topic of this PhD work was the enzymatic synthesis of sugar-fatty acid esters that can be used as bio-surfactants. Surfactants constitute an important class of chemicals widely used in almost every sector of industry. Environmental and health concerns about the effects of the conventional surfactants have increased the demand for surfactants from natural raw materials that possess good biodegradability and low toxicity, along with the desired functional performance. Sugar fatty acid esters (SFAEs), usually called sugar esters, are fully biodegradable, non-ionic surfactants which are characterized by excellent emulsifying, stabilizing and detergency properties. Depending on carbon chain length and nature of the sugar head group, together with the many possibilities for linkage between the hydrophilic sugar and the hydrophobic alkyl chain, SFAEs cover a wide range of hydrophilic-lipophilic balance (HLB) values which result in tunable surfactant properties. Chemical synthesis of SFAEs requires harsh reaction conditions which result, in most cases, in complex mixtures of isomers and by-products. Enzyme-based synthesis is an alternative strategy that can overcome the above-mentioned drawbacks. Sugar fatty acid esters can be prepared, indeed, through an esterification reaction between a sugar and a fatty acid catalyzed by a lipase. SFAEs, including glucose monooleate (GluMO), monostearate (GluMS), monopalmitate (GluMP), monolaurate (GluML), and galactose monooleate (GalMO), monostearate (GalMS), monopalmitate (GalMP), monolaurate (GalML), were synthesized by enzymatic esterification of fatty acids and the corresponding sugar. After a screening of several lipases both in free and immobilized form, an immobilized lipase CALB (Candida antarctica lipase B) was selected as the biocatalyst to promote the ester bond formation. Reactions were carried out in organic solvent by using molecular sieves (4 Å) to scavenge the water by-product and thus shift the reaction toward sugar ester formation. Reaction yields and product characterization were assessed by NMR. Rational design of enzymatic reactions was carried out by using the synthesis of GluMP as the model reaction. Sugar: fatty acid ratio, temperature, and reaction time were selected as variables (response: product yield).
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Ferreira, Gicelia Antonia. "Identificação de líquidos iônicos próticos como solventes para aplicações em biocatálise." Escola Politécnica, 2016. http://repositorio.ufba.br/ri/handle/ri/22632.

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Nos dias atuais, há um grande e crescente interesse em encontrar substâncias ambientalmente amigáveis para processos industriais. Os líquidos iônicos são candidatos a substituir os solventes orgânicos convencionais reduzindo a quantidade de resíduos e diminuindo o impacto ambiental; à temperatura ambiente, esses materiais praticamente não possuem pressão de vapor, são não inflamáveis, podendo ser sintetizados de modo específico, através da combinação diferencial entre cátions e ânions, para desempenhar o papel necessário, além de serem facilmente recicláveis. Os líquidos iônicos são novos meios promissores para muitos processos, tais como síntese química, reações enzimáticas e aplicações no setor de “engenharia verde”. O interesse pela classe dos líquidos iônicos próticos justifica-se em decorrência da sua síntese simples, do baixo custo produção, da baixa toxicidade e da biodegradabilidade, os quais são aspectos inerentes aos processos “verdes”. Nesse contexto, ressalta-se a aplicação dos líquidos iônicos próticos na síntese enzimática de ésteres graxos de açúcares. Cumpre destacar que os mesmos podem ser sintetizados quimicamente ou enzimaticamente. A síntese química diverge da tendência atual, na qual o foco está voltado para a utilização de tecnologias sustentáveis e ambientalmente seguras. Por outro lado, a síntese enzimática é realizada em condições mais suaves de reação, apresenta elevada seletividade e especificidade, o que facilita a recuperação do produto. Porém, a síntese enzimática de ésteres graxos de açúcares encontra um obstáculo, uma vez que os solventes orgânicos capazes de solubilizar adequadamente os carboidratos também agem de forma negativa sobre as enzimas, inativando-as. Portanto, no presente trabalho foi investigado um conjunto de líquidos iônicos próticos visando identificar um meio de reação apropriado para o processo enzimático de síntese do oleato de galactose, que atenda às condições de maximizar a solubilização do carboidrato. Para tanto, uma gama de líquidos iônicos próticos foram sintetizados e caracterizados em termos de coeficiente de partição, viscosidade e solubilidade da galactose, pois essas propriedades exercem influência direta sobre a ação enzimática. Até o melhor de nosso conhecimento, este é o primeiro estudo com foco no processo de produção enzimática de ésteres graxos de açúcares na presença de líquidos iônicos próticos.
Nowadays, there is a great and growing interest in environmentally friendly substances for industrial processes. Ionic liquids are candidates to replace the conventional organic solvents decreasing the amount of waste and reducing the environmental impact; at room temperature, ionic liquids have practically no vapor pressure, are not flammable and may be synthesized specifically through the differential combination of cations and anions, in order to perform the role needed, and are easily recyclable. Ionic liquids are new promising media for many processes, such as chemical synthesis, enzymatic reactions and applications in the “green engineering” sector. The interest for the class of protic ionic liquids is justified due to their simple synthesis, low cost of production, low toxicity and biodegradability potential, which are aspects inherent to the “green” processes. In this context, we highlight the application of protic ionic liquids in the enzymatic synthesis of fatty esters of sugars. It is worth noting that the same can be synthesized chemically or enzymatically. The chemical synthesis diverges from the current trend, in which the focus has turned to the use of sustainable and environmentally safe technologies. On the other hand, the enzymatic synthesis is performed under milder reaction conditions, presents high selectivity and high specificity, besides product recovery ease. Nevertheless, the enzymatic synthesis of fatty esters of sugars meets an obstacle, because the organic solvents able to adequately solubilize the carbohydrate also act negatively on the enzymes, inactivating them. Therefore, in the present study was proposed to investigate a class of protic ionic liquids in order to identify an appropriate reaction medium to the enzymatic process of synthesis of galactose oleate, which meets the conditions of maximizing the solubilization of the carbohydrate. For that, a range of protic ionic liquids were synthesized and characterized in terms of partition coefficient, viscosity and solubility of galactose, because these properties directly influence the enzymatic action. To the best of our knowledge, this is the first study focusing on the enzymatic production process of fatty esters of sugars in the presence of protic ionic liquids.
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Fregapane, Giuseppe. "Chemo-enzymatic synthesis of sugar fatty acid ethers." Thesis, University of Reading, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.357150.

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Šinkūnienė, Dovilė. "Lipase selection and application for fatty acid ester synthesis." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2014. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2014~D_20140210_082745-97488.

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Lipases are widely researched enzyme group because of their ability to catalyze a wide range of synthesis reactions. The aim of this doctoral thesis was to study and optimize fatty acid ester synthesis using lipases. The influence of enzyme choice, its preparation (immobilization), choice of substrates and reaction conditions on fat hydrolysis, biodiesel and phenethyloctanoate (flavour ester) synthesis reaction course and yield was studied. Enterobacter aerogenes lipase, which was developed in Lithuania, was immobilized and its properties were determined for the first time. Commercial lipases were used for hydrolysis and synthesis reactions, the influence of reaction parameters was determined using response surface methodology, and so the yield was optimized. Silica gel was found to be a promising reaction additive for acyl group migration catalysis in biodiesel synthesis reaction. Different lipase specificities towards different acylglycerol classes and regioisomers varied greatly; on the basis of this knowledge two-step biodiesel synthesis catalysis was proposed.
Lipazių atranka ir taikymas riebalų rūgščių esterių sintezei Lipazės yra intensyviai tiriama fermentų grupė dėl jų gebos katalizuoti platų spektrą sintezės reakcijų. Disertacinio darbo tikslas buvo ištirti ir optimizuoti riebalų rūgščių esterių sintezės, panaudojant lipazes, būdus. Tirta fermento preparato paruošimo (imobilizavimo), fermento bei substratų pasirinkimo bei reakcijos sąlygų ir priedų įtaka riebalų hidrolizės, biodyzelino, fenetiloktanoato (kvapiojo esterio) sintezės reakcijų eigai ir išeigai. Pirmą kartą ištirtos Lietuvoje paruoštos Enterobacter aerogenes lipazės savybės, ji imobilizuota ant gamtinės kilmės nešiklių. Komercinių lipazių katalizuojamų reakcijų sąlygų įtakai nustatyti ir reakcijos išeigai optimizuoti naudota atsako paviršiaus metodologija. Tiriant reakcijos priedų įtaką acilgrupės migracijai ir biodyzelino sintezės reakcijai, nustatyta, kad perspektyvus priedas yra silikagelis. Lipazių specifiškumas ženkliai skiriasi skirtingoms acilglicerolių klasėms ir regioizomerams, šių žinių pagrindu buvo pasiūlyta dviejų etapų biodyzelino sintezės katalizė.
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Pisac, Claudia A. "An experimental study of combustion characteristics of fatty acid methyl ester biodiesel." Thesis, University of Hertfordshire, 2014. http://hdl.handle.net/2299/14641.

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The thesis presents an experimental investigation of combustion performance and emissions of waste cooking oil (WCO) based biodiesel. To evaluate the comparative performance of biodiesel and diesel, combustions tests were conducted using Continuous Combustion rig (CCR) and Land Rover VM diesel engine. Firstly, physical properties of WCO biodiesel and diesel samples were measured in the laboratory. Elemental analysis of WCO biodiesel showed that there are differences between the functional groups in diesel and biodiesel which lead to major differences in the combustion characteristics of the two fuel types. It was found that biodiesel had 10% lower carbon content, almost no sulphur content for biodiesel and up to 12% more oxygen content compared with diesel. This explains the lower caloric value for WCO biodiesel (up to l8 %) compared with diesel. However, higher oxygen content and double bounds in WCO biodiesel increase its susceptibility to oxidation. The CCR test results showed an increase in combustion gas temperature with the increases in biodiesel blend ratio in diesel. This was due to a faster reaction rate for biodiesel than that of diesel leading to a faster brakeage of the hydrocarbon chain to release more heat. The engine tests were performed to measure the torque and emissions for different engine speeds and loads. In general a decrease in engine torque with up to 9% for biodiesel was observed, which was due to the lower calorific value of biodiesel compared with that of diesel. The brake specific fuel consumption (BSFC) increased as the biodiesel blend ratio in diesel increases due a greater mass of fuel being injected at a given injection pressure, compared with diesel. Using WCO blends ratio up to 75% in diesel showed a reduction in exhaust emission compared with diesel, however, at the cost of increased fuel consumption. A common conclusion can be drawn in favour of the WCO biodiesel as being a greener alternative to petro-diesel when used in blend with diesel. However, due to large variations in the biomass used for biodiesel production could lead to variations in physical and chemical properties between biodiesel produced from different biomass. Therefore more stringent standards need to be imposed for biodiesel quality in order to diminish the effect of variation in physicochemical properties on engine performance and emissions. The future work in developing standard test procedures for establishing fuel properties and limits/targets would be beneficial in using a large amount of waste cooking oil in the production of biodiesel, thus contributing to reduction in CO2 and waste minimisation.
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De, Castro Ana Maria. "Fatty acid methyl ester analysis of microbial communities in biofilters inoculated with different sources." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ28820.pdf.

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Hikosaka, Tomoyuki, Yasunori Hatta, Hidenobu Koide, Akina Yamazaki, Fumihiro Endo, Hitoshi Okubo, Tsutomu Nara, and Katsumi Kato. "Space Charge Behavior in Palm Oil Fatty Acid Ester (PFAE) by Electro-optic Field Measurement." IEEE, 2009. http://hdl.handle.net/2237/14538.

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Bollin, Patrick M. "The Production of Fatty Acid Methyl Esters in Lewis Acidic Ionic Liquids." University of Toledo / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1321507054.

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Books on the topic "Sugar fatty acid ester"

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Castro, Ana Maria De. Fatty acid methyl ester analysis of microbial communities in biofilters inoculated with different sources. Ottawa: National Library of Canada = Bibliothèque nationale du Canada, 1999.

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Fat and oil derivatives - Fatty Acid Methyl Esters (FAME): Determination of ester and linolenic acid methyl ester contents. BSI, 2003.

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Stearic Acid: Synthesis, Properties and Applications. Nova Science Publishers, Incorporated, 2014.

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Matsui, Mary Steidl. Fatty-acid induced modification of mouse embryo fibroblast C3H 10T1/2 cells: Lipid composition, benzo[a]pyrene metabolism and DNA adduct formation, malignant transformation, and phorbol ester binding. 1986.

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Skoutas, Demetrios. Responses of the chylomicron remnant marker, retinyl ester and apolipoprotein B-48 to meals ofvarying monousaturated fatty acid content in middle aged men. 1995.

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Book chapters on the topic "Sugar fatty acid ester"

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da Cruz Silvério, Sara Isabel, and Lígia Raquel Marona Rodrigues. "Biocatalysis in Ionic Liquids: Enzymatic Synthesis of Sugar Fatty Acid Esters." In Nanotechnology-Based Industrial Applications of Ionic Liquids, 51–79. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-44995-7_4.

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Peters, John C. "Sucrose Fatty Acid Ester (Olestra)." In Weight Control and Slimming Ingredients in Food Technology, 43–54. Oxford, UK: Wiley-Blackwell, 2009. http://dx.doi.org/10.1002/9780813819679.ch3.

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Goren, Mayer B. "Mycobacterial Fatty Acid Esters of Sugars and Sulfosugars." In Glycolipids, Phosphoglycolipids, and Sulfoglycolipids, 363–461. Boston, MA: Springer US, 1990. http://dx.doi.org/10.1007/978-1-4899-2516-9_5.

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He, Yunwen, Kiyoshi Wakimoto, Yang Xu, and Shengtao Li. "Partial Discharge Characteristics of Palm Fatty Acid Ester for Dissolved Gas Analysis." In Lecture Notes in Electrical Engineering, 752–62. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-31676-1_71.

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Kimura, Yukitaka, Yuriko Kobayashi, Shuji Adachi, and Ryuichi Matsuno. "Aminoacylase-Catalyzed Synthesis of N-Acyl Amino Acid from Fatty Acid or Its Ethyl Ester and Amino Acid." In Biochemical Engineering for 2001, 109–11. Tokyo: Springer Japan, 1992. http://dx.doi.org/10.1007/978-4-431-68180-9_27.

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Cavigelli, Michel A., G. Philip Robertson, and Michael J. Klug. "Fatty acid methyl ester (FAME) profiles as measures of soil microbial community structure." In The Significance and Regulation of Soil Biodiversity, 99–113. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0479-1_8.

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Sulaiman, Sarina. "Identification of Fatty Acid Methyl Ester in Palm Oil Using Gas Chromatography-Mass Spectrometer." In Multifaceted Protocol in Biotechnology, 63–74. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-2257-0_6.

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Aji, Aminah Qayyimah Mohd, and Mariyamni Awang. "Palm Fatty Acid Methyl Ester in Reducing Interfacial Tension in CO2–Crude Oil Systems." In ICIPEG 2016, 217–27. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-3650-7_18.

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Li, Junge, Xiaocao Yu, Bin Liu, Tiegang Hu, and Xibin Wang. "Experimental Research on Macroscopic and Microscopic Characteristics of Ethanol-Fatty Acid Methyl Ester Blends Sprays." In Lecture Notes in Electrical Engineering, 187–96. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-3527-2_17.

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Feutry, Sabine, Danielle Poder, Marijana Krsnik-Rasol, Jean François Menez, and Daniel Hagège. "Comparison of Fatty Acid Composition of Phospholipids in Normal and Habituated Sugar Beet Cell Lines." In Plant Lipid Metabolism, 441–43. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-015-8394-7_119.

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Conference papers on the topic "Sugar fatty acid ester"

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Rushworth, Martin, and Hon Seng Yee. "Enzyme Developments in Oleochemicals and Surfactants." In 2022 AOCS Annual Meeting & Expo. American Oil Chemists' Society (AOCS), 2022. http://dx.doi.org/10.21748/mzbr5365.

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Since the late 2010's Enzyme processing is being used to produce biodiesel methyl esters in over 31 commercial plants in all corners of the globe. The flexibility and high yield benefits of enzyme processing have driven this adoption of biotechnology. However esterification of triglycerides or fatty acids with methanol is only one of many possibilities for enzyme processing in oleochemistry. Commercially available enzyme technology are increasingly being used for a variety of processes including esterification, transesterification, hydrolysis and glycerolysis. Reactions can be driven either to the right or to the left by control of process conditions. Enzyme processing invariably reduces CO2 emissions compared with thermochemistry, improves product  purity by eliminating harmful side reactions, and reduces harmful effluent discharges into the world’s waterways. The door is now open for enzymes to displace thermochemistry for a variety of processes in the oleochemical industry. Whenever a hydroxyl moiety meets up with a carboxylic acid an enzymatic reaction can take place. Simple examples would be for simple emulsifiers and emollients such as isopropyl myristate or cetyl ricinoleate. Other examples would include the reaction of fatty acids with triethanolamine to produce mono or diesters of ethanolamine for use in skincare, as a building block for betaines, or as a feedstock for cationic surfactants. Less obvious and probably further out on the time horizon would be surfactants products from the esterification of saccharides with fatty acids or alcohols for sugar based surfactants and alkyl glucosides. As the oleochemical and surfactant industry moves from thermochemistry to biotechnology the world will see measurable improvements in GHG emissions, effluent discharges and sustainability.
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Mirghani, Mohamed, Adeeb Hayyan, Hanee Hizaddin, Mahar Diana Hamid, Jehad Saleh, M. Y. Zulkifli, Waleed Al Abdulmonem, Fahad Alhumaydhi, and Abdullah Aljohani. "Novel Encapsulated Ionic Liquid Analogous for Free Fatty Acid Conversion to Fatty Acid Methyl Ester." In 2022 AOCS Annual Meeting & Expo. American Oil Chemists' Society (AOCS), 2022. http://dx.doi.org/10.21748/vapq5899.

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The development of an efficient and green catalyst can be considered as a major contribution for the esterification of free fatty acid (FFA) in non-edible oil feedstocks. The DES was encapsulated in medical capsules for esterification of free fatty acid. The DES was synthesized from allyltriphenylphosphonium bromide (Allyl) and p-toluenesulfonic acid (PTSA). The FFA content was reduced to < 2 % under optimum conditions (catalyst dosage 2% (wt/wt) catalyst to oil, 10:1 molar ratio of oil to methanol at 60 °C for 60 min reaction time). The formation of a eutectic mixture endows the catalyst with advantages for esterification reaction such as improvements in recyclability and hygroscopicity of PTSA.
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Zhu, Chunhong, Jiangtong Song, and Jie Li. "Comparison of Fuel Properties between Diesel and Fatty Acid Methyl Ester." In 2015 International Conference on Materials, Environmental and Biological Engineering. Paris, France: Atlantis Press, 2015. http://dx.doi.org/10.2991/mebe-15.2015.121.

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"Exploratory of Palm Oil Based Catalyst to Produce Fatty Acid Methyl Ester." In International Conference on Biological, Chemical and Environmental Sciences. International Institute of Chemical, Biological & Environmental Engineering, 2014. http://dx.doi.org/10.15242/iicbe.c614030.

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Wey, Changlie, and Dan Bulzan. "Effects of Bio-Derived Fuels on Emissions and Performance Using a 9-Point Lean Direct Injection Low Emissions Concept." In ASME Turbo Expo 2013: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/gt2013-94888.

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A 9-Point Lean Direct low emissions combustor concept was utilized to evaluate gaseous emissions performance of two bio-derived alternative jet fuels and a JP-8 fuel for comparison. Gaseous emissions were measured in a flame tube operating at inlet temperatures from 650 up to 1030 F, pressures of 150, 250, and 350 psia, and a range of fuel/air ratios. The alternative fuels consisted of a Hydroprocessed Esters and Fatty Acids Fuel made from tallow and a second bio derived fuel produced from direct fermentation of sugar.
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Watanabe, Kenshi, Miho Nishijima, Shinzo Mayuzumi, and Tsunehiro Aki. "Utilization of sugar cane bagasse as a substrate for fatty acid production by Aurantiochytrium sp." In 2022 AOCS Annual Meeting & Expo. American Oil Chemists' Society (AOCS), 2022. http://dx.doi.org/10.21748/bptz2428.

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The genus Aurantiochytrium, a heterotrophic marine protist, produces significant amounts of polyunsaturated fatty acids and carotenoids and is promising as an alternative source of those lipids. This research aimed to utilize lignocellulosic biomass, which is abundant on land and does not compete with food supply, for fatty acid production by Aurantiochytrium limacinum strain SR21. Sugarcane bagasse soaked in diluted sulfuric acid was blasted by steam explosion and subsequently saccharified by the enzyme. When SR21 was cultivated in the medium containing saccharified liquid of sugarcane bagasse, the cell growth was almost abolished as compared with the control medium with the same glucose concentration, suggesting the presence of growth-inhibiting components in the saccharified liquid. The growth and fatty acid production of SR21 was significantly inhibited in the presence of furans and phenolic compounds previously reported to be generated by heat treatment of lignocellulosic biomass. Among them, furfural was detected in the bagasse saccharified liquid at the concentration that could inhibit the growth of SR21. Removal of such compounds by activated charcoal restored the cell growth and fatty acid productivity.
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Park, Mi Soon, Yu Jin Lee, and In-Hwan Kim. "Synthesis of Pinolenic Acid Enriched Triacylglycerol from Pine Nut Oil via a Two-step Consecutive Enzyme Reaction." In 2022 AOCS Annual Meeting & Expo. American Oil Chemists' Society (AOCS), 2022. http://dx.doi.org/10.21748/jlcw3538.

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Pinolenic acid (PLA), Δ‐5,9,12‐octadecatrienoic acid-C18:3, is a plant origin polyunsaturated fatty acid and is contained abundantly in pine nut oil. PLA has several health benefits, such as the reduction of atherosclerosis, inflammation, and blood pressure. In addition, PLA may work as an appetite suppressant by increasing the effect of satiety hormones, such as cholecystokinin and glucagon-like peptide-1. The aim of this study was to synthesize PLA-enriched TAG from pine nut oil via a two-step lipase-catalyzed reaction, which is ethanolysis and esterification. In the first step, PLA was enriched up to ca. 42% as ethyl ester form, from 14% in pine nut oil by Lipozyme 435-catalyzed ethanolysis with an excess amount of ethanol. In the second step, PLA-enriched TAG was synthesized with glycerol and two different acyl donors, PLA-enriched fatty acid and PLA-enriched ethyl ester via Lipozyme 435-catalyzed esterification under vacuum condition. The TAG conversion and reaction rate with fatty acid form were significantly higher than those with ethyl ester form. Thus, the effect of temperature and vacuum on the synthesis of PLA-enriched TAG were investigated with fatty acid form as an acyl donor. The optimum temperature and vacuum were 60 oC and 5 torr, respectively. The TAG conversion of approximately 95% was achieved after 12 h under the optimum conditions. In addition, fatty acid compositions of TAG synthesized at different reaction times were also explored.
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Azetsu, Akihiko, and Hiroomi Hagio. "Study on Spray Combustion Characteristics of Fatty Acid Methyl Ester Mixed with Diesel Oil." In SAE/JSAE 2014 Small Engine Technology Conference & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2014. http://dx.doi.org/10.4271/2014-32-0083.

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Yamamoto, S., K. Kato, F. Endo, Y. Hatta, H. Koide, and H. Okubo. "Kerr electro-optic field measurement in palm oil fatty acid ester transformer insulation system." In 2007 Annual Report - Conference on Electrical Insulation and Dielectric Phenomena. IEEE, 2007. http://dx.doi.org/10.1109/ceidp.2007.4451461.

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Helmiyati, H., and I. Masriah. "Preparation of cellulose/CaO-Fe2O3 nanocomposites as catalyst for fatty acid methyl ester production." In PROCEEDINGS OF THE 4TH INTERNATIONAL SYMPOSIUM ON CURRENT PROGRESS IN MATHEMATICS AND SCIENCES (ISCPMS2018). AIP Publishing, 2019. http://dx.doi.org/10.1063/1.5132489.

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Reports on the topic "Sugar fatty acid ester"

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LaScala, John J., Amutha Jeyarajasingam, Cherise Winston, James M. Sand, and Guiseppe R. Palmese. Predicting the Viscosity of Low VOC Vinyl Ester and Fatty Acid-Based Resins. Fort Belvoir, VA: Defense Technical Information Center, December 2005. http://dx.doi.org/10.21236/ada444349.

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Morris, Jr, Shardo Robert W., Higgins James, Cook Kim, Tanner Rhonda, West Sam, Shafer Zachary, Kelley Linda, and Jennifer. Evaluation of the Impact of Fatty Acid Methyl Ester (FAME) Contamination on the Thermal Stability of Jet A. Fort Belvoir, VA: Defense Technical Information Center, November 2013. http://dx.doi.org/10.21236/ada594760.

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Wilson, George R. Diesel Lubricity Additive Effect on Jet Fuel Thermal Oxidative Stability with Supplementary Information on Fatty Acid Methyl Ester and Jet Engine Nozzle Performance. Coordinating Research Council, Inc., August 2011. http://dx.doi.org/10.21813/crcav-03-04.

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Carpita, Nicholas C., Ruth Ben-Arie, and Amnon Lers. Pectin Cross-Linking Dynamics and Wall Softening during Fruit Ripening. United States Department of Agriculture, July 2002. http://dx.doi.org/10.32747/2002.7585197.bard.

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Our study was designed to elucidate the chemical determinants of pectin cross-linking in developing fruits of apple and peach and to evaluate the role of breakage cross-linkages in swelling, softening, and cell separation during the ripening. Peaches cell walls soften and swell considerably during the ripening, whereas apples fruit cells maintain wall firmness but cells separate during late stages of ripening. We used a "double-reduction" technique to show that levels of non-methyl esters of polyuronic acid molecules were constant during the development and ripening and decreased only in overripe fruit. In peach, methyl and non-methyl esters increased during the development and decreased markedly during the ripening. Non-methyl ester linkages in both fruit decreased accompanied fruit softening. The identity of the second component of the linkage and its definitive role in the fruit softening remain elusive. In preliminary examination of isolated apples cell walls, we found that phenolic compounds accumulate early in wall development but decrease markedly during ripening. Quantitative texture analysis was used to correlate with changes to wall chemistry from the fresh-picked ripe stage to the stage during storage when the cell separation occurs. Cell wall composition is similar in all cultivars, with arabinose as the principal neutral sugar. Extensive de-branching of these highly branched arabinans pre-stages softening and cell-cell separation during over-ripening of apple. The longer 5-arabinans remain attached to the major pectic polymer rhamnogalacturonan I (RG I) backbone. The degree of RG I branching, as judged from the ratios of 2-Rha:2,4-Rha, also decreases, specially after an extensive arabinan de-branching. Loss of the 4-Rham linkages correlated strongly with the softening of the fruit. Loss of the monomer or polymer linked to the RG I produce directly or indirectly the softening of the fruit. This result will help to understand the fruit softening and to have better control of the textural changes in fruit during the ripening and especially during the storage. 'Wooliness', an undesirable mealy texture that is induced during chilling of some peach cultivars, greatly reduces the fruit storage possibilities. In order to examine the hypothesis that the basis for this disorder is related to abnormality in the cell wall softening process we have carried out a comparative analysis using the resistant cultivar, Sunsnow, and a sensitive one, Hermosa. We investigated the activity of several pectin- and glycan-modifying enzymes and the expression of their genes during ripening, chilling, and subsequent shelf-life. The changes in carbohydrate status and in methyl vs. non-methyl uronate ester levels in the walls of these cultivars were examined as well to provide a basis for comparison of the relevant gene expression that may impact appearance of the wooly character. The activities of the specific polygalacturonase (PGase) and a CMC-cellulase activities are significantly elevated in walls of peaches that have become wooly. Cellulase activities correlated well with increased level of the transcript, but differential expression of PGase did not correspond with the observed pattern of mRNA accumulation. When expression of ethylene biosynthesis related genes was followed no significant differences in ACC synthase gene expression was observed in the wooly fruit while the normal activation of the ACC oxidase was partially repressed in the Hermosa wooly fruits. Normal ripening-related loss of the uronic acid-rich polymers was stalled in the wooly Hermosa inconsistent with the observed elevation in a specific PGase activity but consistent with PG gene expression. In general, analysis of the level of total esterification, degree of methyl esterification and level of non-methyl esters did not reveal any major alterations between the different fruit varieties or between normal and abnormal ripening. Some decrease in the level of uronic acids methyl esterification was observed for both Hermosa and Sunsnow undergoing ripening following storage at low temperature but not in fruits ripening after harvest. Our results support a role for imbalanced cell wall degradation as a basis for the chilling disorder. While these results do not support a role for the imbalance between PG and pectin methyl esterase (PME) activities as the basis for the disorder they suggest a possible role for imbalance between cellulose and other cell wall polymer degradation during the softening process.
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