Enzymatic and Chemical Modification of Fatty Acid Methyl Esters: Enzymatic Catalysis of Methyl Linoleate Using Soybean Lipoxygenase and Chemical Catal
Enzymatic and Chemical Modification of Fatty Acid Methyl Esters: Enzymatic Catalysis of Methyl Linoleate Using Soybean Lipoxygenase and Chemical CatalEnzymatic and Chemical Modification of Fatty Acid Methyl Esters: Enzymatic Catalysis of Methyl Linoleate Using Soybean Lipoxygenase and Chemical Catal free download book
- Author: Matthew John Scholten
- Published Date: 11 May 2012
- Publisher: Proquest, Umi Dissertation Publishing
- Language: English
- Format: Paperback::62 pages
- ISBN10: 1248981995
- ISBN13: 9781248981993
- Country Charleston SC, United States
- File size: 54 Mb
- Dimension: 203x 254x 4mm::141g
Book Details:
The enzymes are also capable of oxygenation of the fatty acid methyl esters into -hydroxy fatty acid methyl esters and often show strong a recombinant Saccharomyces cerevisiae expressing soybean lipoxygenase and watermelon fatty acids and carboxylic acids using a linoleate Reaction mechanism involves two steps: Firstly, saturated and insaturated methyl esters present in the mixture of FAMEs from vegetable oils react with H2O2 to form the corresponding peracid, secondly peracid spontaneously donates the oxygen to a double bond of the unsaturated FAMEs (methyl oleate and methyl linoleate Linoleic acid, which is a linear and small fatty acid, showed a different behavior, and the loss of dissipation was more significant for this fatty acid upon LOX oxidation. Probably, the modified LA, which is more hydrophilic, engages in hydrogen bonding with the primary alcohols on CNF and, as a result, the lipid adsorbs more densely. See discussions, stats, and author profiles for this publication Application of lipoxygenases and related Noté 0.0/5. Retrouvez Enzymatic and Chemical Modification of Fatty Acid Methyl Esters: Enzymatic Catalysis of Methyl Linoleate Using Soybean Lipoxygenase and Chemical Catal et des millions de livres en stock sur Achetez neuf ou d'occasion 9780878450770 0878450777 Questions and answers - strategies for using the electronic reference collection:Clinic on Library Applications of Data Processing, 1987, Clinic on Library Applications of Data Processing 1981 University of, Linda C. Smith, University of with augmented catalytic activity and specifically with chemically modified fatty acid substrates (16, the following sources: arachidonic acid methyl ester 5(R/S)-HETE from Cayman Chemical (Ann Arbor, arachidonate, methyl linoleate) the wild-type enzyme reticulocytes and soybeans (28, 29). Ke Zhao, Bang Chen, Cong Li, Chao shuang Xia, Xing fu Li, Ke bin Li and Ye hua Shen, Optimization of epoxidation of ricinoleic acid methyl ester hydrogen peroxide and phase transfer catalyst using response surface methodology, European Journal of Lipid Science and Technology, 119, 11, (2017). Brits M, de Boer J, Rohwer ER, De Vos J, Weiss JM, Brandsma SH. Short-, medium-, and long-chain chlorinated paraffins in South African indoor dust and cat hair. Chemosphere. 2019 The highest fatty acid methyl esters (FAMEs) yield achieved was 98 0.5% within 1-2min at a temperature of 360-450 C under ambient pressure. The fast reaction rates made it possible to convert the lipid feedstock into biodiesel via a continuous flow system without the application of increased pressure. Journal qf Chrotnatogruph~~. Rj Elsevier Science Publishers 611 (1992) B47lL8584 B.V. Amsterdam. All rights reserved Bibliography Section Liqu Enzymatic and Chemical Modification of Fatty Acid Methyl Esters: Enzymatic Catalysis of Methyl Linoleate Using Methyl Esters: Enzymatic Catalysis of Methyl Linoleate Using Soybean Lipoxygenase and Chemical Catal. Oil~ uonumics: An Onn"'.r, James M. Siamon and Judy K. Blumenfeld Keywords: Catalytic oxidation / Enzyme-catalyzed oxidation / Fatty acids / Triacylglycerols Du et al. Examined the epoxidation of methyl linoleate with 4 mol-%. Methyl Ester Production via Heterogeneous Acid-Catalyzed Simultaneous Transesterification and Esterification Reactions. NASA Astrophysics Data System (ADS) Indrayanah, S.; Erwin; Abstract. The remarkable advances made during the last decade in organic synthesis, catalysis, and biotechnology using plant oils and the basic oleochemicals derived from them will be reported, including, for example, -functionalization of fatty acids containing internal double bonds, application of the olefin metathesis reaction, Full text of "Harper's Illustrated Biochemistry( 26th Ed, 2003)" See other formats Enzymatic and Chemical Modification of Fatty Acid Methyl Esters: Enzymatic Catalysis of Methyl Linoleate Using Soybean Lipoxygenase and Chemical Catal. There are two ways which selectivity can be improved during optimization: a chemical modification of the lead compound that improves the affinity towards the target to a higher extent than to off-target molecules, and a chemical modification that lowers the affinity of Production of hydroxy fatty acids microbial fatty acid-hydroxylation enzymes. They have antibiotic, anti-inflammatory, and anticancer activities and therefore can be applied for medicinal uses. Microbial fatty acid-hydroxylation enzymes, including P450, lipoxygenase, hydratase, 12-hydroxylase, and diol synthase otic more soluble, a hydrophilic group needs to be added to the xenobiotlc. Of the possible answer choices, only glucuronic acid (glucose with a carboxylic acid at posltlon 6 instead of an alcohol group) is a hydrophilic molecule. Glucuronic acid is added to the xenobiotic at position 1, using the activated intermediate UDPglucuronate. For a long time it was considered that the carboxyl groups in fatty acids were important for enzymatic recognition and binding,however, Harris and coworkers reported,that glycerol esters of phosphatidyl choline group, methyl linoleate and linoleiyl alcohol were also excellent substrates of the enzyme, albeit with greatly reduced activity. Based on the above concept two research groups have reported their findings regarding lipoxygenase catalyzed asymmetric oxygenation Linoleic acid is the most abundant lipoxygenase substrate in nature. It is present in 54% ( weight) in soybean oil and in 68% in sulflower oil [14]. Tall oil fatty acid (TOFA), which is derived from the pine oil -product of kraft pulping process, is a non-crop source of linoleic acid. The extracted triglycerides were transesterified into fatty acid methyl esters (FAMEs) using Novozyme 435 as the biocatalyst in DMC. Herein, DMC was used as the reaction medium and acyl acceptor. The reaction conditions were optimized and the FAMEs yield was 293.82 mg FAMEs/g biomass in 6 h of reaction time at 60 C in the presence of 0.2% Already in 1967 the three-dimensional structure had been determined with high resolution W. Lipscomb and his group. In the meantime much is known about the catalybc mechanism. The essential features are discussed here briefly to improve the understanding of how enzymes work. Two aspects of enzymatic catalysis can be illustrated this (6) Studies have shown that in enzymatic catalysis, volatile organic acid (DHA), were purchased from the Cayman Chemical, USA. Octanoic acid methyl ester, dodecane, decanoic acid methyl ester, Whitehead, I. M.; Muller, B. L.; Dean, C. Industrial use of soybean lipoxygenase for the production of A facile capillary electrophoresis (CE) method for the separation of cinnamic acid and its derivatives (3,4-dimethoxycinnamic acid, 4-methoxycinnamic acid, isoferulic acid, sinapic acid, cinnamic acid, ferulic acid, and trans-4-hydroxycinnamic acid) using graphene quantum dots (GQDs) as additives with direct ultraviolet (UV) detection is Enzymatic and chemical modification of fatty acid methyl esters: enzymatic catalysis of methyl linoleate using soybean lipoxygenase and chemical catalysis of It was found that high conversions of methyl oleate and methyl linoleate to their respective oxidation products, as well as the total selectivity of their oxidation products to oxirane The inflammatory response represents a first line of defense against invading pathogens and is important to human health. Chronic inflammation contributes to the etiology of multiple diseases, especially those associated with aging, such as cancer and cardiovascular disease. The chemistry of the inflammatory response is complex and involves the generation of highly reactive oxidants and
Links:
An Investigation of the Effects of Correlation and Autocorrelation in Classifier Fusion with Non-Declarations
Download PDF Football Friends