2— fatty acid salts

chương 2: độ acid

Ngày tải lên : 28/08/2013, 08:12

... m acid methyl cam nh CaCO3 Vì CaCO3 có ng l ng 50, dung d ch N/50 NaOH c s d ng làm ch t nh phân, ó mL t ng ng v i mg acid acid phenolphthalein khi, c n ph i o acid t ng c ng c a acid vơ c acid ... qu nh phân m u n c n i m k t thúc phenolphthalein v i pH 8,3 xác nh c acid vơ c acid acid y u gây nên acid t ng c ng có tên acid phenolphthalein ThS: Huỳnh Ngọc Phương Mai © Copyright 2006 gree-vn.com, ... cho t t c m c ích th c t u i m tính Acid Methyl Cam T t c n c thiên nhiên h u h t lo i n c th i cơng nghi p có pH th p h n u có acid vơ c ho c acid methyl cam Acid vơ c c n c trung hòa t i th i...

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FATTY ACID COMPOSITION INCLUDING TRANS FATTY ACIDS CONTENT OF SELECTED VIETNAMESE INSTANT NOODLES

Ngày tải lên : 28/08/2013, 16:28

... monounsaturated fatty acids * TFA: trans fatty acids * tc: traceal 818 Fatty acid composition including trans fatty acids content of selected Vietnamese instant noodles Trans fatty acids were also ... total fatty acid methyl ester Values are means ± SD for three samples of triplicates * Fatty acids less than 0.1%: C15:0, C17:0, C21:1 * SFA: saturated fatty acids * PUFA: polyunsaturated fatty acids ... total fatty acid methyl ester Values are means ± SD for three samples of triplicates * Fatty acids less than 0.1%: C15:0, C17:0, C21:1 * SFA: saturated fatty acids * PUFA: polyunsaturated fatty acids...

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Characterization of the Carbon Stable Isotope Ratio and Fatty Acid Structure of Zostera japonica in Coastal Areas

Ngày tải lên : 05/09/2013, 10:17

... the typical fatty acids of Z japonica HK 45 40 35 30 25 20 15 10 MG NG KT KG Fatty acid content (%) Fatty acid content (%) However, we think that the characteristics of the fatty acid structure ... Fatty acids 18:3n3 other HK 45 40 35 30 25 20 15 10 16:0 MG 18:1n9c 18:2n6c 18:3n3 24:0 Fatty acids NG KT KG LCFAs other Fig.3 Dominant fatty acid content in the leaves Fig - Dominant fatty acid ... Acid Methyl Esters Mix (47080-U, SUPELCO, USA); and kinds of long-chain fatty acids (LCFAs) These standards were used to obtain 56 kinds of fatty acids Therefore, the contents of each fatty acid...

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Effect of unsaturated fatty acid esters of biodiesel fuels on combustion, performance and emission characteristics of a DI diesel engine

Ngày tải lên : 05/09/2013, 15:28

... Environment (IJEE), Volume 1, Issue 3, 2010, pp.411-430 415 Table Fatty acid methyl composition of different biodiesel fuels Fatty acid methyl ester composition (FAME) in wt % Lino- LinoLauric Myristic ... unsaturated fatty acid composition has more density but less viscosity Biodiesel with more unsaturated has lower cetane number and heating value respectively Biodiesel with high-unsaturated fatty acid ... sources are not same, those properties have strong relation with the fatty acid composition of biodiesel The structure of the fatty compounds can also affect other properties of biodiesel such...

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Tài liệu Chương 2: Amino acid - Đơn vị cấu tạo Protein pdf

Ngày tải lên : 22/12/2013, 15:16

... người ta xem Cys amino acid không thay 1.2.4 Các amino acid gặp Ngoài amino acid thường gặp trên, phân tử protein có số amino acid khác, loại gặp Các amino acid dẫn xuất amino acid thường gặp như: ... natri với acid glutamic (monosodium glutamate) 1.4 Tính tan amino acid Các amino acid thường dễ tan nước, amino acid khó tan alcohol ether (trừ proline hydrogenxyproline), chúng dễ hoà tan acid kiềm ... amino acid thủy phân protein 2.1 Thủy phân acid 24 Để thu nhận amino acid phương pháp thường dùng nhiều thuỷ phân acid HCL 6N dư thừa nhiệt độ 100-120oC khoảng 24 Sản phẩm thu chủ yếu amino acid...

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THÀNH PHẦN hợp CHẤT AXÍT béo và CAROTENOID của gấc fatty acid and carotenoid composition of gac (momordica cochinchinensisspreng) fruit

Ngày tải lên : 09/02/2014, 00:08

... Fatty Acid and Carotenoids in Gac Fruit MATERIALS AND METHODS Fatty Acid Analysis Materials Gac fruit were purchased from two Asian ... Louis, MO) Nonadecanoic acid methyl ester and GLC-68 fatty acid methyl ester (FAME) standard mixture were obtained from Nu-Chek Prep, Inc (Elysian, MN) Heptadecanoic acid methyl ester and anhydrous ... addition, double-bond locations for the unsaturated fatty acids were determined by interpreting spectra from picolinyl derivatives of free fatty acids (FFAs), employing the methodology described...

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Tài liệu Báo cáo khoa học: Interruption of triacylglycerol synthesis in the endoplasmic reticulum is the initiating event for saturated fatty acid-induced lipotoxicity in liver cells pdf

Ngày tải lên : 14/02/2014, 22:20

... shown that different forms of fatty acids exert remarkably different effects Exposure of a variety of cell types, including hepatocytes, to long-chain saturated fatty acids (SFAs) led to increased ... with fatty acids for 48 h, and cleavage of procaspase-3 was evaluated in total cell extracts by western blotting (F) The appearance of cytochrome c in the cytosolic fractions (S-100) of fatty acid- treated ... After their internalization, FFAs are converted to fatty acyl-CoA, a reaction catalyzed by ACS Fatty acyl-CoAs are activated forms of fatty acids that can be either oxidized in mitochondria or...

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Tài liệu Báo cáo khoa học: Fatty acid synthesis Role of active site histidines and lysine in Cys-His-His-type b-ketoacyl-acyl carrier protein synthases ppt

Ngày tải lên : 19/02/2014, 08:20

... polypeptide structure revealed electron density corresponding to a fatty acid bound to all four C163 residues in the asymmetric unit The fatty acid residues were included in the model and reﬁned The structure ... of rat fatty acid synthase by C75: inhibition of partial reactions and protection by substrates Biochem J 388, 895–903 Alli PM, Pinn ML, Jaffee EM, McFadden JM & Kuhajda FP (2005) Fatty acid synthase ... malonyl-ACP binding area in the fatty acid complex The hydrogen bond between the L335 backbone nitrogen and H333 Nd makes it unlikely that H333 participates in catalysis as an acid or base Compared with...

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Tài liệu Báo cáo khoa học: Fatty acid desaturases from the microalga Thalassiosira pseudonana pptx

Ngày tải lên : 20/02/2014, 01:20

... three times Fatty acid analysis Microalgae or yeast cells were harvested by centrifugation Total fatty acids were extracted and transmethylated as previously described [14] Fatty acid methyl ... These fatty acids are produced by D6-desaturation of 16:1D9 and 18:1D9, respectively, the two major fatty acids found in yeast When linoleic (18:2D9,12) and a-linolenic (18:3D9,12,15) acids were ... However, comparison of fatty acid proﬁles derived from yeast transformed with pYES2 and pYDESI showed two new peaks in the TpdesI transformants even in the absence of exogenous fatty acids in the medium...

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Tài liệu Báo cáo Y học: Inactivation of the 2-oxo acid dehydrogenase complexes upon generation of intrinsic radical species pptx

Ngày tải lên : 21/02/2014, 01:21

... pharmacology of the antioxidant lipoic acid Gen Pharmacol 29, 315–331 Bunik, V & Follmann, F (1993) Thioredoxin reduction dependent on a-keto acid oxidation by a-keto acid dehydrogenase complexes FEBS ... reaction with the lipoic acid radical [19,20] and the reduction of oxygen to superoxide anion radical [21–23] Involvement of such processes in catalysis by the 2-oxo acid dehydrogenase complexes ... 2-oxo acid dehydrogenase complexes [28], that could also take place in vivo upon site-speciﬁc production of ROS via the complex-bound FAD In vitro and in situ inactivation of the 2-oxo acid dehydrogenase...

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Báo cáo khoa học: Peptides from puriﬁed soybean b-conglycinin inhibit fatty acid synthase by interaction with the thioesterase catalytic domain pot

Ngày tải lên : 06/03/2014, 09:22

... inhibit fatty acid synthase C Martinez-Villaluenga et al Introduction Fatty acid synthase (FAS, EC 3.2.1.85) is a multicomponent enzyme that catalyzes the de novo biosynthesis of long-chain fatty acids ... kDa) carries seven catalytic domains integrating all the steps needed for fatty acid synthesis [2,3] The growing fatty acid is covalently attached to an acyl carrier protein (ACP), which transports ... (2004) Human fatty acid synthase: structure and substrate selectivity of the thioesterase domain Proc Natl Acad Sci USA 101, 15567– 15572 Smith S & Tsai SC (2007) The type I fatty acid and polyketide...

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Báo cáo khoa học: Mutants of Saccharomyces cerevisiae deﬁcient in acyl-CoA synthetases secrete fatty acids due to interrupted fatty acid recycling docx

Ngày tải lên : 07/03/2014, 05:20

... extracellular fatty acids In addition, we determined the amount of lipid-bound fatty acids to cover all major pools of fatty acids (Fig 1B,D) The amount of cellular free fatty acids could be ... (square)] (D) Concentration of fatty acids in the pools of free fatty acids in the media (diamonds), of free fatty acids in the cells (square) and of esteriﬁed fatty acids (triangle) The error bars ... extracellular fatty acids Therefore, besides the import of exogenous fatty acids, additional release of internal fatty acids had to contribute to the increase of intracellular fatty acids However,...

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Báo cáo khoa học: Spatio-temporal distribution of fatty acid-binding protein 6 (fabp6) gene transcripts in the developing and adult zebraﬁsh (Danio rerio) pptx

Ngày tải lên : 07/03/2014, 06:20

... they were initially isolated, e.g livertype fatty acidbinding protein (L-FABP), brain-type fatty acidbinding protein (B-FABP), intestinal-type fatty acidbinding protein (I-FABP), etc However, ... FABPs: (a) uptake of fatty acids across the plasma membrane and transport to various subcellular organelles, (b) modulation of the activity of enzymes involved in fatty acid metabolism, (c) protection ... membranes from the detergent effects of excess fatty acids by sequestering them, and (d) modulation of cell growth and differentiation by transport of fatty acids to the nucleus where they activate...

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Báo cáo khoa học: New application of ﬁreﬂy luciferase ) it can catalyze the enantioselective thioester formation of 2-arylpropanoic acid docx

Ngày tải lên : 07/03/2014, 10:20

... Ketoprofen Naproxen 2-phenyIbutanoic acid Tropic acid 2-phenylpentanoic acid 2-phenyl-3-methylbutanoic acid 2-(4-chlorophenoxy)propanoic acid 2-methyl-3-phenylpropanoic acid Photinus pyralis Luciola ... corresponding acid ND, not detected Entry Substrate Origin of luciferase Recovered acid (% ee) Thioester (% ee) 6 10 11 12 13 14 15 2-phenyIpropanoic acid 2-phenyIpropanoic acid 2-phenyIpropanoic acid ... 2-arylpropanoic acid, racemic 2-phenylpropanoic acid, which has the simplest structure of 2-arylpropanoic acids, was selected as a substrate and the enantiomeric excess (ee) of the unreacted acid and...

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Báo cáo khoa học: Functional characterization of front-end desaturases from trypanosomatids depicts the ﬁrst polyunsaturated fatty acid biosynthetic pathway from a parasitic protozoan ppt

Ngày tải lên : 07/03/2014, 12:20

... polyunsaturated fatty acid (PUFA) biosynthesis FAD, fatty acid desaturase; Elo, elongase; Elo5, D5 elongase; Elo6, D6 elongase; AA, arachidonic acid; EPA, eicosapentaenoic acid; DHA, docosahexaenoic acid ... Polyunsaturated fatty acid biosynthesis: a microsomal-peroxisomal process Prostaglandins Leukot Essent Fatty Acids 60, 317–321 Pereira SL, Leonard AE & Mukerji P (2003) Recent advances in the study of fatty ... the conversion of the omega3 -fatty acid, eicosapentaenoic acid, into docosahexaenoic acid Biochem J 384, 357–366 Chu FL, Lund ED, Harvey E & Adlof R (2004) Arachidonic acid synthetic pathways of...

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Báo cáo khoa học: Escherichia coli cyclopropane fatty acid synthase Mechanistic and site-directed mutagenetic studies potx

Ngày tải lên : 07/03/2014, 16:20

... a-methylketo- or a-methylhydoxy- fatty acids [35,36] However, it quickly appeared that addition of a sulfur ylide, derived from S-AdoMet, to the double bond of the fatty acid could be another plausible ... Pollard, M & Ohlrogges, J.B (2002) Carbocyclic fatty- acids in plants: Biochemical and molecular genetic characterization of cyclopropane fatty acid synthesis of Sterculia foetida Proc Natl Acad ... on the biosynthesis of cyclopropane fatty acids in Escherichia coli Biochimica Biophysica Acta 348, 6375 Taylor, F.R & Cronan J.E (1979) Cyclopropane fatty acid synthase of Escherichia coli Stabilization,...

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Báo cáo Y học: Mechanism of 1,4-dehydrogenation catalyzed by a fatty acid (1,4)-desaturase of Calendula ofﬁcinalis pptx

Ngày tải lên : 08/03/2014, 09:20

... with 50% acetic acid to pH and the fatty acids were extracted with · mL hexane The hexane was removed under a nitrogen stream and the mixture, including the conjugated fatty acids, was esteriﬁed ... for conjugated fatty acid esters (10% w/v KOH/CH3OH, 80 °C, h; neutralization to pH with acetic acid, hexane extraction, 1% w/v H2SO4/ CH3OH, 50 °C, h) Analysis of the fatty acids as methyl ... the formation of a-eleostearic acid [9(Z),11(E),13(E)-octadecatrienoic acid] and a-parinaric acid [9(Z),11(E),13(E),15(Z)-octadecatetraenoic acid] from linoleic acid In so doing, we would hope...

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Báo cáo Y học: Restoring enzyme activity in nonfunctional low erucic acid Brassica napus fatty acid elongase 1 by a single amino acid substitution pdf

Ngày tải lên : 08/03/2014, 09:20

... then acidiﬁed with M HCl Free fatty acids were extracted in hexane, the solvent removed under a stream of N2, and the free fatty acids were transmethylated in M methanolic HCl for h at 80 °C Fatty ... isomers of very long chain unsaturated fatty acids in transgenic yeast by GC/MS Book of Abstracts, p 29 Biochemistry and Molecular Biology of Plant Fatty Acids and Glycerolipids Symposium, June ... fertility, encodes a very-long-chain fatty acid condensing enzyme Plant Cell 11, 825–838 15 Todd, J., Post-Beittenmiller, D & Jaworski, J.G (1999) KCS1 encodes a fatty acid elongase 3-ketoacyl-CoA synthase...

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Báo cáo khoa học: Differential tissue-speciﬁc distribution of transcripts for the duplicated fatty acid-binding protein 10 (fabp10) genes in embryos, larvae and adult zebraﬁsh (Danio rerio) docx

Ngày tải lên : 16/03/2014, 00:20

... utilization of fatty acids, intracellular targeting of fatty acids to speciﬁc organelles and metabolic pathways, and the protection of cellular structures from the detergent effects of fatty acids [10–14] ... heart-type fatty acid binding protein in cardiac fatty acid utilization FASEB J 13, 805–812 Schaap FG, Binas B, Danneberg H, van der Vusse GJ & Glatz JFC (1999) Impaired long-chain fatty acid utilization ... Moerkerk HTB (1993) Fatty acidbinding protein and its relation to fatty acid oxidation Mol Cell Biochem 123, 101–106 15 Glatz JF & van der Vusse GJ (1996) Cellular fatty acidbinding proteins:...

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Báo cáo khoa học: Discovery of GSK837149A, an inhibitor of human fatty acid synthase targeting the b-ketoacyl reductase reaction pot

Ngày tải lên : 16/03/2014, 06:20

... structure of yeast fatty acid synthase, a cellular machine with eight active sites working together Cell 129, 319 331 1565 zquez et al M J Va GSK837149A, inhibitor of human fatty acid synthase White ... (2005) The structural biology of type II fatty acid biosynthesis Annu Rev Biochem 74, 791831 Chirala SS, Jayajumar A, Gu ZW & Wajil SJ (2001) Human fatty acid synthase: role of interdomain in the ... movements in human fatty acid synthase by quantized elastic deformational model Proc Natl Acad Sci USA 99, 78957899 Maier T, Jenni S & Ban N (2006) Architecture of mam malian fatty acid synthase at...

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