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K Jørgensen et al.
Zeitschrift fur Lebensmittel-Untersuchung und -Forschung, 196(5), 423-429 (1993-05-01)
Carotenoid scavenging of free radicals has been investigated in peroxidizing methyl esters of unsaturated fatty acids using (i) metmyoglobin as a water-based free-radical initiator in a heterogeneous lipid/water system, and (ii) azo-bis-isobutyronitrile as a free-radical initiator in a homogeneous chloroform
De-pei Wang et al.
Wei sheng wu xue bao = Acta microbiologica Sinica, 46(1), 74-79 (2006-04-04)
A 459 bp DNA fragment was amplified from Thamnidium elegans As3.2806 with degenerate oligonucleotides primers designed based on the sequences information from the conserved histidine-rich motifs II and near III of fungal delta6-fatty acid desaturases genes by RT-PCR and sequenced.
Muneyuki Maekawa et al.
Chemical research in toxicology, 19(1), 130-138 (2006-01-18)
We searched for mutagens that react with 2'-deoxyguanosine (dGuo) in model systems of lipid peroxidation. To autoxidation systems of methyl linoleate (model of omega-6 fat), methyl alpha-linolenate (MLN) (model of omega-3 fat), and commercial salad oil, dGuo was added. The
Photoaddition of angelicin to linolenic acid methyl ester.
S Caffieri et al.
Journal of photochemistry and photobiology. B, Biology, 2(4), 515-521 (1988-12-01)
Caroline P Baron et al.
Free radical research, 39(7), 777-785 (2005-07-23)
Protection against protein oxidation by lipophilic and hydrophilic antioxidants in model systems using bovine serum albumin (BSA) in solution alone, or in an emulsion with linolenic acid methyl ester (LnMe) was found to be strongly dependent on the oxidation initiator.
T A Misharina et al.
Prikladnaia biokhimiia i mikrobiologiia, 46(5), 599-604 (2010-11-11)
Stability of components of a mixture of methyl linolenoate and methyl oleinate with two lemon (Citrus limon L.) essential oils in hexane during their autooxidation in light was studied by gas chromatography. The essential oils differed by their quantitative ratio
A A Gallon et al.
Lipids, 28(2), 125-133 (1993-02-01)
The autoxidation of polyunsaturated fatty acids is initiated both in vivo and in vitro by nitrogen dioxide. The mechanism of the initiation process is believed to involve both addition reactions and hydrogen atom abstraction reactions, with hydrogen abstraction predominating at
G M Huber et al.
Journal of food science, 74(9), C693-C700 (2010-05-25)
Lipid oxidation, especially the oxidation of polyunsaturated fatty acids, is a significant issue in the food industry impacting both food quality and health of consumers. Apple skin was investigated as a source of natural antioxidants. The phenolic compound composition and
G Márquez-Ruiz et al.
Journal of chromatography. A, 1165(1-2), 122-127 (2007-08-21)
A new method based on high-performance size-exclusion chromatography (HPSEC) is proposed to quantitate primary and secondary oxidation compounds in model fatty acid methyl esters (FAMEs). The method consists on simply injecting an aliquot sample in HPSEC, without preliminary isolation procedures
Dan-Dan Feng et al.
The Journal of endocrinology, 196(2), 377-384 (2008-02-07)
Free fatty acids (FFAs) regulate insulin secretion in a complex pattern and induce pancreatic beta-cell dysfunction in type 2 diabetes. Voltage-dependent Ca2+ channels (VDCC) in beta-cells play a major role in regulating insulin secretion. The aim of present study is
H H Refsgaard et al.
Proceedings of the National Academy of Sciences of the United States of America, 97(2), 611-616 (2000-01-19)
The ability of unsaturated fatty acid methyl esters to modify amino acid residues in bovine serum albumin (BSA), glutamine synthetase, and insulin in the presence of a metal-catalyzed oxidation system [ascorbate/Fe(III)/O(2)] depends on the degree of unsaturation of the fatty
J T MacGregor et al.
Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association, 23(12), 1041-1047 (1985-12-01)
Nine hydroperoxy and hydroperoxy-epidioxy oxidation products derived from either autoxidation (AO) or photosensitized oxidation (PO) of methyl linoleate (MLo) or methyl linolenate (MLn) were tested for mutagenic activity by the Salmonella typhimurium his+ reversion assay using strains TA100, TA98, TA102
Oier Aizpurua-Olaizola et al.
Journal of food science, 80(1), E101-E107 (2014-12-05)
In this study, supercritical fluid extraction has been successfully applied to a sequential fractionation of fatty acids and polyphenols from wine wastes (2 different vitis vinifera grapes). To this aim, in a 1st step just fatty acids were extracted and
Xian-Guo Zou et al.
Journal of agricultural and food chemistry, 62(43), 10594-10603 (2014-10-10)
In the present study, a human milk fat substitute (HMFS) enriched in medium-chain fatty acids (MCFAs) was synthesized through acidolysis reaction from Cinnamomum camphora seed oil (CCSO) with oleic acid in a solvent-free system. A commercial immobilized lipase, Lipozyme RM
Philippe Lesot et al.
Analytical chemistry, 80(8), 2963-2972 (2008-03-11)
The quantitative determination of isotopic (2H/1H)i ratios at natural abundance using the SNIF-NMR protocol is a well-known method for understanding the enzymatic biosynthesis of metabolites. However, this approach is not always successful for analyzing large solutes and, specifically, is inadequate
Yunbao Liu et al.
Journal of natural products, 73(7), 1193-1195 (2010-06-23)
Antioxidants scavenge free radicals, singlet oxygen, and electrons in cellular redox reactions. The yellow MTT [3-(4,5-dimethylthiazole-2-yl)-2,5-diphenyltetrazolium bromide] is reduced to a purple formazan by mitochondrial enzymes. NADPH is the basis of established in vitro cell viability assays. An antioxidant assay
Saori Okuda et al.
Journal of agricultural and food chemistry, 53(24), 9624-9628 (2005-11-24)
The purpose of this research was to examine the influence of the physical state of lipids on iron-promoted oxidation of methyl linolenate in octadecane oil-in-water emulsions. Octadecane and methyl linolenate oil-in-water emulsions were prepared that contained droplets having the octadecane
Emmanuel Richaud et al.
Chemistry and physics of lipids, 165(7), 753-759 (2012-10-03)
This study deals with oxidation kinetics of three unsaturated fatty esters: methyl oleate, methyl linoleate and methyl linolenate at temperatures ranging from 90 to 150 °C. The reaction was monitored by chemiluminescence. A kinetic model was derived from a simple
H P Vasantha Rupasinghe et al.
Molecules (Basel, Switzerland), 15(1), 251-257 (2010-01-30)
The antioxidant properties of two apple dihydrochalcones, namely phloretin and phloridzin, were evaluated and compared with those of alpha-tocopherol and butylated hydroxytoluene (BHT). The effects were studied in an oil-in-water emulsion system containing methyl linolenate (ML), methyl eicosapentaenoate (MEPA), and
T Iio et al.
Life sciences, 40(24), 2297-2302 (1987-06-15)
Secondary oxidative products of autoxidized methyl linoleate were divided into three groups (SP-I, SP-II and SP-III), which were then compared as to their abilities to form fluorescent substances and to degrade heme. SP-III showed a marked ability to produce two
Patrícia Baptista et al.
Analytica chimica acta, 607(2), 153-159 (2008-01-15)
Biodiesel is the main alternative to fossil diesel. The key advantages of its use are the fact that it is a non-toxic renewable resource, which leads to lower emissions of polluting gases. European governments are targeting the incorporation of 20%
S Satchithanandam et al.
Journal of AOAC International, 84(3), 805-813 (2001-06-22)
There is currently no official method for the analysis of fatty acids (including trans fatty acids) in infant formulas. AOAC Official Method 996.01 for Fat Analysis in Cereal Products was extended to the analysis of milk-based infant formula Standard Reference
Rosario Zamora et al.
Journal of agricultural and food chemistry, 51(16), 4661-4667 (2004-01-07)
The oxidation of methyl linoleate (LMe) and methyl linolenate (LnMe) in the presence of bovine serum albumin (BSA) in the dark at 60 degrees C was studied to analyze the role of the type of fatty acid and the protein/lipid
William Y Boadi et al.
Journal of applied toxicology : JAT, 23(5), 363-369 (2003-09-17)
The single and combined effects of two abundant flavonoids, namely quercetin and genistein, were investigated according to their ability to inhibit the oxidation of methyl linolenate via Fenton's pathway. Antioxidative activity was determined by oxidizing methyl linolenate suspended in a
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