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fish oil and oxidation

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https://www.readbyqxmd.com/read/28526935/diabetes-induced-abnormalities-of-mitochondrial-function-in-rat-brain-cortex-the-effect-of-n-3-fatty-acid-diet
#1
Maria Chomova, Maria Balazova, Jana Muchova
Diabetic encephalopathy, a proven complication of diabetes is associated with gradually developing end-organ damage in the CNS increasing the risk of stroke, cognitive dysfunction or Alzheimer's disease. This study investigated the response of rat cortical mitochondria to streptozotocin-induced diabetes and the potential for fish oil emulsion (FOE) to modulate mitochondrial function. Diabetes-induced deregulation of the respiratory chain function as a result of diminished complex I activity (CI) and cytochrome c oxidase hyperactivity was associated with attenuation of antioxidant defense of isolated cortical mitochondria, monitored by SOD activity, the thiol content, the dityrosine and protein-lipid peroxidation adduct formation...
May 19, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28515386/autoxidation-of-fish-oil-blended-with-rice-bran-oil
#2
Shigeo Nakajima, Marie Takai, Chieko Hayashi, Takuo Tsuno, Yasushi Endo
Effects of rice bran oil on the oxidative and flavor stability of fish oil were investigated by the gas liquid chromatography-head space method. When fish oil blending with different ratio of rice bran oils was oxidized at room temperature in the dark, volatile compounds produced during autoxidation was measured by gas liquid chromatography. The amounts of volatile compounds were decreased with increased the ratio of blended rice bran oil as well as peroxide value. The level of propanal and acrolein which gave unpleasant flavor was also decreased with increased the ratio of blended rice bran oil...
May 17, 2017: Journal of Oleo Science
https://www.readbyqxmd.com/read/28506517/fish-oil-supplementation-benefits-the-murine-host-during-the-acute-phase-of-a-parasitic-infection-from-trypanosoma-cruzi
#3
Maria I Lovo-Martins, Aparecida D Malvezi, Rosiane V da Silva, Nágela G Zanluqui, Vera L H Tatakihara, Niels O S Câmara, Ana Paula L de Oliveira, Jean P S Peron, Marli C Martins-Pinge, Kevin L Fritsche, Phileno Pinge-Filho
Long-chain omega-3 polyunsaturated fatty acids (LC n-3 PUFA) are known to modulate a variety of immune cell functions. On occasion, this has led to diminished host resistance to certain viral and bacterial infections. Little is known about the impact of n-3 PUFA on host resistance to parasitic infection, however, based on results from a small study conducted more than two decades ago, we hypothesized that providing mice LC n-3 PUFA will diminish host resistance to Trypanosoma cruzi, the parasitic pathogen responsible for Chagas disease...
April 25, 2017: Nutrition Research
https://www.readbyqxmd.com/read/28504166/functionality-of-chitosan-in-batter-formulations-for-coating-of-fish-sticks-effect-on-physicochemical-quality
#4
K A Martin Xavier, Hauzoukim, Nagalakshmi Kannuchamy, Amjad K Balange, M K Chouksey, Venkateshwarlu Gudipati
Chitosan is a natural polymer having diverse applications in food industry. The present study was undertaken to evaluate chitosan as a hydrocolloid in batter composition in developing enrobed fish sticks with better functional properties and improved quality. Different concentrations of chitosan gel were made in acetic acid medium and incorporated into batter for making enrobed fish sticks. Coating parameters, fat uptake, oil reduction, chemical quality parameters, instrumental texture analysis and colour were studied...
August 1, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28490088/antioxidant-activities-of-aqueous-extract-from-stevia-rebaudiana-stem-waste-to-inhibit-fish-oil-oxidation-and-identification-of-its-phenolic-compounds
#5
Hui Yu, Gangqiang Yang, Minoru Sato, Toshiyasu Yamaguchi, Toshiki Nakano, Yinci Xi
We investigated the potential for exploiting Stevia rebaudiana stem (SRS) waste as a source of edible plant-based antioxidants finding for the first time that the hot water extract of SRS had significantly higher antioxidant activity against fish oil oxidation than that of the leaf, despite SRS extract having lower total phenolic content, DPPH radical scavenging activity and ORAC values. To locate the major antioxidant ingredients, SRS extract was fractionated using liquid chromatography. Five phenolic compounds (primary antioxidant components in activity-containing fractions) were identified by NMR and HR-ESI-MS: vanillic acid 4-O-β-d-glucopyranoside (1), protocatechuic acid (2), caffeic acid (3), chlorogenic acid (4) and cryptochlorogenic acid (5)...
October 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28488192/effects-of-dietary-green-tea-camellia-sinensis-l-supplementation-on-growth-performance-lipid-metabolism-and-antioxidant-status-in-a-sturgeon-hybrid-of-sterlet-huso-huso-%C3%A2-%C3%A2-%C3%A3-%C3%A2-acipenser-ruthenus-%C3%A2-fed-oxidized-fish-oil
#6
Soleiman Hasanpour, Amir Parviz Salati, Bahram Falahatkar, Hamid Mohammadi Azarm
Lipid content of diet is very susceptible to oxidation, especially when stored for a long time, so for evaluating protective effects of green tea in fish received oxidized oil, this study was done. Lipid content of diet was replaced by oxidized fish oil (OFO) in 0, 50, and 100%. Green tea extract (GTE) was added to diet in three levels, 0, 5, and 100 mg/kg giving a total of nine experimental diets. Two hundred and seventy sturgeon hybrid of Sterlet (Huso huso ♀ × Acipenser ruthenus ♂) with initial weight of 212...
May 10, 2017: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/28487227/melaleuca-alternifolia-essential-oil-nanoparticles-ameliorate-the-hepatic-antioxidant-oxidant-status-of-silver-catfish-experimentally-infected-with-pseudomonas-aeruginosa
#7
Carine F Souza, Matheus D Baldissera, Naiara S Guarda, Yãnaí S Bollick, Rafael N Moresco, Isabel Cristina M Brusque, Roberto C V Santos, Bernardo Baldisserotto
Oxidative stress has been recognized as a conjoint pathological mechanism that contributes to initiation and progression of liver injury, such as that caused by bacterial diseases. Natural antioxidants are considered a rational curative strategy to prevent and cure hepatic diseases involved with oxidative stress. Thus, the aim of this study was to evaluate, for the first time, whether treatment with bactericidal Melaleuca alternifolia essential oil (TTO) nanoparticles prevents or reduces the hepatic damage in silver catfish (Rhamdia quelen) experimentally infected with Pseudomonas aeruginosa (PAO1)...
May 6, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28469193/omega-3-long-chain-polyunsaturated-fatty-acid-content-and-oxidation-state-of-fish-oil-supplements-in-new-zealand
#8
Gerard Bannenberg, Craig Mallon, Holly Edwards, Derek Yeadon, Kevin Yan, Holly Johnson, Adam Ismail
Forty-seven fish oil products available on the New Zealand market were analyzed for eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) content, as well as for oxidative status in a collaborative effort by several analytical laboratories. Of the tested products, 72%, 86% and 77% complied with voluntary industry-set maximum limits on Peroxide Value (PV), para-Anisidine Value (p-AV), and TOTOX, respectively. 91% of the products complied with EPA/DHA content claims. All fish oils complied with a p-AV limit of 30, 98% with a PV limit of 10 meq O2/kg, and 96% with a calculated TOTOX value of 50, which are less stringent limits used by the European and British Pharmacopeia and the Australian authorities...
May 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28460917/healthy-spanish-salchich%C3%A3-n-enriched-with-encapsulated-n-3-long-chain-fatty-acids-in-konjac-glucomannan-matrix
#9
Jose M Lorenzo, Paulo Eduardo Sichetti Munekata, Mirian Pateiro, Paulo Cezar Bastianello Campagnol, Ruben Domínguez
Reduction of fat content and improving fatty acid composition were the strategies used to reformulate Spanish salchichón with better lipid content by partial substitution of pork backfat by microencapsulated fish oil in konjac glucomannan matrix. For the present study, four different batches were manufactured: control (CO) with 100% of pork backfat and ME25, ME50 and ME75 where the pork backfat was replaced with 25, 50 and 75% by microencapsulated fish oil, respectively. The fat replacement by microencapsulated fish oil was accompanied by a decrease (P<0...
November 2016: Food Research International
https://www.readbyqxmd.com/read/28455142/a-fish-oil-diet-induces-mitochondrial-uncoupling-and-mitochondrial-unfolded-protein-response-in-epididymal-white-adipose-tissue-of-mice
#10
Shylesh Bhaskaran, Archana Unnikrishnan, Rojina Ranjit, Rizwan Qaisar, Gavin Pharaoh, Stephanie Matyi, Michael Kinter, Sathyaseelan S Deepa
White adipose tissue (WAT) mitochondrial dysfunction is linked to the pathogenesis of obesity driven insulin resistance. Dietary conditions that alter fat mass are known to affect white adipocyte mitochondrial function, however, the impact of high calorie diets on white adipocyte mitochondria is not fully understood. The aim of this study is to assess the effect of a diet rich in saturated or polyunsaturated fat on mitochondrial unfolded protein response (UPR(mt)), a retrograde signaling response that maintains mitochondrial homeostasis, in epididymal WAT (eWAT)...
April 26, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28449985/encapsulation-of-fish-oil-into-hollow-solid-lipid-micro-and-nanoparticles-using-carbon-dioxide
#11
Junsi Yang, Ozan Nazim Ciftci
Fish oil was encapsulated in hollow solid lipid micro- and nanoparticles formed from fully hydrogenated soybean oil (FHSO) using a novel green method based on atomization of supercritical carbon dioxide (SC-CO2)-expanded lipid. The highest fish oil loading efficiency (97.5%, w/w) was achieved at 50%, w/w, initial fish oil concentration. All particles were spherical and in the dry free-flowing form; however, less smooth surface with wrinkles was observed when the initial fish oil concentration was increased up to 50%...
September 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28420234/raman-spectroscopy-of-fish-oil-capsules-polyunsaturated-fatty-acid-quantitation-plus-detection-of-ethyl-esters-and-oxidation
#12
Daniel P Killeen, Susan N Marshall, Elaine J Burgess, Keith C Gordon, Nigel B Perry
Fish oils are the primary dietary source of ω-3 polyunsaturated fatty acids (PUFA), but these compounds are prone to oxidation, and commercial fish oil supplements sometimes contain less PUFA than claimed. These supplements are predominantly sold in softgel capsules. In this work, we show that Fourier transform (FT)-Raman spectra of fish oils (n = 5) and ω-3 PUFA concentrates (n = 6) can be acquired directly through intact softgel (gelatin) capsules. These spectra could be used to rapidly distinguish supplements containing ethyl esters from those containing triacylglyceride oils...
April 24, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28408132/comparison-of-the-effects-of-major-fatty-acids-present-in-the-mediterranean-diet-oleic-acid-docosahexaenoic-acid-and-in-hydrogenated-oils-elaidic-acid-on-7-ketocholesterol-induced-oxiapoptophagy-in-microglial-bv-2-cells
#13
Meryam Debbabi, Amira Zarrouk, Maryem Bezine, Wiem Meddeb, Thomas Nury, Asmaa Badreddine, El Mostafa Karym, Randa Sghaier, Lionel Bretillon, Stéphane Guyot, Mohammad Samadi, Mustapha Cherkaoui-Malki, Boubker Nasser, Mondher Mejri, Sofien Ben-Hammou, Mohamed Hammami, Gérard Lizard
Increased levels of 7-ketocholesterol (7KC), which results mainly from cholesterol auto-oxidation, are often found in the plasma and/or cerebrospinal fluid of patients with neurodegenerative diseases and might contribute to activation of microglial cells involved in neurodegeneration. As major cellular dysfunctions are induced by 7KC, it is important to identify molecules able to impair its side effects. Since consumption of olive and argan oils, and fish is important in the Mediterranean diet, the aim of the study was to determine the ability of oleic acid (OA), a major compound of olive and argan oil, and docosahexaenoic acid (DHA) present in fatty fishes, such as sardines, to attenuate 7KC-induced cytotoxic effects...
April 10, 2017: Chemistry and Physics of Lipids
https://www.readbyqxmd.com/read/28394715/protective-effects-of-oil-of-sardinella-pilchardis-against-subacute-chlorpyrifos-induced-oxidative-stress-in-female-rats
#14
Mongi Saoudi, Ines Ben Hmida, Wassim Kammoun, Faouzi Ben Rebah, Kamel Jamoussi, Abdelfattah El Feki
This study was conducted to evaluate the protective effects of Sardinella pilchardis oil and vitamin E against chlorpyrifos- (CPF-) induced liver, kidney, and brain oxidative damage in female rats. The rats were divided into 6 experimental groups: the control group, the group treated with fish oil, the group that received fish oil for 2 weeks and CPF orally for 7 days, the group treated only with CPF, the group treated with vitamin E for 2 weeks and CPF for 7 days, and the group treated with vitamin E. Oral exposure to CPF induced a significant increase in serum biochemical parameters; hepatic, kidney, and brain LPO; and a decrease in superoxide dismutase, catalase, and glutathione peroxidase activities...
April 10, 2017: Archives of Environmental & Occupational Health
https://www.readbyqxmd.com/read/28391860/lipidomic-analysis-for-carbonyl-species-derived-from-fish-oil-using-liquid-chromatography-tandem-mass-spectrometry
#15
Joon Hyuk Suh, Yue S Niu, Wei-Lun Hung, Chi-Tang Ho, Yu Wang
Lipid peroxidation gives rise to carbonyl species, some of which are reactive and play a role in the pathogenesis of numerous human diseases. Oils are ubiquitous sources that can be easily oxidized to generate these compounds under oxidative stress. In this present work, we developed a targeted lipidomic method for the simultaneous determination of thirty-five aldehydes and ketones derived from fish oil, the omega-3 fatty acid-rich source, by using liquid chromatography-tandem mass spectrometry (LC-MS/MS). The analytes include highly toxic reactive carbonyl species (RCS) such as acrolein, crotonaldehyde, trans-4-hydroxy-2-hexenal (HHE), trans-4-hydroxy-2-nonenal (HNE), trans-4-oxo-2-nonenal (ONE), glyoxal and methylglyoxal, all of which are promising biomarkers of lipid peroxidation...
June 1, 2017: Talanta
https://www.readbyqxmd.com/read/28389917/a-green-analytical-chemistry-approach-for-lipid-extraction-computation-methods-in-the-selection-of-green-solvents-as-alternative-to-hexane
#16
Mari Merce Cascant, Cassandra Breil, Salvador Garrigues, Miguel de la Guardia, Anne Silvie Fabiano-Tixier, Farid Chemat
There is a great interest in finding alternatives and green solvents in extraction processes to replace petroleum based solvents. In order to investigate these possibilities, computational methods, as Hansen solubility parameters (HSP) and conductor-like screening model for real solvent (COSMO-RS), were used in this work to predict the solvation power of a series of solvents in salmon fish lipids. Additionally, experimental studies were used to evaluate the performance in lipids extraction using 2-methyltetrahydrofurane, cyclopentyl methyl ether, dimethyl carbonate, isopropanol, ethanol, ethyl acetate, p-cymene and d-limonene compared with hexane...
April 7, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28385237/prosopis-alba-exudate-gum-as-novel-excipient-for-fish-oil-encapsulation-in-polyelectrolyte-bead-system
#17
Franco Emanuel Vasile, María Alicia Judis, María Florencia Mazzobre
In this work, a bottom-up approach based on the study of polyelectrolyte interactions was performed in order to evaluate the effect of Prosopis alba exudate gum as novel excipient for fish oil encapsulation in composed calcium-alginate-chitosan beads. Emulsion and beads properties such as oil distribution, encapsulation efficiency, yield, microstructure and thermo-oxidative protection were evaluated. Alginate and gum exert a synergistic effect on emulsion stability properties, which conducted to better oil distribution in the beads and higher encapsulation efficiencies (98%) and yield (89%)...
June 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28382280/anti-cancer-mechanism-of-docosahexaenoic-acid-in-pancreatic-carcinogenesis-a-mini-review
#18
REVIEW
Mirae Park, Hyeyoung Kim
Pancreatic cancer is a highly aggressive malignant tumor of the digestive system and radical resection, which is available to very few patients, might be the only possibility for cure. Since therapeutic choices are limited at the advanced stage, prevention is more important for reducing incidence in high-risk individuals with family history of pancreatic cancer. Epidemiological studies have shown that a high consumption of fish oil or ω3-polyunsaturated fatty acids reduces the risk of pancreatic cancers. Dietary fish oil supplementation has shown to suppress pancreatic cancer development in animal models...
March 2017: Journal of Cancer Prevention
https://www.readbyqxmd.com/read/28376347/overview-of-avian-toxicity-studies-for-the-deepwater-horizon-natural-resource-damage-assessment
#19
S J Bursian, C R Alexander, D Cacela, F L Cunningham, K M Dean, B S Dorr, C K Ellis, C A Godard-Codding, C G Guglielmo, K C Hanson-Dorr, K E Harr, K A Healy, M J Hooper, K E Horak, J P Isanhart, L V Kennedy, J E Link, I Maggini, J K Moye, C R Perez, C A Pritsos, S A Shriner, K A Trust, P L Tuttle
The Oil Pollution Act of 1990 establishes liability for injuries to natural resources because of the release or threat of release of oil. Assessment of injury to natural resources resulting from an oil spill and development and implementation of a plan for the restoration, rehabilitation, replacement or acquisition of natural resources to compensate for those injuries is accomplished through the Natural Resource Damage Assessment (NRDA) process. The NRDA process began within a week of the Deepwater Horizon oil spill, which occurred on April 20, 2010...
April 1, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28374423/effect-of-6-gingerol-on-physicochemical-properties-of-grass-carp%C3%A2-ctenopharyngodon-idellus-surimi-fortified-with-perilla-oil-during-refrigerated-storage
#20
Hongbo Mi, Bo Zhao, Cong Wang, Shumin Yi, Yongxia Xu, Jianrong Li
BACKGROUND: Surimi is produced from deboned fish muscle through being washed to remove blood, lipids, sarcoplasmic proteins, and other impurities. There is an increasing interest in the fortification of surimi with ω-3 PUFAs because of their health benefits. However, lipid oxidation should be considered as an important factor during storage. Hence, in this study, the quality properties and oxidative stability of surimi fortified with 30 g kg(-1) perilla oil (PO), or 5 g kg(-1) 6-gingerol (GI) or their combination (PO+GI) was investigated...
April 4, 2017: Journal of the Science of Food and Agriculture
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