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fish oil and oxidation

Cristian Encina, Gloria Márquez-Ruiz, Francisca Holgado, Begoña Giménez, Cristina Vergara, Paz Robert
Fish-oil (FO) was encapsulated with hydroxypropylcelullose (HPC) by conventional spray-drying with water (FO-water) and solvent spray-drying with ethanol (FO-EtOH), methanol (FO-MeOH) and acetone (FO-Acet) in order to study the effect of the solvent on the encapsulation efficiency (EE), microparticle properties and stability of FO during storage at 40 °C. Results showed that FO-Acet presented the highest EE of FO (92.0%), followed by FO-EtOH (80.4%), FO-MeOH (75.0%) and FO-water (71.1%). A decrease of the dielectric constant increased the EE of FO, promoting triglyceride-polymer interactions instead of oil-in-water emulsion retention...
October 15, 2018: Food Chemistry
Xujian Qiu, Charlotte Jacobsen, Ann-Dorit Moltke Sørensen
Lipid oxidation of fish oil enriched cow milk and soy milk supplemented with rosemary extract stored at 2 °C was studied. Both peroxide value and volatile secondary lipid oxidation products were determined to monitor the progress of lipid oxidation. Rosemary extract inhibited lipid oxidation in fish oil enriched cow milk. In contrast, soy milk samples having much higher unsaturated fatty acid content showed higher lipid oxidation stability compared to cow milk. Reduction in the content of chlorogenic acid during storage suggested that this compound may contribute to the lipid oxidation stability of fish oil enriched soy milk product...
October 15, 2018: Food Chemistry
Hye-Won Yum, Seong Hoon Kim, Jing X Kang, Young-Joon Surh
ω-3 polyunsaturated fatty acids (PUFAs), which are abundant in some fish oils, are known to scavenge lipid peroxyl radicals and increase host immunoresponsiveness. As UVB-induced oxidative stress and inflammation have been implicated in apoptotic cell death, this study was designed to investigate the anti-inflammatory, anti-oxidative, and anti-apoptotic capacity of fat-1 transgenic mice capable of converting ω-6 to ω-3 PUFAs. Wild-type (WT) C57BL/6 mice and fat-1 mice were maintained on the AIN-93 diet supplemented with 10% safflower oil rich in ω-6 PUFAs for 5 weeks...
May 15, 2018: Biochemical and Biophysical Research Communications
Aline Haas de Mello, Rosiane de Bona Schraiber, Mariana Pereira de Souza Goldim, Michelle Lima Garcez, Maria Luiza Gomes, Gustavo de Bem Silveira, Rubya Pereira Zaccaron, Patrícia Fernanda Schuck, Josiane Budni, Paulo Cesar Lock Silveira, Fabricia Petronilho, Gislaine Tezza Rezin
This study evaluated the effects of omega-3 on inflammation, oxidative stress, and energy metabolism parameters in the brain of mice subjected to high-fat diet-induced obesity model. Body weight and visceral fat weight were evaluated as well. Male Swiss mice were divided into control (purified low-fat diet) and obese (purified high-fat diet). After 6 weeks, the groups were divided into control + saline, control + omega-3, obese + saline, and obese + OMEGA-3. Fish oil (400 mg/kg/day) or saline solution was administrated orally, during 4 weeks...
May 4, 2018: Molecular Neurobiology
Vanessa Danthiir, Diane E Hosking, Ted Nettelbeck, Andrew D Vincent, Carlene Wilson, Nathan O'Callaghan, Eva Calvaresi, Peter Clifton, Gary A Wittert
Background: Fish oil trials in cognitively healthy older adults have yielded inconsistent results. Supplementation may differentially affect the domains that underpin cognitive performance, and effects may differ across sex or genotype. Objective: The aim of this study was to test whether docosahexaenoic acid (DHA)-rich fish oil slows 18-mo cognitive decline in cognitively healthy elders. Design: In a double-blind, randomized, placebo-controlled, parallel-group trial, cognitively healthy Australian community-dwelling adults (aged 65-90 y) consumed either 1720 mg DHA and 600 mg eicosapentaenoic acid or low-polyphenolic olive oil daily, as capsules, for 18 mo...
May 1, 2018: American Journal of Clinical Nutrition
Ako Shibata, Mariko Uemura, Masashi Hosokawa, Kazuo Miyashita
Fish oil rich in docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA) is known to have an unpleasant smell, even at low oxidation levels. Therefore, it is highly important to know the major volatiles formed during the early stages of fish oil oxidation. Comparative study with solid-phase microextraction (SPME) and static headspace (SHS) methods showed that 2-propenal (acrolein) was formed as the major volatile from the beginning of fish oil triacylglycerol (TAG) oxidation. The effectiveness of SPME extraction on each volatile was different from each fiber...
2018: Journal of Oleo Science
Oluwatosin Adetola Arojojoye, Ademola Adetokunbo Oyagbemi, Jeremiah Moyinoluwalogo Afolabi
This study evaluated the environmental safety of Igbokoda River, a popular fishing hub in an oil producing area in Nigeria. Biomarkers of oxidative stress and heavy metals were determined in the liver and muscle of Clarias gariepinus from Igbokoda River and also in fish samples from a clean fish farm (control). Water samples from both sites were analysed for physicochemical parameters, heavy metals and bacterial contamination. There was significant increase in the level of heavy metals in water samples and in the organs of fish from Igbokoda River...
April 26, 2018: Bulletin of Environmental Contamination and Toxicology
Mariangela Rondanelli, Milena Anna Faliva, Alessandra Miccono, Maurizio Naso, Mara Nichetti, Antonella Riva, Fabio Guerriero, Manuela De Gregori, Gabriella Peroni, Simone Perna
Emerging literature suggests that diet constituents may play a modulatory role in chronic pain (CP) through management of inflammation/oxidative stress, resulting in attenuation of pain. We performed a narrative review to evaluate the existing evidence regarding the optimum diet for the management of CP, and we built a food pyramid on this topic. The present review also describes the activities of various natural compounds contained in foods (i.e. phenolic compounds in extra-virgin olive oil (EVO)) listed on our pyramid, which have comparable effects to drug management therapy...
June 2018: Nutrition Research Reviews
Natália Angelo da Silva Miyaguti, Sarah Christine Pereira de Oliveira, Maria Cristina Cintra Gomes-Marcondes
In this study, we hypothesized that throughout the pregnancy/weaning period, nutritional supplementation with leucine (which improves protein synthesis) and/or fish oil (rich in omega-3, which modulates oxidative stress) can minimize/improve cachexia-induced damage in rat offspring. Thus, we investigated the maternal supplementation with these nutrients over the modulation of cachexia index and liver function in tumor-bearing rats offspring. Pregnant rats were fed control, leucine, omega-3, and leucine/omega-3 diets, which were given throughout the gestational and weaning periods...
March 2018: Nutrition Research
Karen Triff, Mathew W McLean, Evelyn Callaway, Jennifer Goldsby, Ivan Ivanov, Robert S Chapkin
Dietary fermentable fiber generates short-chain fatty acids (SCFA), e.g., butyrate, in the colonic lumen which serves as a chemoprotective histone deacetylase inhibitor and/or as an acetylation substrate for histone acetylases. In addition, n-3 polyunsaturated fatty acids (n-3 PUFA) in fish oil can affect the chromatin landscape by acting as ligands for tumor suppressive nuclear receptors. In an effort to gain insight into the global dimension of post-translational modification of histones (including H3K4me3 and H3K9ac) and clarify the chemoprotective impact of dietary bioactive compounds on transcriptional control in a preclinical model of colon cancer, we generated high-resolution genome-wide RNA (RNA-Seq) and "chromatin-state" (H3K4me3-seq and H3K9ac-seq) maps for intestinal (epithelial colonocytes) crypts in rats treated with a colon carcinogen and fed diets containing bioactive (i) fish oil, (ii) fermentable fiber (a rich source of SCFA), (iii) a combination of fish oil plus pectin or (iv) control, devoid of fish oil or pectin...
April 16, 2018: International Journal of Cancer. Journal International du Cancer
Trinidad Pérez-Palacios, Jorge Ruiz, Estefanía Jiménez-Martín, Juan Carlos Solomando, Teresa Antequera
BACKGROUND: The omega-3 enrichment of ready-to-cook meat products by microencapsulated fish oil addition was analyzed in this study. For that, three batches of chicken nuggets were prepared: control (C), enriched in bulk fish oil (BFO) and with added microencapsulated fish oil (MFO). Sensory features, acceptability, oxidative stability and volatile compounds were analyzed. RESULTS: MFO nuggets did not differ in any sensory trait with C ones. BFO showed increased juiciness and saltiness but decreased meat flavor...
April 15, 2018: Journal of the Science of Food and Agriculture
Shengqi Dong, Xiaochen Huang, Jie Zhen, Nicholas Van Halm-Lutterodt, JiaJia Wang, Cui Zhou, Linhong Yuan
Quite a number of studies have examined the effects of fish oil supplementation on cognitive performance in different transgenic animal models of Alzheimer's disease (AD). However, inconsistent and controversial outcomes have been derived from these experiments. In order to investigate whether the beneficial effect of fish oil supplementation on cognition was dietary VE status associated, fish oil dietary intervention was carried out in transgenic APPswe /PS1dE9 (APP/PS1) mice. Control mice (C57BL/6J mice) were fed a normal control diet...
April 14, 2018: Molecular Neurobiology
Dante Selenscig, María Del Rosario Ferreira, Adriana Chicco, Yolanda B Lombardo
This work aims to assess the possible beneficial effects of dietary fish oil (FO) on the pre-existing adipose tissue dysfunction through the improvement or reversion of the mechanisms underlying oxidative stress and pro-inflammatory cytokines in dyslipemic insulin-resistant rats. Wistar rats were fed a sucrose rich diet (SRD) for 6 months. After that half of the animals continued with the SRD until month 8 while in the other half corn oil was replaced by FO for 2 months (SRD + FO). A reference group consumed a control diet all the time...
April 25, 2018: Food & Function
Jennifer R Loughery, Karen A Kidd, Angella Mercer, Chris J Martyniuk
Phenanthrene is a tricyclic polycyclic aromatic hydrocarbon and environmental contaminant found in high concentrations around urban catchments and in the vicinity of oil extraction activities. Fish exposed to phenanthrene can exhibit altered reproductive hormone profiles and/or differences within gonadosomatic index and altered gamete proportions, but the mechanisms underlying these changes are not fully understood. In this study, we conducted a sub-chronic bioassay and measured transcriptional responses in the liver, the major tissue involved in generating lipids for oocyte growth...
March 23, 2018: Aquatic Toxicology
F Mayyas, R Jaradat, K H Alzoubi
BACKGROUND AND AIMS: Fish oil (FO) is rich in omega-3 polyunsaturated fatty acids, which have cardio-protective effects. This study aims to evaluate effects of FO in a rat model of streptozotocin (STZ) induced diabetes. METHODS AND RESULTS: Adults male Wistar rats were assigned to control (4 μl corn oil/g corn oil given by oral gavage), FO (4 μl Menhaden FO/g body weight given by oral gavage), diabetes (DM, 35 mg/kg STZ single intraperitoneal injection, corn oil), and DM + FO groups for 8 weeks...
February 25, 2018: Nutrition, Metabolism, and Cardiovascular Diseases: NMCD
Edgar Hell Kampke, Maria Eduarda de Souza Barroso, Franciane Martins Marques, Marcio Fronza, Rodrigo Scherer, Mayara Fumiere Lemos, Bianca Prandi Campagnaro, Levy Carvalho Gomes
"Erva cidreira" (Lippia alba (Mill.) N. E. Brown) is popular for its therapeutic properties, especially its sedative properties. Such properties led to the discovery of the anesthetic action of Lippia alba essential oil in fish culture. The objective of this study was to evaluate the genotoxic effect of Lippia alba essential oil in fish and mammals. The oil was extracted by hydrodistillation with a Clevenger apparatus and analyzed by gas chromatography coupled to mass spectrometry (GC-MS), where the compounds linalool, eucalyptol, γ-muurolene, and caryophyllene were identified as the most abundant compounds...
March 26, 2018: Environmental Toxicology and Pharmacology
Amanda Rundblad, Kirsten B Holven, Inge Bruheim, Mari C Myhrstad, Stine M Ulven
Marine n -3 (omega-3) fatty acids alter gene expression by regulating the activity of transcription factors. Krill oil is a source of marine n -3 fatty acids that has been shown to modulate gene expression in animal studies; however, the effect in humans is not known. Hence, we aimed to compare the effect of intake of krill oil, lean and fatty fish with a similar content of n -3 fatty acids, and high-oleic sunflower oil (HOSO) with added astaxanthin on the expression of genes involved in glucose and lipid metabolism and inflammation in peripheral blood mononuclear cells (PBMC) as well as circulating inflammatory markers...
2018: Journal of Nutritional Science
Editha Giese, Ole Winkelmann, Sascha Rohn, Jan Fritsche
Fish oil is becoming increasingly popular as a dietary supplement as well as for its use in animal feed, which is mainly due to its high contents of the health promoting omega-3 fatty acids. However, these polyunsaturated fatty acids are highly susceptible to oxidation, which results in a decrease of the fish oil quality. This study investigated the potential of1 H NMR, FT-MIR, and FT-NIR spectroscopy in the quality assessment of fish oils. A total of 84 different fish oils, of which 22 were subjected to accelerated storage with varying temperature and light exposure, were used to develop models for predicting the peroxide value (PV), the anisidine value (AnV), and the acid value (AV)...
April 2018: Food Research International
Tahra El-Obeid, Hany M Yehia, Hercules Sakkas, Louisa Lambrianidi, Maria I Tsiraki, Ioannis N Savvaidis
The present study examined the effect of natural antimicrobials: Chitosan, thyme oil and their combination, on the shelf-life of smoked eel fillets stored under vacuum packaging (VP) at 4 °C. Based on sensory odor data smoked eel fillets had a shelf-life of 35 (control), 42 (thyme treated and > 49 (thyme, chitosan-thyme treated) days. The thiobarbituric acid value (TBA) value of the control eel sample was significantly higher than the chitosan-thyme-treated eel samples. The use of chitosan singly, or in combination with thyme oil reduced lipid oxidation (TBA) of the smoked eel samples...
March 22, 2018: International Journal of Biological Macromolecules
Betül Yesiltas, Ann-Dorit Moltke Sørensen, Pedro J García-Moreno, Sampson Anankanbil, Zheng Guo, Charlotte Jacobsen
Sodium caseinate (CAS) and commercial sodium alginate (CA), long chain modified alginate (LCMA) or short chain modified alginate (SCMA) were used in combination for emulsifying and stabilizing high fat (50-70%) fish oil-in-water emulsions. Physical (creaming, droplet size, viscosity and protein determination) and oxidative (primary and secondary oxidation products) stabilities of the emulsions were studied during 12 days of storage. Creaming stability was higher for emulsions produced with alginates and CAS compared to emulsions prepared with only CAS...
July 30, 2018: Food Chemistry
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