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Olive oil lipid

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https://read.qxmd.com/read/30764563/treatment-of-two-phase-olive-mill-wastewater-and-recovery-of-phenolic-compounds-using-membrane-technology
#1
Varvara Sygouni, Alexis G Pantziaros, Iakovos C Iakovides, Evangelia Sfetsa, Polychronia I Bogdou, Emilia A Christoforou, Christakis A Paraskeva
The semi-solid wastes (pomace or alperujo) produced in the two-phase olive oil extraction process contains extremely high organic load and phenolic substances. Efficient treatment of such kinds of wastes using membrane filtration, should be sought to reduce the hazardous effects to the environment. On the other hand, phenolic compounds can be isolated and purified up to a level of commercial exploitation using the membrane technology. Firstly, the extraction process with mixtures of water and ethanol was optimized by testing extraction parameters (e...
February 5, 2019: Membranes
https://read.qxmd.com/read/30759889/r-verniciflua-and-e-ulmoides-extract-ilf-re-protects-against-chronic-ccl%C3%A2-induced-liver-damage-by-enhancing-antioxidation
#2
Hwa-Young Lee, Geum-Hwa Lee, Young Yoon, Han-Jung Chae
This study aimed to characterize the protective effects of R. verniciflua extract (ILF-R) and E. ulmoides extract (ILF-E), the combination called ILF-RE, against chronic CCl₄-induced liver oxidative injury in rats, as well as to investigate the mechanism underlying hepatoprotection by ILF-RE against CCl₄-induced hepatic dysfunction. Chronic hepatic stress was induced via intraperitoneal (IP) administration of a mixture of CCl₄ (0.2 mL/100 g body weight) and olive oil [1:1(v/v)] twice a week for 4 weeks to rats...
February 12, 2019: Nutrients
https://read.qxmd.com/read/30740755/olive-oil-inhibits-aging-signs-induced-by-chronic-stress-in-ex-vivo-human-skin-via-inhibition-of-the-extracellular-signal-related-kinase-1-2-and-c-jun-pathways
#3
Bruna Romana-Souza, Andréa Monte-Alto-Costa
OBJECTIVE: Chronic stress-induced oxidative damage and protease synthesis cause a loss of extracellular matrix components promoting human skin aging. The administration of antioxidant compounds, such as those observed in olive oil, may attenuate stress-induced aging signs in human skin. Thus, the aim of this study was to investigate the effect of olive oil administration in ex vivo stressed human skin. METHODS: Explants of human skin were treated with high levels of epinephrine (as observed in stressed patients) and olive oil in medium for 13 days...
February 10, 2019: International Journal of Cosmetic Science
https://read.qxmd.com/read/30739376/new-generation-fish-oil-and-olive-oil-lipid-on-prevention-of-oxidative-damage-in-preterm-infants
#4
Hilal Ozkan, Nilgün Köksal, Bayram Ali Dorum, Fatma Kocael, Yesim Ozarda, Pelin Doğan, Ipek Guney Varal, Onur Bagci
BACKGROUND: Parenteral nutrition (PN) has been widely used in preterm infants. Lipid solutions used for PN were reported to be associated with oxidative stress and related morbidities. The aim of this study was to compare the effectiveness of new generation lipid emulsion (SMOFLipid) and olive-oil based lipid emulsion for prevention of PN associated oxidative damage. METHODS: Preterm infants <32 gestational age were included to this prospective randomized study...
February 10, 2019: Pediatrics International: Official Journal of the Japan Pediatric Society
https://read.qxmd.com/read/30697750/control-of-antioxidant-efficiency-of-chlorogenates-in-emulsions-modulation-of-antioxidant-interfacial-concentrations
#5
Mafalda Meireles, Sonia Losada-Barreiro, Marlene Costa, Fátima Paiva-Martins, Carlos Bravo-Díaz, Luís S Monteiro
BACKGROUND: Controlling the interfacial concentrations of antioxidants (AOs) in O/W emulsions can be regarded as an unique approach for increasing the efficiency of AOs in inhibiting the oxidation of lipids. Classical methods to determine the AO distribution in binary systems cannot be employed and their distribution needs to be assessed in the intact emulsion. RESULTS: We have employed a well-established kinetic method to determine the distribution of a homologous series of AOs derived of chlorogenic acid in olive oil-in-water emulsions and analyse the effects of AO hydrophobicity on their distributions and their efficiencies...
January 29, 2019: Journal of the Science of Food and Agriculture
https://read.qxmd.com/read/30694347/non-obesogenic-doses-of-fatty-acids-modulate-the-functionality-of-the-circadian-clock-in-the-liver
#6
Yael Tal, Nava Chapnik, Oren Froy
Saturated fatty acids, such as palmitate, lead to circadian disruption in cell culture. Moreover, information regarding the effects of unsaturated fatty acids on circadian parameters is scarce. We aimed at studying the effects of low doses of saturated as well as unsaturated fatty acids on circadian metabolism in vivo and at deciphering the mechanism by which fatty acids convey their effect. Mice were fed non-obesogenic doses of palm or olive oil and hepatocytes were treated with palmitate and oleate. Mice fed non-obesogenic doses of palm oil showed increased signaling towards fatty acid synthesis, while olive oil increased signaling towards fatty acid oxidation...
January 29, 2019: Cellular and Molecular Life Sciences: CMLS
https://read.qxmd.com/read/30681829/sorptive-capacities-of-nonpolymeric-plant-lipids-for-hydrophobic-chemicals-determined-by-passive-dosing
#7
Damien Johann Bolinius, Matthew MacLeod, Francesco Iadaresta, Jan Holmbäck, Annika Jahnke
Vegetation plays an important role in the partitioning, transport, and fate of semivolatile hydrophobic organic chemicals (HOCs) in the environment. Leaf/air partition ratios ( Kleaf/air ) of HOCs are highly variable for different plant species. The differences cannot be fully explained by the fraction of lipids in the leaves or the thickness of the cuticle. Our goal was to elucidate the importance of nonpolymeric lipids in determining Kleaf/air . To do this, we extracted organic matter from 7 plant species using solvents that do not extract the polymeric lipids cutin and cutan, to yield extractable organic matter (EOM)...
January 25, 2019: Environmental Science & Technology
https://read.qxmd.com/read/30676168/hepatotoxicity-and-nephrotoxicity-in-rats-induced-by-carbon-tetrachloride-and-the-protective-effects-of-teucrium-polium-and-vitamin-c
#8
Rahmouni Fatma, Riadh Badraoui, Nahed Amri, Aïda Elleuch, Abdelfattah El-Feki, Tarek Rebai, Saoudi Mongi
This work investigated the protective effects of Teucrium polium (T. polium) and Vitamin C (Vit C) against carbon tetrachloride (CCl4 ) induced hepatotoxicity and nephrotoxicity in rats. T.polium reduced the Fer reduced Antioxidant Power (FRAP) (IC50 = 0.89 mg/ml) and 2, 2-diphenyl-1-picrylhydrazyl (DPPH) (IC50 = 0.049 µg/ml) than Vit C, FRAP (IC50 = 0.71 mg/ml) and DPPH (IC50 = 0.029 µg/ml). Male albino Wistar rats were divided into six groups: group I was used as controls, group II received CCl4 in olive oil (0...
January 24, 2019: Toxicology Mechanisms and Methods
https://read.qxmd.com/read/30666577/the-ameliorative-effect-of-quercetin-on-bisphenol-a-induced-toxicity-in-mitochondria-isolated-from-rats
#9
Maryam Shirani, Saeid Alizadeh, Masoud Mahdavinia, Mohammad Amin Dehghani
Recent studies have demonstrated that bisphenol A (BPA) has an adverse or toxic effect on the kidney. This study was designed to evaluate the ability of quercetin (QUER) to prevent BPA-induced mitochondrial dysfunction. Thirty-two healthy adult male Wistar rats were randomly divided into four groups, as follows: control group (olive oil), BPA group (250 mg/kg), BPA þ QUER group (250 mg/kg + 75 mg/kg), and QUER group (75 mg/kg). All treatments were orally administered for 14 days. Kidney mitochondria were isolated by administration of the different centrifugation method...
January 21, 2019: Environmental Science and Pollution Research International
https://read.qxmd.com/read/30657431/water-extract-of-pleurotus-eryngii-var-ferulae-prevents-high-fat-diet-induced-obesity-by-inhibiting-pancreatic-lipase
#10
Kyung-Jin Jo, Jaewang Ghim, Jaeyoon Kim, Hyengji Lee, Taehoon G Lee, Jong-In Kim, Youngmi Kim, Jong Won Byun, Byung Sun Min, Jae Sun Son, Sang Gap Shim, Woo Jae Cheon, Sung Ho Ryu
Pleurotus eryngii var. ferulae (PEF) is traditionally used in the prevention and treatment of lifestyle-related diseases. In this study, we investigated the ability of PEF extract to prevent obesity and metabolic diseases and explored the underlying mechanism. Mice were fed a high-fat diet (HFD) containing PEF extract for 12 weeks, and their body weight, adipose tissue and liver weights, and lipid profiles and blood glucose levels, were monitored. Fecal triglyceride (TG) levels were also measured and olive oil-loading tests were performed...
January 18, 2019: Journal of Medicinal Food
https://read.qxmd.com/read/30652361/measuring-large-lipid-droplet-sizes-by-probing-restricted-lipid-diffusion-effects-with-diffusion-weighted-mrs-at-3t
#11
Dominik Weidlich, Julius Honecker, Oliver Gmach, Mingming Wu, Rainer Burgkart, Stefan Ruschke, Daniela Franz, Bjoern H Menze, Thomas Skurk, Hans Hauner, Ulrich Kulozik, Dimitrios C Karampinos
PURPOSE: The in vivo probing of restricted diffusion effects in large lipid droplets on a clinical MR scanner remains a major challenge due to the need for high b-values and long diffusion times. This work proposes a methodology to probe mean lipid droplet sizes using diffusion-weighted MRS (DW-MRS) at 3T. METHODS: An analytical expression for restricted diffusion was used. Simulations were performed to evaluate the noise performance and the influence of particle size distribution...
January 16, 2019: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://read.qxmd.com/read/30638739/four-oil-intravenous-lipid-emulsion-effect-on-plasma-fatty-acid-composition-inflammatory-markers-and-clinical-outcomes-in-acutely-ill-patients-a-randomised-control-trial-foil-fact
#12
V Donoghue, G K Schleicher, M G L Spruyt, L Malan, D G Nel, P C Calder, R Blaauw
BACKGROUND AND AIMS: Data in critically ill patients on the effect of intravenous lipid emulsions (LEs), containing omega-3 polyunsaturated fatty acids (PUFAs), in parenteral nutrition (PN) are scarce and conflicting. This study compared the effects of a four-oil LE (30% soybean oil, 30% medium-chain triglycerides, 25% olive oil and 15% fish oil (FO)) (SMOFlipid®) to those of a 100% soybean oil-based LE in critically ill adult intensive care unit (ICU) patients. METHODS: In this double-blind, randomised study, patients (n = 75) predicted to need PN for more than 5 days were randomised to receive either a four-oil LE (Study Group (SG)) or a 100% soybean oil LE (Control Group (CG))...
December 13, 2018: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://read.qxmd.com/read/30634450/production-of-added-value-chemical-compounds-through-bioconversions-of-olive-mill-wastewaters-blended-with-crude-glycerol-by-a-yarrowia-lipolytica-strain
#13
Dimitris Sarris, Anna Rapti, Nikolaos Papafotis, Apostolis A Koutinas, Seraphim Papanikolaou
Olive mill wastewaters (OMW) are the major effluent deriving from olive oil production and are considered as one of the most challenging agro-industrial wastes to treat. Crude glycerol is the main by-product of alcoholic beverage and oleochemical production activities including biodiesel production. The tremendous quantities of glycerol produced worldwide represent a serious environmental challenge. The aim of this study was to assess the ability of Yarrowia lipolytica strain ACA-DC 5029 to grow on nitrogen-limited submerged shake-flask cultures, in crude glycerol and OMW blends as well as in media with high initial glycerol concentration and produce biomass, cellular lipids, citric acid and polyols...
January 9, 2019: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://read.qxmd.com/read/30630166/dietary-extra-virgin-olive-oil-polyphenols-do-not-attenuate-colon-inflammation-in-transgenic-hlab-27-rats-but-exert-hypocholesterolemic-effects-through-the-modulation-of-hmgcr-and-ppar-%C3%AE-gene-expression-in-the-liver
#14
Elisabetta Bigagli, Simona Toti, Maura Lodovici, Lisa Giovannelli, Lorenzo Cinci, Mario D'Ambrosio, Cristina Luceri
BACKGROUND: Human studies have demonstrated that olive oil phenolic compounds reduce inflammatory markers associated with chronic diseases. OBJECTIVES: To explore the anti-inflammatory effects of extra-virgin olive oil polyphenols in an experimental model of inflammatory bowel disease (IBD). METHODS: HLA-B27 transgenic rats were fed an AIN-76 diet containing 10% corn oil (CO) or extra-virgin olive oil with high (EVOO) or low phenolic content (ROO) for 3 months...
January 10, 2019: Lifestyle genomics
https://read.qxmd.com/read/30617859/sweep-jet-collection-laser-induced-acoustic-desorption-atmospheric-pressure-photoionization-for-lipid-analysis-applications
#15
Kevin Benham, Facundo M Fernández, Thomas M Orlando
Laser-induced acoustic desorption coupled to microplasma-based atmospheric pressure photoionization (LIAD-APPI) using a nebulized sweep jet to aid in dopant introduction and ion transmission has been applied to the analysis of model, apolar lipid compounds. Specifically, several sterols, sterol esters, and triacylglycerols were detected using dopants such as anisole and toluene. Additionally, several triacylglycerols, sterols, carboxylic acids, and hopanoids were detected from complex mixtures of olive oil and Australian shale rock extract as a first demonstration of the applicability of LIAD-APPI on real-world samples...
January 7, 2019: Journal of the American Society for Mass Spectrometry
https://read.qxmd.com/read/30616045/integrated-process-for-olive-oil-mill-wastewater-treatment-and-its-revalorization-through-the-generation-of-high-added-value-algal-biomass
#16
Ana Malvis, Gassan Hodaifa, Mansour Halioui, Mahdi Seyedsalehi, Sebastián Sánchez
The two-phase continuous centrifugation process for olive oil extraction generates high amounts of olive oil mill wastewater (OMW), characterized by containing large concentrations of numerous contaminant compounds for the environment. An integral process based on physico-chemical (flocculation, photolysis and microfiltration) and microalgal growth stages was proposed for its treatment. Chemical oxygen demand (COD) removal percentages were 57.5%, 88.8% and 20.5% for flocculation, photolysis and microfiltration, respectively...
December 27, 2018: Water Research
https://read.qxmd.com/read/30611732/effect-of-different-olive-oil-derived-antioxidants-hydroxytyrosol-and-3-4-dihydroxyphenylglycol-on-the-quality-of-frozen-thawed-ram-sperm
#17
A Arando, J V Delgado, A Fernández-Prior, J M León, A Bermúdez-Oria, S Nogales, C C Pérez-Marín
The aim of the present study was to evaluate the effect of the addition of different concentrations of two olive oil-derived antioxidants, hydroxytyrosol (3,4-dihydroxyphenylethanol, HT) and 3,4-dihydroxyphenylglycol (DHPG), on ovine semen during the freezing-thawing process. Sperm was collected, pooled and diluted with commercial extenders and then divided into aliquots supplemented with different concentrations (10 μg/ml, 30 μg/ml, 50 μg/ml and 70 μg/ml) of HT, DHPG and a mixture (MIX) of both antioxidants...
January 3, 2019: Cryobiology
https://read.qxmd.com/read/30608676/droplet-stabilized-oil-in-water-emulsions-protect-unsaturated-lipids-from-oxidation
#18
Sewuese S Okubanjo, Simon M Loveday, Aiqian M Ye, Peter J Wilde, Harjinder Singh
Droplet-stabilized emulsions use fine protein-coated lipid droplets - the shell - to emulsify larger droplets of a second lipid - the core. This study investigated the oxidation resistance of polyunsaturated fatty acid oil (PUFA oil) within droplet-stabilised emulsions, using shell lipids with a range of melting points: olive oil (low melting), trimyristin (high-melting) and palmolein oil (intermediate melting point). Oxidation of PUFA oil was accelerated with a fluorescent lamp in the presence of ferrous iron (100 μM) for nine days, and PUFA oxidation was monitored via conjugated dienes, lipid hydroperoxides and hexanal levels...
January 4, 2019: Journal of Agricultural and Food Chemistry
https://read.qxmd.com/read/30606955/induction-periods-for-lipid-crystallization-of-various-vegetable-oils
#19
Yayoi Miyagawa, Mao Yoshida, Yudai Chizawa, Shuji Adachi
The induction period for crystallization, defined as the time required to crystallize, was discussed during isothermal storage at -5 to -45°C for various vegetable oils; olive, safflower, rapeseed, corn, rice bran, soybean, and linseed oils. The induction periods, largely dependent on the oil type and storage temperature, were classified into two groups. The induction periods of corn, rice bran, soybean, and linseed oils were monotonically shortened as the storage temperature decreased. On the other hand, the induction periods for rapeseed, olive, safflower oils and the mixtures of rapeseed and soybean oils, and of olive and safflower oils did not simply change or elongate with a decrease in storage temperature...
2019: Journal of Oleo Science
https://read.qxmd.com/read/30604333/lipid-nanoemulsions-of-rebamipide-formulation-characterization-and-in-vivo-evaluation-of-pharmacokinetic-and-pharmacodynamic-effects
#20
Arjun Narala, Swathi Guda, Kishan Veerabrahma
Rebamipide has low oral bioavailability (10%) due to its low solubility and permeability. Lipid nanoemulsions (LNEs) were prepared in order to improve its oral bioavailability. Rebamipide-loaded lipid nanoemulsions were formulated by hot homogenization and ultrasonication method. Olive oil and egg lecithin in various concentrations as emulsifier were used in the preparation of LNEs. The lipid nanoemulsions were evaluated for various parameters. The globule size, polydispersity index (PDI), and zeta potential (ZP) of the formulations ranged from 230...
January 2, 2019: AAPS PharmSciTech
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