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https://www.readbyqxmd.com/read/29778078/an-effective-and-low-cost-carbon-based-clean-up-method-for-pcdd-fs-and-pcbs-analysis-in-food
#1
Kleopatra Kedikoglou, Danae Costopoulou, Irene Vassiliadou, Evangelos Bakeas, Leondios Leondiadis
Sample preparation is of critical importance in dioxin analysis of food and feed samples. It is a complex procedure that includes lipid extraction followed by the application of chromatographic separation techniques, aiming in removing undesirable interferences from the matrix. The separation of polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) from polychlorinated biphenyls (PCBs) is achieved by carbon-based materials which should have high fat capacity in order to be suitable for lipid-containing matrices...
May 7, 2018: Chemosphere
https://www.readbyqxmd.com/read/29775939/biodegradation-in-seawater-of-pah-and-alkylphenols-from-produced-water-of-a-north-sea-platform
#2
Synnøve Lofthus, Inger K Almås, Peter Evans, Oliver Pelz, Odd Gunnar Brakstad
Operational planned discharges of produced water (PW) to the marine environment from offshore oil production installations, contain low concentrations of dispersed oil compounds, like polycyclic aromatic hydrocarbons (PAHs) and alkylated phenols (APs). Biotransformation in natural seawater (SW) of naphthalenes/PAHs and phenol/APs in field-collected PW from a North Sea platform was investigated in this biodegradation study. The PW was diluted in SW from a Norwegian fjord, and the biodegradation study was performed in slowly rotating carousels at 13 °C over a period of 62 days...
May 4, 2018: Chemosphere
https://www.readbyqxmd.com/read/29775706/purification-and-characterization-of-an-organic-solvent-tolerant-and-detergent-stable-lipase-from-haloferax-mediterranei-cncmm-50101
#3
Siham Akmoussi-Toumi, Souad Khemili-Talbi, Imen Ferioune, Salima Kebbouche-Gana
The present study investigates the purification and biochemical characterization of an extracellular lipase (HML) from Haloarchaea Haloferax mediterranei strain ATS1, isolated from the Sebkha (Medea, Algeria). The pure protein was obtained with ammonium sulfate precipitation (40-70%)-dialysis and UNO Q-6 FPLC, and characterized biochemically. Matrix assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF/MS) analysis revealed that the purified enzyme was a monomer, with a molecular mass of 45,011...
May 15, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29775199/haererehalobacter-sp-js1-a-bioemulsifier-producing-halophilic-bacterium-isolated-from-indian-solar-salt-works
#4
Mariathason Birdilla Selva Donio, Subbiahanadar Chelladurai Karthikeyan, Mariavincent Michaelbabu, Ganapathi Uma, Ramaiyan Raja Jeya Sekar, Thavasimuthu Citarasu
Bioemulsifier (BE)-producing Haererehalobacter sp. JS1 was isolated and identified from the solar salt works in India. The BE was extracted, purified, and characterized by Gas Chromatography-Mass Spectrometry (GC-MS) analysis. Emulsification activity was performed against different oils and dye degradation potential against different dyes. The production of BE was optimized using different carbon sources (C), nitrogen sources (N), pH, and NaCl. BE screening methods revealed that, Haererehalobacter sp. JS1 was highly positive BE production...
May 18, 2018: Journal of Basic Microbiology
https://www.readbyqxmd.com/read/29773378/nanostructured-starch-combined-with-hydroxytyrosol-in-poly-vinyl-alcohol-based-ternary-films-as-active-packaging-system
#5
Francesca Luzi, Elena Fortunati, Alessandro Di Michele, Elisa Pannucci, Ermelinda Botticella, Luca Santi, José Maria Kenny, Luigi Torre, Roberta Bernini
Novel ternary films have been realized by using poly(vinyl alcohol) (PVA) as polymeric matrix, nanostructured starch as reinforcement phase and hydroxytyrosol (HTyr), a low-molecular phenolic compound present in olive oil, as antioxidant agent. Nanostructured starch, in the form of starch nanocrystals (NC) and nanoparticles (NP) obtained by acid hydrolysis and ultrasound irradiation of starch derived from the bread wheat variety Cadenza (WT, amylose content 33%) and a derived-high amylose line (HA, amylose content 75%), was considered...
August 1, 2018: Carbohydrate Polymers
https://www.readbyqxmd.com/read/29772657/effects-of-virgin-olive-oils-differing-in-their-bioactive-compound-contents-on-metabolic-syndrome-and-endothelial-functional-risk-biomarkers-in-healthy-adults-a-randomized-double-blind-controlled-trial
#6
Estefania Sanchez-Rodriguez, Elena Lima-Cabello, Sara Biel-Glesson, Jose R Fernandez-Navarro, Miguel A Calleja, Maria Roca, Juan A Espejo-Calvo, Blas Gil-Extremera, Maria Soria-Florido, Rafael de la Torre, Montserrat Fito, Maria-Isabel Covas, Juan de Dios Alche, Emilio Martinez de Victoria, Angel Gil, Maria D Mesa
The aim of this study was to evaluate the effect of virgin olive oils (VOOs) enriched with phenolic compounds and triterpenes on metabolic syndrome and endothelial function biomarkers in healthy adults. The trial was a three-week randomized, crossover, controlled, double-blind, intervention study involving 58 subjects supplemented with a daily dose (30 mL) of three oils: (1) a VOO (124 ppm of phenolic compounds and 86 ppm of triterpenes); (2) an optimized VOO (OVOO) (490 ppm of phenolic compounds and 86 ppm of triterpenes); and (3) a functional olive oil (FOO) high in phenolic compounds (487 ppm) and enriched with triterpenes (389 ppm)...
May 16, 2018: Nutrients
https://www.readbyqxmd.com/read/29769748/comparative-ecologic-relationships-of-saturated-fat-sucrose-food-groups-and-a-mediterranean-food-pattern-score-to-50-year-coronary-heart-disease-mortality-rates-among-16-cohorts-of-the-seven-countries-study
#7
Daan Kromhout, Alessandro Menotti, Adalberta Alberti-Fidanza, Paolo Emilio Puddu, Peter Hollman, Anthony Kafatos, Hanna Tolonen, Hisashi Adachi, David R Jacobs
BACKGROUND/OBJECTIVES: We studied the ecologic relationships of food groups, macronutrients, eating patterns, and an a priori food pattern score (Mediterranean Adequacy Index: MAI) with long-term CHD mortality rates in the Seven Countries Study. SUBJECTS/METHODS: Sixteen cohorts (12,763 men aged 40-59 years) were enrolled in the 1960s in seven countries (US, Finland, The Netherlands, Italy, Greece, former Yugoslavia: Croatia/Serbia, Japan). Dietary surveys were carried out at baseline and only in a subsample of each cohort...
May 17, 2018: European Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/29766292/gut-derived-lipopolysaccharides-increase-post-prandial-oxidative-stress-via-nox2-activation-in-patients-with-impaired-fasting-glucose-tolerance-effect-of-extra-virgin-olive-oil
#8
Roberto Carnevale, Daniele Pastori, Cristina Nocella, Vittoria Cammisotto, Simona Bartimoccia, Marta Novo, Maria Del Ben, Alessio Farcomeni, Francesco Angelico, Francesco Violi
PURPOSE: Post-prandial phase is characterized by enhanced oxidative stress but the underlying mechanism is unclear. We investigated if gut-derived lipopolysaccharide (LPS) is implicated in this phenomenon and the effect of extra virgin olive oil (EVOO) in patients with impaired fasting glucose (IFG). METHODS: This is a randomized cross-over interventional study including 30 IFG patients, to receive a lunch with or without 10 g of EVOO. Serum LPS, Apo-B48, markers of oxidative stress such as oxidized LDL (oxLDL) and soluble Nox2-derived peptide (sNox2-dp), a marker of nicotinamide-adenine-dinucleotide-phosphate oxidase isoform Nox2 activation, and plasma polyphenols were determined before, 60 and 120 min after lunch...
May 16, 2018: European Journal of Nutrition
https://www.readbyqxmd.com/read/29765583/effect-of-diet-on-blood-viscosity-in-healthy-humans-a-systematic-review
#9
REVIEW
Hamideh Naghedi-Baghdar, Seyed-Mohammad Nazari, Ali Taghipour, Mohsen Nematy, Sadegh Shokri, Mohammad-Reza Mehri, Tahereh Molkara, Roghayeh Javan
Background: Increased whole blood viscosity is associated with increased risk of morbidity and mortality of several life-threatening diseases, including cardiovascular and cerebrovascular disease. The effect of diet on human health has been indicated in many studies, and a health dietary pattern can reduce the incidence of several chronic diseases. Objective: The aim of this systematic review was to assess the effect of diet on blood viscosity and related parameters such as haematocrit (HCT)...
March 2018: Electronic Physician
https://www.readbyqxmd.com/read/29765503/oleuropein-aglycone-protects-against-mao-a-induced-autophagy-impairment-and-cardiomyocyte-death-through-activation-of-tfeb
#10
Caterina Miceli, Yohan Santin, Nicola Manzella, Raffaele Coppini, Andrea Berti, Massimo Stefani, Angelo Parini, Jeanne Mialet-Perez, Chiara Nediani
Age-associated diseases such as neurodegenerative and cardiovascular disorders are characterized by increased oxidative stress associated with autophagy dysfunction. Oleuropein aglycone (OA), the main polyphenol found in olive oil, was recently characterized as an autophagy inducer and a promising agent against neurodegeneration. It is presently unknown whether OA can have beneficial effects in a model of cardiac stress characterized by autophagy dysfunction. Here, we explored the effects of OA in cardiomyocytes with overexpression of monoamine oxidase-A (MAO-A)...
2018: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/29764545/-effects-of-n-butylphthalide-on-the-expressions-of-zo-1-and-claudin-5-in-blood-brain-barrier-of-rats-with-acute-carbon-monoxide-poisoning
#11
Li Wang, Xiaoyu Ding, Mingjun Bi, Jinglin Wang, Yong Zou, Jiyou Tang, Qin Li
OBJECTIVE: To explore the effects of N-butylphthalide on the expressions of ZO-1 and claudin-5 in blood-brain barrier (BBB) in rats with acute carbon monoxide (CO) poisoning. METHODS: A total of 144 adult healthy male Sprague-Dawley (SD) rats were randomly divided into normal control group, CO poisoning group, and NBP treatment group, with 48 rats in each group. The acute CO poisoning model was reproduced in hyperbaric oxygen chamber, and all model rats were given hyperbaric oxygen therapy once daily...
May 2018: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/29764253/anti-inflammatory-local-effect-of-hydroxytyrosol-combined-with-pectin-alginate-and-olive-oil-on-trinitrobenzene-sulfonic-acid-induced-colitis-in-wistar-rats
#12
A Voltes, A Bermúdez, G Rodríguez-Gutiérrez, M L Reyes, C Olano, J Fernández-Bolaños, F de la Portilla
PURPOSE: Evaluate the efficacy of hydroxytyrosol in the local treatment of inflammatory colitis. Currently, the existing treatments for inflammatory bowel diseases does not cure the disease and it is associated with high rates of side effects and complications. Hydroxytyrosol is a phenyl-ethyl-alcohol derived from the hydrolysis of oleuropein and present in olive oil, previous studies have demonstrated the anti-inflammatory effect of dietary hydroxytyrosol supplement, with no toxicity...
May 15, 2018: Journal of Investigative Surgery: the Official Journal of the Academy of Surgical Research
https://www.readbyqxmd.com/read/29763526/extra-virgin-olive-oil-with-natural-phenolic-content-exerts-an-anti-inflammatory-effect-in-adipose-tissue-and-attenuates-the-severity-of-atherosclerotic-lesions-in-ldlr-leiden-mice
#13
Amparo Luque-Sierra, Leticia Alvarez-Amor, Robert Kleemann, Franz Martín, Lourdes M Varela
SCOPE: We evaluated the effect of olive oils with different phenolic content in high-fat diets (HFDs) on hypertrophy and inflammation in adipose tissue and associated atherosclerosis, in the context of obesity. METHODS AND RESULTS: We used Ldlr-/-.Leiden mice fed three different HFDs for 32 weeks and compared them with mice fed the standard low-fat diet (LFD). The different fats provided in the HFDs were: lard (HFD-L), extra-virgin olive oil (79 mg kg-1 of phenolic compounds, HFD-EVOO), or extra-virgin olive oil rich in phenolic compounds (444mg kg-1 of phenolic compounds, HFD-OL)...
May 15, 2018: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/29761656/a-two-step-process-for-the-synthesis-of-hydroxytyrosol
#14
Ziosi Paolo, Paolucci Claudio, Santarelli Francesco, Tabanelli Tommaso, Passeri Sauro, Fabrizio Cavani, Righi Paolo
Here we report about a new process for the synthesis of hydroxytyrosol (3,4-dihydroxyphenylethanol), the most powerful natural antioxidant currently known, by means of a two-step approach. Catechol is first reacted with 2,2 dimethoxyacetaldehyde in basic aqueous medium, to produce the corresponding mandelic derivative with > 90% conversion of the limiting reactant and about 70% selectivity to the desired para-hydroxyalkylated compound. Thereafter, the intermediate is hydrogenated to hydroxytyrosol using a Pd/C catalyst, with total conversion of the mandelic derivative and 68% selectivity...
May 14, 2018: ChemSusChem
https://www.readbyqxmd.com/read/29761487/the-phytoestrogen-genistein-prevents-trabecular-bone-loss-and-affects-thyroid-follicular-cells-in-a-male-rat-model-of-osteoporosis
#15
Branko Filipović, Branka Šošić-Jurjević, Vladimir Ajdžanović, Jasmina Živanović, Milica Manojlović-Stojanoski, Nataša Nestorović, Nataša Ristić, Svetlana Trifunović, Verica Milošević
As a major phytoestrogen of soy, genistein effectively prevents bone loss in both humans and rat models of osteoporosis. However, although the bone-sparing effects of genistein are achieved directly through estrogen receptors, its mode of action on bone by modulation of other endocrine functions is not entirely clear. Thus, thyroid hormones and calcitonin (CT) have an essential influence on bone metabolism. Besides its action on bones, in this study we examined the effect of genistein on the activity of two different endocrine cell populations, thyroid follicular and C-cells...
May 14, 2018: Journal of Anatomy
https://www.readbyqxmd.com/read/29759553/the-role-of-heme-iron-molecules-derived-from-red-and-processed-meat-in-the-pathogenesis-of-colorectal-carcinoma
#16
REVIEW
S M K Gamage, Lakal Dissabandara, Alfred King-Yin Lam, Vinod Gopalan
Emerging evidence that heme iron in red meat is a risk factor for colorectal carcinogenesis is a topic that has received recent scrutiny. This review aims to summarise the mechanism of colorectal carcinogenesis by heme contained in red and processed meat. Heme iron can induce cytotoxicity by 'cytotoxic heme factor' and promote surface epithelial cell apoptosis and compensatory epithelial hyperplasia. Heme, induces peroxidation of lipids, leading to free radical formation and generation of DNA adducts in colorectal epithelial cells...
June 2018: Critical Reviews in Oncology/hematology
https://www.readbyqxmd.com/read/29758544/conduct-and-reporting-of-acceptability-attitudes-beliefs-and-experiences-of-pregnant-women-in-randomised-trials-on-diet-and-lifestyle-interventions-a-systematic-review
#17
E Adela A Hamilton, Ann K Nowell, Angela Harden, Shakila Thangaratinam
OBJECTIVE: To evaluate the conduct and reporting of views of pregnant women on the acceptability, attitudes, beliefs and their experiences in randomised trials on diet and lifestyle interventions. STUDY DESIGN: We undertook a systematic review of literature of randomised trials identified from our previous search in major electronic databases (until February 2017) without language restrictions. We included trials on diet and lifestyle interventions that reported acceptability, attitudes, beliefs and experiences of pregnant women...
May 9, 2018: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/29756530/the-occurrence-of-spontaneous-cortical-spreading-depression-is-increased-by-blood-constituents-and-impairs-neurological-recovery-after-subdural-hematoma-in-rats
#18
Harald Krenzlin, Daniel Jussen, Michaela Maria Plath, Stephan Tretzel, Tobias Kraemer, Oliver Kempski, Beat Alessandri
Acute subdural haemorrhage (ASDH) is common and associated with severe morbidity and mortality. To date, the role of spontaneous cortical spreading depression (sCSD) in exaggerating secondary injury after ASDH, is poorly understood. The present study contains two experimental groups: First, we investigated and characterized the occurrence of sCSD after subdural blood infusion (300 µl) via tissue impedance (IMP) measurement in a rat model. Second, we compared the occurrence and influence of sCSD on lesion growth and neurological deficit in the presence and absence of whole blood constituents...
May 14, 2018: Journal of Neurotrauma
https://www.readbyqxmd.com/read/29753981/expression-of-hydroxytyrosol-and-oleuropein-biosynthetic-genes-are-correlated-with-metabolite-accumulation-during-fruit-development-in-olive-olea-europaea-cv-koroneiki
#19
Niki Mougiou, Fotini Trikka, Emmanouil Trantas, Filippos Ververidis, Antonios Makris, Anagnostis Argiriou, Konstantinos E Vlachonasios
Olive tree is one of the most valuable crops cultivated for its oil that is rich in antioxidants. The beneficial effects of oleuropein and hydroxytyrosol (HT), the most abundant and the most powerful antioxidant respectively, as well as tyrosol, HT's precursor molecule, are well studied however their biosynthetic pathways are not yet clarified. The transcriptome analysis of the young olive fruit, cultivar "Koroneiki", revealed transcripts of all the enzymes used to reconstitute the biosynthetic pathway of tyrosol and HT in other organisms...
May 5, 2018: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/29753866/characterization-of-phenolic-extracts-from-brava-extra-virgin-olive-oils-and-their-cytotoxic-effects-on-mcf-7-breast-cancer-cells
#20
Patricia Reboredo-Rodríguez, Carmen González-Barreiro, Beatriz Cancho-Grande, Tamara Y Forbes-Hernández, Massimiliano Gasparrini, Sadia Afrin, Danila Cianciosi, Alegría Carrasco-Pancorbo, Jesús Simal-Gándara, Francesca Giampieri, Maurizio Battino
The aim of the present work was to evaluate the phenolic profile of the 'Brava' extra virgin olive oil and assess its potential as a "natural adjuvant" in combination with chemotherapy treatment. The total phenol content of the phenolic extracts was 764 mg gallic acid equivalents/kg and the total antioxidant capacity was 2309, 1881 and 2088 μM trolox equivalents/kg determined by Diphenyl-1-picrylhydrazyl free radical method, Ferric Reducing Antioxidant Power and Trolox Equivalent Antioxidant Capacity assay, respectively...
May 10, 2018: Food and Chemical Toxicology
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