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https://www.readbyqxmd.com/read/30106345/activated-carbon-added-to-recycled-paperboard-to-prevent-migration-into-food-approach-for-determining-efficacy-and-first-results
#1
Maurus Biedermann, Rafael Schum, Koni Grob
Catcherboard MB12® from Smurfit Kappa is a recycled paperboard incorporating activated carbon to reduce the release of contaminants into food. An approach is proposed to determine the efficacy of the activated carbon. Sorption into activated carbon increases the concentration ratio paperboard/food (distribution coefficient) and reduces the migration rate, i.e. prolongs the time for equilibration. Using silicone paper as food simulant, the concentration ratio was increased by a factor of at least 1000 compared to recycled paperboard without activated carbon, which is sufficient to meet the 1% criterion proposed for barriers...
August 14, 2018: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/30106186/looping-star
#2
Florian Wiesinger, Anne Menini, Ana Beatriz Solana
PURPOSE: To introduce a novel MR pulse sequence, termed Looping Star, for fast, robust, and yet quiet, 3D radial multi-gradient echo T2* MR imaging. METHODS: The Looping Star pulse sequence is based on the 3D radial Rotating Ultra-Fast Imaging Sequence (RUFIS) extended by a time-multiplexed gradient-refocusing mechanism. First, multiple magnetic coherences are excited, which are subsequently gradient-refocused in form of a looping k-space trajectory. Accordingly, Looping Star captures an initial FID image followed by gradient echo images at equidistant echo times...
August 14, 2018: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/30101962/effects-of-a-low-and-a-high-dietary-la-ala-ratio-on-long-chain-pufa-concentrations-in-red-blood-cells
#3
Theresa Greupner, Laura Kutzner, Svenja Pagenkopf, Heike Kohrs, Andreas Hahn, Nils Helge Schebb, Jan Philipp Schuchardt
There is a debate about the optimal dietary ratio of the parent n6 fatty acid linoleic acid (LA) and n3 fatty acid alpha-linolenic acid (ALA) to promote an efficient conversion of ALA to EPA and DHA, which have implications for human health. The aim of the present study was to compare the effects of a low-LA/high-ALA (loLA/hiALA) diet with a high-LA/low-ALA (hiLA/loALA) diet on fatty acid concentrations in red blood cells (RBCs). Fifteen omnivore healthy men (mean age 26.1 ± 4.5 years) with a low initial EPA/DHA status (sum (∑) EPA + DHA% of total fatty acids in RBC at baseline: 4...
August 13, 2018: Food & Function
https://www.readbyqxmd.com/read/30097042/phytochemical-analysis-and-evaluation-of-the-cytotoxic-antimicrobial-and-antioxidant-activities-of-essential-oils-from-three-plectranthus-species-grown-in-saudi-arabia
#4
Ramzi A Mothana, Jamal M Khaled, Omar M Noman, Ashok Kumar, Mohamed F Alajmi, Adnan J Al-Rehaily, Mine Kurkcuoglu
BACKGROUND: Cancers and microbial infections are still a major health problem, therefore research on new anticancer and antimicrobial agents ought to be continued. Natural products including essential oils from medicinal plants continue to be an important resource to manage various diseases. Thus, the particular objectives of this study are to investigate the chemical composition, cytotoxic, antimicrobial and antioxidant activities of three Plectranthus species namely P. cylindraceus Hocst...
August 10, 2018: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/30096550/molecular-oxygen-loading-in-candidate-theranostic-droplets-stabilized-with-biocompatible-fluorinated-surfactants-particle-size-effect-and-application-to-in-situ-19-f-mri-mapping-of-oxygen-partial-pressure
#5
Orane Lorton, Jean-Noël Hyacinthe, Stéphane Desgranges, Laura Gui, Antoine Klauser, Zarko Celicanin, Lindsey A Crowe, François Lazeyras, Eric Allémann, Nicolas Taulier, Christiane Contino-Pépin, Rares Salomir
OBJECTIVE: Perfluorocarbon nano- and micron-sized emulsions are a new field of investigation in cancer treatment due to their ability to be used as imaging contrast agents, or as delivery vectors for pharmaceuticals. They also demonstrated capability to enhance the efficiency of high intensity focused ultrasound thermo-therapy. In the context of new biomedical applications we investigated perfluorooctyl bromide (PFOB) theranostic droplets using 19 F NMR. Each droplet contains biocompatible fluorinated surfactants composed of a polar Tris(hydroxymethyl)aminomethane head unit and hydrophobic perfluorinated tail (abbreviated as F-TAC)...
August 2, 2018: Journal of Magnetic Resonance
https://www.readbyqxmd.com/read/30094233/structural-and-biochemical-properties-of-duckweed-surface-cuticle
#6
Nikolai Borisjuk, Anton A Peterson, Jiyang Lv, Guorun Qu, Qian Luo, Lei Shi, Guimin Chen, Olena Kishchenko, Yuzhen Zhou, Jianxin Shi
The plant cuticle, which consists of cutin and waxes, forms a hydrophobic coating covering the aerial surfaces of all plants. It acts as an interface between plants and their surrounding environment whilst also protecting them against biotic and abiotic stresses. In this research, we have investigated the biodiversity and cuticle properties of aquatic plant duckweed, using samples isolated from four different locations around Hongze lake in Jiangsu province, China. The samples were genotyped using two chloroplast markers and nuclear ribosomal DNA markers, which revealed them as ecotypes of the larger duckweed, Spirodela polyrhiza ...
2018: Frontiers in Chemistry
https://www.readbyqxmd.com/read/30092276/migratory-and-resident-waders-differ-in-risk-taking-on-the-wintering-grounds
#7
Peter Mikula, Mario Díaz, Anders Pape Møller, Tomáš Albrecht, Piotr Tryjanowski, Martin Hromada
Animals, including birds, have to optimize their escape strategies under the risk of predation. Level of risk-taking is often estimated as flight initiation distance (FID), which is assumed to reflect the trade-off between costs of escape and benefits of staying put. Despite costs and benefits of escape may change during the season, previous studies have focused mainly on breeding bird populations. Here, we focused on risk taking in migratory and resident populations of waders (Charadriiformes) at the wintering grounds in tropical Africa...
August 6, 2018: Behavioural Processes
https://www.readbyqxmd.com/read/30085679/inter-species-developmental-differences-in-metabonomic-phenotypes-of-lycium-ruthenicum-and-l-barbarum-fruits
#8
Qi Wang, Shaohua Zeng, Xiangyu Wu, Hehua Lei, Ying Wang, Huiru Tang
Fruits of Lycium ruthenicum (LR) and L. barbarum (LB) in Solanaceae family contain abundant bioactive metabolites used widely as functional food and natural medicine. To characterize the fruit developmental molecular phenotypes, we comprehensively analyzed metabolite composition of both Lycium fruits at three developmental stages using the combined NMR, LC-MS/MS and GC-FID/MS methods. The metabonomes of these fruits were dominated by over 90 metabolites including sugars, amino acids, TCA cycle intermediates, fatty acids, choline metabolites and shikimate-mediated plant secondary metabolites...
August 7, 2018: Journal of Proteome Research
https://www.readbyqxmd.com/read/30083869/correction-to-sequence-specific-backbone-resonance-assignments-and-microsecond-timescale-molecular-dynamics-simulation-of-human-eosinophil-derived-neurotoxin
#9
Donald Gagné, Chitra Narayanan, Khushboo Bafna, Laurie-Anne Charest, Pratul K Agarwal, Nicolas Doucet
After publication of this article, the authors noticed that a 15 N-13 C dimension error was unwillingly coded in the 3D NMR spectrum "fid.com" processing script used to perform backbone assignments for this enzyme. The authors noticed that some OBS, CAR and LAB values in the "fid.com" had been switched in the y and z dimensions, probably resulting from a wrong NMRPipe selection when reading the Varian NMR experimental parameters. They have carefully re-processed, re-analyzed, re-assigned, in addition to checking all scripts to evaluate the extent of this processing error on the published assignments...
August 6, 2018: Biomolecular NMR Assignments
https://www.readbyqxmd.com/read/30082125/magnetic-frame-work-composite-as-an-efficient-sorbent-for-magnetic-solid-phase-extraction-of-plasticizer-compounds
#10
Yadollah Yamini, Meysam Safari, Ali Morsali, Vahid Safarifard
Two metal-organic frameworks (MOFs) TMU-23 and TMU-24, containing amide-functionalized pores, have been fabricated. Their applications were evaluated for the magnetic solid phase extraction of plasticizer compounds benzylbutylphthalate (BBP), di-2-(ethylhexyl) phthalate (DEHP) and di-n-butyl phthalate (DBP) prior to analysis by gas chromatography with flame ionization detector (GC-FID). Due to the large surface area and unique porous structure of the MOFs as well as hydrogen bonding formation, π-π and hydrophobic interactions between the analytes and the MOF ligands, the prepared sorbents showed a high affinity towards the target analytes...
July 27, 2018: Journal of Chromatography. A
https://www.readbyqxmd.com/read/30076055/exposure-levels-and-health-risk-assessment-of-ambient-btx-at-urban-and-rural-environments-of-a-terai-region-of-northern-india
#11
Amit Masih, Anurag S Lall, Ajay Taneja, Raj Singhvi
Benzene, toluene and xylene (BTX) belong to an important group of aromatic volatile organic compounds (VOCs) that are usually emitted from various sources. BTX play a vital role in the tropospheric chemistry as well as pose health hazard to human beings. Thus, an investigation of ambient benzene, toluene and xylene (BTX) was conducted at urban and rural sites of Gorakhpur for a span of one year in order to ascertain the contamination levels. The sampling of BTX was performed by using a low-flow SKC Model 220 sampling pump equipped with activated coconut shell charcoal tubes with a flow rate of 250 ml/min for 20-24 h...
July 24, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/30076051/chlorinated-organic-compounds-in-liquid-wastes-dnapl-from-lindane-production-dumped-in-landfills-in-sabi%C3%A3-anigo-spain
#12
A Santos, J Fernández, J Guadaño, D Lorenzo, A Romero
α, β and γ-hexachlorocyclohexane (HCH) are persistent and bioaccumulative pollutants and they were included in the Stockholm Convention on Persistent Organic Pollutants (POPs). Old lindane factories generated high amounts of wastes with HCH and other Chlorinated Organic Compounds (COCS). These were often dumped in the surroundings of the production sites, polluting soil and groundwaters with the associated risk of surface pollution. This is the case of the Sardas and Bailin landfills, located in Sabiñánigo (Huesca, Spain)...
July 28, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/30067765/human-and-the-beast-flight-and-aggressive-responses-of-european-bison-to-human-disturbance
#13
Andżelika Haidt, Tomasz Kamiński, Tomasz Borowik, Rafał Kowalczyk
Large mammals are often a source of conflict, and consequently there has been increasing interest in close encounters with them. Knowledge of wildlife responses to human disturbance is crucial for the management of increasing and expanding populations of large animals. We investigated flight initiation distance (FID) and aggressive responses of the European bison-the largest terrestrial mammal of Europe-to human disturbance in the Białowieża Forest (NE Poland). When encountered by humans, bison usually flee...
2018: PloS One
https://www.readbyqxmd.com/read/30065400/chemical-characterization-in-vitro-biological-activity-of-essential-oils-and-extracts-of-three-eryngium-l-species-and-molecular-docking-of-selected-major-compounds
#14
Jelena S Matejić, Zorica Z Stojanović-Radić, Mihailo S Ristić, Jovana B Veselinović, Bojan K Zlatković, Petar D Marin, Ana M Džamić
Many Eryngium species have been traditionally used as ornamental, edible or medicinal plants. The gas chromatography-flame ionization detector (GC-FID) and gas chromatography-mass spectrometry (GC-MS) analyses have shown that the major compounds in the aerial parts were spathulenol (in E. campestre and E. palmatum oils) and germacrene D (in E. amethystinum oil). The main compounds in the root oil were nonanoic acid, 2,3,4-trimethylbenzaldehyde and octanoic acid for E. campestre , E. amethystinum and E. palmatum , respectively...
August 2018: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/30065085/fungal-light-oxygen-voltage-domains-for-optogenetic-control-of-gene-expression-and-flocculation-in-yeast
#15
Francisco Salinas, Vicente Rojas, Verónica Delgado, Javiera López, Eduardo Agosin, Luis F Larrondo
Optogenetic switches permit accurate control of gene expression upon light stimulation. These synthetic switches have become a powerful tool for gene regulation, allowing modulation of customized phenotypes, overcoming the obstacles of chemical inducers, and replacing their use by an inexpensive resource: light. In this work, we implemented FUN-LOV, an optogenetic switch based on the photon-regulated interaction of WC-1 and VVD, two LOV (light-oxygen-voltage) blue-light photoreceptors from the fungus Neurospora crassa When tested in yeast, FUN-LOV yields light-controlled gene expression with exquisite temporal resolution and a broad dynamic range of over 1,300-fold, as measured by a luciferase reporter...
July 31, 2018: MBio
https://www.readbyqxmd.com/read/30058216/head-motion-measurement-and-correction-using-fid-navigators
#16
Tess E Wallace, Onur Afacan, Maryna Waszak, Tobias Kober, Simon K Warfield
PURPOSE: To develop a novel framework for rapid, intrinsic head motion measurement in MRI using FID navigators (FIDnavs) from a multichannel head coil array. METHODS: FIDnavs encode substantial rigid-body motion information; however, current implementations require patient-specific training with external tracking data to extract quantitative positional changes. In this work, a forward model of FIDnav signals was calibrated using simulated movement of a reference image within a model of the spatial coil sensitivities...
July 29, 2018: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/30057168/intimal-disruption-in-type-b-aortic-intramural-hematoma-does-size-matter-a-systematic-review-and-meta-analysis
#17
Sergio Moral, Esther Ballesteros, Marta Roque, Cristina Carrato, Pau Vilardell, Ramon Brugada, Arturo Evangelista
BACKGROUND: Type B intramural hematoma (IMH) is considered a low-risk entity for aortic complications if aortic dilation, containing rupture or clinical instability are absent. However, the development of intimal disruptions (ID), present in >40% of cases, poses an unknown risk. OBJECTIVES: To establish which ID characteristics imply a higher risk of aortic complications and, therefore, merit invasive treatment. METHODS: A systematic review and a meta-analysis were made following a search in EMBASE, MEDLINE and PsycINFO for articles published between January 1995 and December 2017...
July 26, 2018: International Journal of Cardiology
https://www.readbyqxmd.com/read/30055278/promoting-the-treatment-of-crude-oil-alkane-pollution-through-the-study-of-enzyme-activity
#18
Long Meng, Wen Li, Mutai Bao, Peiyan Sun
Microbes appear to play a key role in bioremediation of petroleum hydrocarbons pollution and little attention has been paid to the enzyme activity in the process of alkane bioremediation. Oil field bacterium identified as Pseudomonas synxantha LSH-7' was chosen as the tested strain. Periodically collected samples were analyzed by GC-FID (Gas Chromatography- Flame Ionization Detector) and RT-qPCR (Quantitative-Real-Time-PCR). GC-FID results showed this bacterial strain has great degradation ability on crude oil n-alkanes and RT-qPCR data indicated the differences between the three genes expression including AlkB-, Cytochromes P450-, and almA- related when grown on different-chain alkanes...
July 26, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/30053847/antibacterial-activity-evaluation-of-selected-essential-oils-in-liquid-and-vapor-phase-on-respiratory-tract-pathogens
#19
Kamilla Ács, Viktória L Balázs, Béla Kocsis, Tímea Bencsik, Andrea Böszörményi, Györgyi Horváth
BACKGROUND: The increasing number of multidrug-resistant bacteria and the fact of antibiotic resistance is leading to a continuous need for discovering alternative treatments against infections, e.g. in the case of respiratory tract diseases. Essential oils (EOs), because of their volatility, can easily reach both the upper and lower parts of the respiratory tract via inhalation. Therefore, the aim of the present study was the antibacterial evaluation of clove, cinnamon bark, eucalyptus, thyme, scots pine, peppermint, and citronella EOs against respiratory tract pathogens such as Streptococcus pneumoniae, S...
July 27, 2018: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/30050651/physicochemical-characterization-microbiological-quality-and-safety-and-pharmacological-potential-of-hancornia-speciosa-gomes
#20
Uilson Pereira Dos Santos, Georgina S Tolentino, Jorge Sá Morais, Kely de Picoli Souza, Leticia M Estevinho, Edson Lucas Dos Santos
Hancornia speciosa Gomes is a fruit tree, commonly known as the mangaba tree, which is widespread throughout Brazil. The leaves of this plant are used in traditional medicine for medicinal purposes. Thus, the objective of this study was to perform a physicochemical characterization, identify the lipophilic antioxidants and fatty acids, and determine the microbiological quality and safety of H. speciosa leaves. In addition, the antioxidant, antimutagenic, and inhibitory activities of the ethanolic extract of H...
2018: Oxidative Medicine and Cellular Longevity
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