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https://www.readbyqxmd.com/read/29158427/do-emotions-related-to-alcohol-consumption-differ-by-alcohol-type-an-international-cross-sectional-survey-of-emotions-associated-with-alcohol-consumption-and-influence-on-drink-choice-in-different-settings
#1
Kathryn Ashton, Mark A Bellis, Alisha R Davies, Karen Hughes, Adam Winstock
OBJECTIVES: To examine the emotions associated with drinking different types of alcohol, explore whether these emotions differ by sociodemographics and alcohol dependency and whether the emotions associated with different drink types influence people's choice of drinks in different settings. DESIGN: International cross-sectional opportunistic survey (Global Drug Survey) using an online anonymous questionnaire in 11 languages promoted through newspapers, magazines and social media from November 2015 to January 2016...
November 20, 2017: BMJ Open
https://www.readbyqxmd.com/read/29156939/phenolic-compounds-as-natural-and-multifunctional-anti-obesity-agents-a-review
#2
Celia Rodríguez-Pérez, Antonio Segura-Carretero, María Del Mar Contreras
Prevalence of obesity worldwide has reached pandemic proportions. Despite the increasing evidence in the implication of phenolic compounds in obesity management, the real effect is not completely understood. The available in vitro and in vivo studies have demonstrated the implication of phenolic compounds in: lowering food intake, decreasing lipogenesis, increasing lipolysis, stimulating fatty acids β-oxidation, inhibiting adipocyte differentiation and growth, attenuating inflammatory responses and suppress oxidative stress...
November 20, 2017: Critical Reviews in Food Science and Nutrition
https://www.readbyqxmd.com/read/29147746/multianalyte-high-throughput-liquid-chromatography-tandem-mass-spectrometry-method-for-the-sensitive-determination-of-fungicides-and-insecticides-in-wine
#3
Gabriela Castro, Leticia Pérez-Mayán, Tamara Rodríguez-Cabo, Isaac Rodríguez, Maria Ramil, Rafael Cela
Evidence of pesticide transfer from grapes to wine, added to differences in the national regulations regarding the number and the maximum concentration of these species in wine, demands analytical procedures suitable for their routine control in this foodstuff. In this research, solid-phase extraction (SPE) and ultra-performance liquid chromatography (UPLC), with tandem mass spectrometry (MS/MS) detection, are combined to obtain a sensitive and rapid procedure to determine 50 pesticides in red and white wines...
November 16, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/29146365/sulfur-free-red-wines-through-the-use-of-grapevine-shoots-impact-on-the-wine-quality
#4
Rafaela Raposo, Fabio Chinnici, María José Ruiz-Moreno, Belén Puertas, Francisco J Cuevas, María Carbú, Raúl F Guerrero, Víctor Ortíz-Somovilla, José Manuel Moreno-Rojas, Emma Cantos-Villar
Following a preliminary study to determine the possibility of using a grapevine shoot extract (VIN) as a sustainable alternative to sulfur dioxide (SO2), in this study, the chromatic features, phenolic composition, and sensory analysis of wines treated with VIN at two concentrations were studied during storage in bottle for the first time. The highest differences were found in phenolic compounds after 12months of storage in bottle. The VIN wines had a low content of free anthocyanins and were high in vinyl-pyranoanthocyanins, and B-type vitisins...
March 15, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29146359/determination-of-tryptophan-derivatives-in-kynurenine-pathway-in-fermented-foods-using-liquid-chromatography-tandem-mass-spectrometry
#5
Cemile Yılmaz, Vural Gökmen
This study aimed to develop an analytical method for the determination of tryptophan and its derivatives in kynurenine pathway using tandem mass spectrometry in various fermented food products (bread, beer, red wine, white cheese, yoghurt, kefir and cocoa powder). The method entails an aqueous extraction and reversed phase chromatographic separation using pentafluorophenyl (PFP) column. It allowed quantitation of low ppb levels of tryptophan and its derivatives in different fermented food matrices. It was found that beer samples were found to contain kynurenine within the range of 28...
March 15, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29146332/micro-oxygenation-does-not-eliminate-hydrogen-sulfide-and-mercaptans-from-wine-it-simply-shifts-redox-and-complex-related-equilibria-to-reversible-oxidized-species-and-complexed-forms
#6
Eduardo Vela, Purificación Hernandez-Orte, Ernesto Franco-Luesma, Vicente Ferreira
This work seeks to assess the effects of micro-oxygenation (MOX) on the present and potential levels of Volatile Sulfur Compounds (VSCs) of wine. With such purpose, three red wines with a tendency to develop sulfury off-odors were subjected to three different MOX conditions (4.4-20mg/L delivered at 0.05 or 0.2mg/L/day). Samples were further subjected to Accelerated Reductive aging (AR) and analyzed for free and Brine Releasable (BR) VSCs and redox potential. Although MOX induced strong decreases in the levels of all free VSCs, hardly affected the ability of the wine to release back hydrogen sulfide and other mercaptans during AR-aging...
March 15, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29146315/sensory-olfactometry-and-comprehensive-two-dimensional-gas-chromatography-analyses-as-appropriate-tools-to-characterize-the-effects-of-vine-management-on-wine-aroma
#7
Karine P Nicolli, Aline C T Biasoto, Érica A Souza-Silva, Celito C Guerra, Henrique P Dos Santos, Juliane E Welke, Cláudia A Zini
For the first time, the influence of different vine management was evaluated in relation to volatile profile and sensory perception through GC×GC/TOFMS, QDA, GC-FID, GC/MS, and GC-O. GC×GC/TOFMS analyses and QDA have shown that a larger spacing between vine rows (2 rather than 1m), attachment of shoots upwards, and irrigation did not result in wine improvement. Conversely, wines elaborated with grapes from a vine with a lower bud load (20 per plant; sample M1) stood out among the other procedures, rendering the most promising wine aroma...
March 15, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29142647/effects-of-staining-liquids-and-finishing-methods-on-translucency-of-a-hybrid-ceramic-material-having-two-different-translucency-levels
#8
Sebnem Ulviye Buyukkaplan, Mehmet Mustafa Özarslan, Çağatay Barutcigil, Merve Arslan, Kubilay Barutcigil, Elif Ece Yoldan
PURPOSE: Beverages may affect the translucency of esthetic dental restorative materials. The aim of the present study was to investigate the effects of coffee and red wine on the translucency of a PICN material with two translucency levels, and finished with different methods. MATERIALS AND METHODS: 2M2 high translucent and translucent VITA Enamic hybrid ceramic blocks were investigated. Rectangular specimens with the dimensions of 12 mm × 14 mm × 2 mm were prepared...
October 2017: Journal of Advanced Prosthodontics
https://www.readbyqxmd.com/read/29141407/partial-solar-radiation-exclusion-with-color-shade-nets-reduce-the-degradation-of-organic-acids-and-flavonoids-of-grape-berry-vitis-vinifera-l
#9
Johan Martínez-Lüscher, Christopher Cody Lee Chen, Luca Brillante, Sahap Kaan Kurtural
The incidence of solar radiation on red-skinned grapes can promote the synthesis of flavonoid desirable for wine production, elevated temperature may impair their accumulation. We performed a shade cloth trial covering the fruit zone (from pepper-corn size to maturity) with four polyethylene 1-meter curtains with different optical properties (20% shading factor Pearl colored and 40% shading factor Aluminet, Blue and Black colored) and a Control with no cover. Cluster temperature was 3.7°C lower on the Southwest side in Black-40% clusters during the warmest part of the day compared to Control...
November 15, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29141064/port-wine-stains-a-focused-review-on-their-management
#10
Katelyn Mariko Updyke, Amor Khachemoune
<p>Port-wine stain (PWS) is the second most common congenital vascular malformation characterized as ectatic capillaries and venules in the dermis that clinically appears as a deep red to purple patch on the skin. Typically, PWS progressively darken and may become hypertrophic or nodular without treatment. There are several treatment options available for PWS from topical antiangiogenic agents to laser therapies. Vascular-specific lasers are the gold standard in treating PWS and classically pulsed dye lasers are usually the treatment of choice...
November 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/29136582/colorimetric-detection-of-melamine-in-milk-based-on-triton-x-100-modified-gold-nanoparticles-and-its-paper-based-application
#11
Nan Gao, Pengcheng Huang, Fangying Wu
In this study, we have developed a method for rapid, highly efficient and selective detection of melamine. The negatively charged citrate ions form an electrostatic layer on gold nanoparticles (AuNPs) and keep the NPs dispersed and stable. When citrate-capped AuNPs were further modified with Triton X-100, it stabilized the AuNPs against the conditions of high ionic strength and a broad pH range. However, the addition of melamine caused the destabilization and aggregation of NPs. This may be attributed to the interaction between melamine and the AuNPs through the ligand exchange with citrate ions on the surface of AuNPs leading Triton X-100 to be removed...
November 8, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/29129055/the-role-of-elemental-sulfur-in-forming-latent-precursors-of-h2s-in-wine
#12
Jillian A Jastrzembski, Rachel B Allison, Elle Friedberg, Gavin L Sacks
Hydrogen sulfide (H2S) can increase during abiotic storage of wines, and potential latent sources of H2S are still under investigation. We demonstrate that elemental sulfur (S(0)) residues on grapes can not only produce H2S during fermentation, but also form precursors capable of generating additional H2S after three months bottle storage. H2S could be released from S(0)-derived precursors by addition of a reducing agent (TCEP), but not by addition of strong brine, and the size of the TCEP-releasable pool varied among yeast strain...
November 12, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29125293/oxidation-of-wine-polyphenols-by-secretomes-of-wild-botrytis-cinerea-strains-from-white-and-red-grape-varieties-and-determination-of-their-specific-laccase-activity
#13
Sabrina Zimdars, Julia Hitschler, Andreas Schieber, Fabian Weber
Processing of Botrytis cinerea infected grapes leads to enhanced enzymatic browning reactions mainly caused by the enzyme laccase which is able to oxidize a wide range of phenolic compounds. The extent of color deterioration depends on the activity of the enzymes secreted by the fungus. The present study revealed significant differences in the oxidative properties of secretomes of several B. cinerea strains isolated from five grape varieties. The presumably laccase containing secretomes varied in their catalytic activity toward six phenolic compounds present in grapes...
November 10, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29120760/rapid-and-automated-on-line-solid-phase-extraction-hplc-ms-ms-with-peak-focusing-for-the-determination-of-ochratoxin-a-in-wine-samples
#14
Luca Campone, Anna Lisa Piccinelli, Rita Celano, Imma Pagano, Mariateresa Russo, Luca Rastrelli
This study reports a fast and automated analytical procedure based on an on-line SPE-HPLC-MS/MS method for the automatic pre-concentration, clean up and sensitive determination of OTA in wine. The amount of OTA contained in 100μL of sample (pH≅5.5) was retained and concentrated on an Oasis MAX SPE cartridge. After a washing step to remove matrix interferents, the analyte was eluted in back-flush mode and the eluent from the SPE column was diluted through a mixing Tee, using an aqueous solution before the chromatographic separation achieved on a monolithic column...
April 1, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29120125/risk-factors-associated-with-black-tooth-stain
#15
Katica Prskalo, Eva Klarić Sever, Ivan Alerić, Tatjana Antonić Jelić, Ivona Žaja
The aim of the study was to show whether there is any influence of food, drink or drug intake on the formation of tooth discoloration. A total of 500 patients aged 15-25 years were examined to take part in the study. Of these, 60 patients were selected and divided into two groups of 30 patients each. Group 1 included patients with black pigmentation on vestibular/oral tooth surfaces. Group 2 included patients without discoloration (control). Data were recorded in a questionnaire. Atomic absorption spectrometry was used to determine elements in discoloration samples...
March 2017: Acta Clinica Croatica
https://www.readbyqxmd.com/read/29112113/erratum-carrasco-s%C3%A3-nchez-v-et-al-removal-of-4-ethylphenol-and-4-ethylguaiacol-with-polyaniline-based-compounds-in-wine-like-model-solutions-and-red-wine-molecules-2015-20-8-14312-14325
#16
Verónica Carrasco-Sánchez, Amalraj John, Adolfo Marican, Leonardo S Santos, V Felipe Laurie
No abstract text is available yet for this article.
November 7, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29105927/resveratrol-interferes-with-an-early-step-in-the-fibrillation-pathway-of-human-lysozyme-and-modulates-it-towards-less-toxic-off-pathway-aggregates
#17
Fatima Kamal Zaidi, Rajiv Bhat
Effect of the red wine polyphenol, resveratrol, was investigated on the amyloid fibril formation of human lysozyme (HuL), towards elucidating the mechanism of resveratrol action and probing its role as a possible modulator of lysozyme aggregation and toxicity. Using a number of biophysical tools, resveratrol was observed to alter the fibrillation kinetics of HuL and inhibit its fibrillation by binding with weak to moderate affinity to the conformations populated at the early stages of the pathway with concomitant stabilization of these initial conformations...
November 4, 2017: Chembiochem: a European Journal of Chemical Biology
https://www.readbyqxmd.com/read/29084143/red-wine-resveratrol-and-atrial-fibrillation
#18
REVIEW
Laura Siga Stephan, Eduardo Dytz Almeida, Melissa Medeiros Markoski, Juliano Garavaglia, Aline Marcadenti
Atrial fibrillation (AF) is a common cardiac arrhythmia that is associated with increased risk for cardiovascular disease and overall mortality. Excessive alcohol intake is a well-known risk factor for AF, but this correlation is less clear with light and moderate drinking. Besides, low doses of red wine may acutely prolong repolarization and slow cardiac conduction. Resveratrol, a bioactive polyphenol found in grapes and red wine, has been linked to antiarrhythmic properties and may act as an inhibitor of both intracellular calcium release and pathological signaling cascades in AF, eliminating calcium overload and preserving the cardiomyocyte contractile function...
October 30, 2017: Nutrients
https://www.readbyqxmd.com/read/29080348/interactive-effects-between-total-so2-ethanol-and-storage-temperature-against-brettanomyces-bruxellensis
#19
C G Edwards, T A Oswald
Although B. bruxellensis continues to be a problem during red winemaking due to formation of off-odors and flavors, few interactions between intrinsic and extrinsic conditions that would limit spoilage have been identified. Using a commercially-prepared Merlot wine, a 3 × 2 × 2 complete factorial design was implemented with total SO2 (0, 60, or 100 mg l(-1) ), ethanol (13% or 14.5% v v(-1) ), and storage temperature (15 or 18C) as variables. Populations of two strains of B. bruxellensis isolated from Washington wines (I1a and F3) were monitored for 100 days before concentrations of 4-ethylphenol, 4-ethylguaiacol, and volatile acidity were measured...
October 28, 2017: Letters in Applied Microbiology
https://www.readbyqxmd.com/read/29079840/selective-colorimetric-detection-of-nitrite-in-water-using-chitosan-stabilized-gold-nanoparticles-decorated-reduced-graphene-oxide
#20
Baishnisha Amanulla, Selvakumar Palanisamy, Shen-Ming Chen, Te-Wei Chiu, Vijayalakshmi Velusamy, James M Hall, Tse-Wei Chen, Sayee Kannan Ramaraj
Excess nitrite (NO2(-)) concentrations in water supplies is considered detrimental to the environment and human health, and is associated with incidence of stomach cancer. In this work, the authors describe a nitrite detection system based on the synthesis of gold nanoparticles (AuNPs) on reduced graphene oxide (rGO) using an aqueous solution of chitosan and succinic acid. The AuNPs-rGO nanocomposite was confirmed by different physicochemical characterization methods including transmission electron microscopy, elemental analysis, X-ray diffraction, UV-visible (UV-vis) and Fourier transform infrared spectroscopy...
October 27, 2017: Scientific Reports
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