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https://www.readbyqxmd.com/read/28212294/volatile-profiles-of-emissions-from-different-activities-analyzed-using-canister-samplers-and-gas-chromatography-mass-spectrometry-gc-ms-analysis-a-case-study
#1
Santino Orecchio, Michele Fiore, Salvatore Barreca, Gabriele Vara
The objective of present study was to identify volatile organic compounds (VOCs) emitted from several sources (fuels, traffic, landfills, coffee roasting, a street-food laboratory, building work, indoor use of incense and candles, a dental laboratory, etc.) located in Palermo (Italy) by using canister autosamplers and gas chromatography-mass spectrometry (GC-MS) technique. In this study, 181 VOCs were monitored. In the atmosphere of Palermo city, propane, butane, isopentane, methyl pentane, hexane, benzene, toluene, meta- and para-xylene, 1,2,4 trimethyl benzene, 1,3,5 trimethyl benzene, ethylbenzene, 4 ethyl toluene and heptane were identified and quantified in all sampling sites...
February 15, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28211083/the-association-between-periodontitis-and-sleep-duration
#2
Mario Romandini, Gioele Gioco, Giorgio Perfetti, Giorgio Deli, Edoardo Staderini, Andreina Laforì
AIM: Due to its potential to influence systemic inflammation and oxidative stress, and to predispose to bacterial infections, sleep duration could potentially be a risk factor for periodontitis. The aim of this cross-sectional study was to evaluate if there was in 2012 an association between periodontitis and sleep duration in a representative sample of the South Korean population. MATERIALS AND METHODS: A total of 5,812 subjects representative of 39.4 million of adults were examined...
February 17, 2017: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/28210441/resin-infiltrant-for-non-cavitated-caries-lesions-evaluation-of-color-stability
#3
Matteo Ceci, Davide Rattalino, Matteo Viola, Riccardo Beltrami, Marco Chiesa, Marco Colombo, Claudio Poggio
BACKGROUND: The objective of this in vitro study was to evaluate the over time color stability of one resin infiltrant (Icon) upon exposure to staining solutions (coffee and wine) compared with one nano-hybrid sealant (Grandio Seal), one transparent fissure sealant with fluoride (Control Seal) and one nanofilled composite (Filtek Supreme XTE). MATERIAL AND METHODS: All materials were polymerized according to manufacturers' instructions into silicon rings (height 1 mm; internal diameter 6 mm; external diameter 8 mm) to obtain specimens identical in size...
February 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28207305/heavy-metal-presence-in-two-different-types-of-ice-cream-artisanal-ice-cream-italian-gelato-and-industrial-ice-cream
#4
D Conficoni, L Alberghini, E Bissacco, M Ferioli, V Giaccone
Ice cream, a popular product worldwide, is usually a milk-based product with other types of ingredients (fruit, eggs, cocoa, dried fruit, additives, and others). Different materials are used to obtain the desired taste, texture, consistency, and appearance of the final product. This study surveyed ice cream products available in Italy for heavy metals (lead, cadmium, chromium, tin, and arsenic). The differences between artisanal and industrial ice cream were also investigated because of the importance in the Italian diet and the diffusion of this ready-to-eat food...
February 16, 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28204924/genome-wide-analysis-of-transposable-elements-in-the-coffee-berry-borer-hypothenemus-hampei-coleoptera-curculionidae-description-of-novel-families
#5
Eric M Hernandez-Hernandez, Rita Daniela Fernández-Medina, Lucio Navarro-Escalante, Jonathan Nuñez, Pablo Benavides-Machado, Claudia M A Carareto
The coffee berry borer (CBB) Hypothenemus hampei is the most limiting pest of coffee production worldwide. The CBB genome has been recently sequenced; however, information regarding the presence and characteristics of transposable elements (TEs) was not provided. Using systematic searching strategies based on both de novo and homology-based approaches, we present a library of TEs from the draft genome of CBB sequenced by the Colombian Coffee Growers Federation. The library consists of 880 sequences classified as 66% Class I (LTRs: 46%, non-LTRs: 20%) and 34% Class II (DNA transposons: 8%, Helitrons: 16% and MITEs: 10%) elements, including families of the three main LTR (Gypsy, Bel-Pao and Copia) and non-LTR (CR1, Daphne, I/Nimb, Jockey, Kiri, R1, R2 and R4) clades and DNA superfamilies (Tc1-mariner, hAT, Merlin, P, PIF-Harbinger, PiggyBac and Helitron)...
February 15, 2017: Molecular Genetics and Genomics: MGG
https://www.readbyqxmd.com/read/28202634/dietary-patterns-are-associated-with-metabolic-outcomes-among-adult-samoans-in-a-cross-sectional-study
#6
Dongqing Wang, Nicola L Hawley, Avery A Thompson, Viali Lameko, Muagatutia Sefuiva Reupena, Stephen T McGarvey, Ana Baylin
Background: The Samoan population has been undergoing a nutrition transition toward more imported and processed foods and a more sedentary lifestyle.Objectives: We aimed to identify dietary patterns in Samoa and to evaluate their associations with metabolic outcomes.Methods: The sample of this cross-sectional study includes 2774 Samoan adults recruited in 2010 (1104 with metabolic syndrome compared with 1670 without). Principal component analysis on food items from a 104-item food-frequency questionnaire was used to identify dietary patterns...
February 15, 2017: Journal of Nutrition
https://www.readbyqxmd.com/read/28198392/coffee-consumption-is-associated-with-dna-methylation-levels-of-human-blood
#7
Yu-Hsuan Chuang, Austin Quach, Devin Absher, Themistocles Assimes, Steve Horvath, Beate Ritz
Beneficial health effects have been attributed to coffee consumption, but it is not yet known whether epigenetics may have a role in this process. Here we associate epigenome-wide DNA methylation levels to habitual coffee consumption from two studies with blood (2100 and 215 participants), and one with saliva samples (256 participants). Adjusting for age, gender, and blood cell composition, one CpG (cg21566642 near ALPPL2) surpassed genome-wide significance (P=3.7 × 10(-10)) and from among 10 additional CpGs significant at P≤5...
February 15, 2017: European Journal of Human Genetics: EJHG
https://www.readbyqxmd.com/read/28196026/caffeine-inhibits-fluid-secretion-by-interlobular-ducts-from-guinea-pig-pancreas
#8
Yuka Mochimaru, Akiko Yamamoto, Miyuki Nakakuki, Makoto Yamaguchi, Ituka Taniguchi, Hiroshi Ishiguro
OBJECTIVES: Caffeine is contained in coffee, tea, and a lot of beverages and foods. We examined the direct effects of caffeine on the physiological function of pancreatic duct cells by using interlobular duct segments isolated from guinea pig pancreas. METHODS: The rate of fluid secretion was continuously measured by monitoring the luminal volume of isolated duct segments. Changes in intracellular Ca concentration ([Ca]i) were estimated by microfluorometry in ducts loaded with fura-2...
February 14, 2017: Pancreas
https://www.readbyqxmd.com/read/28195330/positive-and-negative-aspects-of-green-coffee-consumption-antioxidant-activity-vs-mycotoxins
#9
Magdalena Jeszka-Skowron, Agnieszka Zgoła-Grześkowiak, Agnieszka Waśkiewicz, Łukasz Stępień, Ewa Stanisz
BACKGROUND: The quality of coffee depends not only on the contents of healthy compounds but also on its contamination with microorganisms which can produce mycotoxins during development, harvesting, preparation, transport and storage. RESULTS: Antioxidant activity of green coffee brews measured in this study by ABTS, DPPH and Folin-Ciocalteu assays showed that coffee extracts from Robusta beans possessed highest activity in all assays than extracts from Arabica coffee...
February 13, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28194561/xanthine-alkaloids-occurrence-biosynthesis-and-function-in-plants
#10
Hiroshi Ashihara, Kouichi Mizuno, Takao Yokota, Alan Crozier
Caffeine is a xanthine alkaloid found in non-alcoholic beverages such as tea, coffee, and cocoa. It was discovered in tea and coffee in the 1820s, but it was not until 2000 that details of molecular events associated with caffeine biosynthesis began to be unraveled. Reviewed are the occurrence of xanthine alkaloids in the plant kingdom and the elucidation of the caffeine biosynthesis pathway, providing details of the N-methyltransferases, belonging to the motif B' methyltransferase family, which catalyze three steps in the four-step pathway leading from xanthosine to caffeine...
2017: Progress in the Chemistry of Organic Natural Products
https://www.readbyqxmd.com/read/28194359/discoloration-of-various-cad-cam-blocks-after-immersion-in-coffee
#11
Sasipin Lauvahutanon, Maho Shiozawa, Hidekazu Takahashi, Naohiko Iwasaki, Meiko Oki, Werner J Finger, Mansuang Arksornnukit
OBJECTIVES: This study evaluated color differences (ΔEs) and translucency parameter changes (ΔTPs) of various computer-aided design/computer-aided manufacturing (CAD/CAM) blocks after immersion in coffee. MATERIALS AND METHODS: Eight CAD/CAM blocks and four restorative composite resins were evaluated. The CIE L(*)a(*)b(*) values of 2.0 mm thick disk-shaped specimens were measured using the spectrophotometer on white and black backgrounds (n = 6). The ΔEs and ΔTPs of one day, one week, and one month immersion in coffee or water were calculated...
February 2017: Restorative Dentistry & Endodontics
https://www.readbyqxmd.com/read/28194081/excessive-sleepiness-sleep-hygiene-and-coping-strategies-among-night-bus-drivers-a-cross-sectional-study
#12
Uma Maheswari Krishnaswamy, Mamta S Chhabria, Aditi Rao
BACKGROUND: Sleep disruption and excessive sleepiness are the known consequences of shift work. The recent spate of night-time road and air accidents, with some being directly attributed to driver sleepiness prompted us to undertake this study. AIMS: To screen for excessive sleepiness, coping practices, and post-shift sleep hygiene in night bus drivers. SETTINGS AND DESIGN: This prospective study was carried out on night bus drivers of a public transport organization in Bengaluru, Karnataka, India...
May 2016: Indian Journal of Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/28193407/mechanism-of-action-and-interactions-between-xanthine-oxidase-inhibitors-derived-from-natural-sources-of-chlorogenic-and-ferulic-acids
#13
Urszula Gawlik-Dziki, Dariusz Dziki, Michał Świeca, Renata Nowak
The aim of this study was to estimate the phenolic composition and xanthine oxidase (XO) inhibitory activity of green coffee beans (GCB) and wholemeal wheat flour (WF). Additionally, the type and strength of interaction (expressed as the combination index, CI) and mode of XO inhibition were analyzed. The major phenolic in GCB was 5-caffeoylquinic acid (39.92mg/g dw). The main phenolic acids in WF were trans- and cis-ferulic acids (257 and 165.57mg/100g dw, respectively). Both ferulic and chlorogenic acids individually inhibited XO, and for their combination moderate synergism was found...
June 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28193006/enhanced-laser-desorption-ionization-mass-spectrometric-detection-of-biomolecules-using-gold-nanoparticles-matrix-and-the-coffee-ring-effect
#14
Alyssa L M Marsico, Bradley Duncan, Ryan F Landis, Gulen Yesilbag Tonga, Vincent M Rotello, Richard W Vachet
Nanomaterials have been extensively used as alternate matrices to minimize the low molecular weight interferences observed in typical MALDI but such nanomaterials typically do not improve the spot-to-spot variability that is commonly seen. In this work, we demonstrate that nanoparticles and low matrix concentrations (<2.5 mg/mL) can be used to homogeneously concentrate analytes into a narrow ring by taking advantage of the "coffee ring" effect. Concentration of the samples in this way leads to enhanced signals when compared to conventional MALDI, with higher m/z analytes being enhanced to the greatest extent...
February 15, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28192487/volatile-organic-compounds-of-thai-honeys-produced-from-several-floral-sources-by-different-honey-bee-species
#15
Praetinee Pattamayutanon, Sergio Angeli, Prodpran Thakeow, John Abraham, Terd Disayathanoowat, Panuwan Chantawannakul
The volatile organic compounds (VOCs) of four monofloral and one multifloral of Thai honeys produced by Apis cerana, Apis dorsata and Apis mellifera were analyzed by headspace solid-phase microextraction (HS-SPME) followed by gas chromatography and mass spectrometry (GC-MS). The floral sources were longan, sunflower, coffee, wild flowers (wild) and lychee. Honey originating from longan had more VOCs than all other floral sources. Sunflower honey had the least numbers of VOCs. cis-Linalool oxide, trans-linalool oxide, ho-trienol, and furan-2,5-dicarbaldehyde were present in all the honeys studied, independent of their floral origin...
2017: PloS One
https://www.readbyqxmd.com/read/28190595/fractionated-dynamic-headspace-sampling-in-the-analysis-of-matrices-of-vegetable-origin-in-the-food-field
#16
Erica Liberto, Cecilia Cagliero, Chiara Cordero, Patrizia Rubiolo, Carlo Bicchi, Barbara Sgorbini
Recent technological advances in dynamic headspace sampling (D-HS) and the possibility to automate this sampling method have lead to a marked improvement in its the performance, a strong renewal of interest in it, and have extended its fields of application. The introduction of in-parallel and in-series automatic multi-sampling and of new trapping materials, plus the possibility to design an effective sampling process by correctly applying the breakthrough volume theory, have make profiling more representative, and have enhanced selectivity, and flexibility, also offering the possibility of fractionated enrichment in particular for high-volatility compounds...
February 7, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28185861/what-are-we-drinking-beverages-shown-in-adolescents-favorite-television-shows
#17
Marla E Eisenberg, Nicole I Larson, Sarah E Gollust, Dianne Neumark-Sztainer
BACKGROUND: Media use has been shown to contribute to poor dietary intake; however, little attention has been paid to programming content. The portrayal of health behaviors in television (TV) programming contributes to social norms among viewers, which have been shown to influence adolescent behavior. OBJECTIVE: This study reports on a content analysis of beverages shown in a sample of TV shows popular with a large, diverse group of adolescents, with attention to the types of beverages and differences across shows and characters...
February 2, 2017: Journal of the Academy of Nutrition and Dietetics
https://www.readbyqxmd.com/read/28184158/biological-activity-of-green-synthesized-silver-nanoparticles-depends-on-the-applied-natural-extracts-a-comprehensive-study
#18
Andrea Rónavári, Dávid Kovács, Nóra Igaz, Csaba Vágvölgyi, Imre Miklós Boros, Zoltán Kónya, Ilona Pfeiffer, Mónika Kiricsi
Due to obvious disadvantages of the classical chemical methods, green synthesis of metallic nanoparticles has attracted tremendous attention in recent years. Numerous environmentally benign synthesis methods have been developed yielding nanoparticles via low-cost, eco-friendly, and simple approaches. In this study, our aim was to determine the suitability of coffee and green tea extracts in green synthesis of silver nanoparticles as well as to compare the performance of the obtained materials in different biological systems...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28183287/price-elasticity-of-the-demand-for-soft-drinks-other-sugar-sweetened-beverages-and-energy-dense-food-in-chile
#19
Carlos M Guerrero-López, Mishel Unar-Munguía, M Arantxa Colchero
BACKGROUND: Chile is the second world's largest per capita consumer of caloric beverages. Caloric beverages are associated with overweight, obesity and other chronic diseases. The objective of this study is to estimate the price elasticity of demand for soft drinks, other sugar-sweetened beverages and high-energy dense foods in urban areas in Chile in order to evaluate the potential response of households' consumption to changes in prices. METHODS: We used microdata from the VII Family Budget Survey 2012-2013, which collects information on expenditures made by Chilean urban households on items such as beverages and foods...
February 10, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28182843/inhibitory-effects-of-red-wine-on-lipid-oxidation-in-fish-oil-emulsion-and-angiogenesis-in-zebrafish-embryo
#20
Haiyan Sun, Yulin Zhang, Yixiao Shen, Yongchao Zhu, Hua Wang, Zhimin Xu
The capabilities of red wine against lipid oxidation and angiogenesis were evaluated by using a fish oil emulsion system and an in vivo zebrafish embryos model, respectively. The red wine contained 12 different antioxidant phenolics which levels were led by anthocyanins (140.46 mg/L), catechin (55.08 mg/L), and gallic acid (46.76 mg/L). The diversity of the phenolics in red wine was greater than the tea, coffee, or white wine selected as a peer control in this study. The total phenolics concentration of red wine was 305...
February 9, 2017: Journal of Food Science
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