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https://www.readbyqxmd.com/read/28732117/identification-by-phenotypic-and-genetic-approaches-of-an-indigenous-saccharomyces-cerevisiae-wine-strain-with-high-desiccation-tolerance
#1
Marianna Zambuto, Rossana Romaniello, Nicoletta Guaragnella, Patrizia Romano, Sonia Votta, Angela Capece
During active dry yeast (ADY) production process, cells are exposed to multiple stresses, such as thermal, oxidative and hyperosmotic shock. Previously, by analyzing cells in exponential growth phase, we selected an indigenous Saccharomyces cerevisiae wine strain, namely CD-6Sc, for its higher tolerance to desiccation and higher expression of specific desiccation stress-related genes in comparison to other yeast strains. In this study, we performed a desiccation treatment on stationary phase cells by comparing the efficacy of two different methods: a "laboratory dry test" in a small-scale (mild stress) and a treatment by spray-drying (severe stress), one of the most appropriate preservation method for yeasts and other micro-organisms...
July 21, 2017: Yeast
https://www.readbyqxmd.com/read/28731891/white-wine-consumption-influences-inflammatory-phase-of-repair-following-myocardial-infarction-in-rats
#2
Nikola Ključević, Ana Marija Milat, Mia Grga, Ivana Mudnić, Mladen Boban, Ivica Grković
Effects of white wine consumption on the expression of inflammatory markers/mediators (MMP-2, MMP-9, NF-ĸB p65 and TGF-β1) in myocardial tissue following experimentally induced permanent myocardial ischemia was investigated. Male Sprague-Dawley rats were given either a combination of white wine and water or water only, for 28 days. After coronary ligation, animals were left to survive for 24 hours. Three representative areas: infarct/ischemic, peri-infarct/border zone and control/non-ischemic zones were analysed for expression of immunoreactivity by measuring threshold area % of signal density...
July 19, 2017: Journal of Cardiovascular Pharmacology
https://www.readbyqxmd.com/read/28731564/alcohol-related-knowledge-and-alcohol-related-norms-in-four-to-six-year-olds-evidence-from-the-dutch-electronic-appropriate-beverage-task
#3
Carmen Voogt, Roy Otten, Marloes Kleinjan, Rutger Engels, Emmanuel Kuntsche
BACKGROUND: Limited research is available on children's alcohol-related knowledge and alcohol-related norms, yet a better comprehension of these factors may be crucial in explaining alcohol use later in life. This study provides insights into alcohol-related knowledge and alcohol-related norms in four- to six-year-olds. METHODS: Participating children (N=329; 48.9% boys) were shown, on a tablet, 18 drawings depicting 72 male and female adults and/or children in various situations and were asked to indicate what the depicted persons drank by touching one of 12 depicted beverages (four alcoholic; eight non-alcoholic)...
July 21, 2017: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/28731350/gastric-and-duodenal-ethanol-concentrations-after-intake-of-alcoholic-beverages-in-postprandial-conditions
#4
Jari Rubbens, Danny Riethorst, Joachim Brouwers, Kris Wolfs, Erwin Adams, Jan Tack, Patrick Augustijns
INTRODUCTION: This study determined intraluminal ethanol concentrations (stomach and duodenum) in fed healthy volunteers after the consumption of common alcoholic beverages (beer, wine and whisky). The results of this study were compared with a previous study in fasted volunteers. MATERIALS AND METHODS: Five healthy volunteers were recruited in a cross-over study. The fed state was simulated by ingestion of 250 mL of Nutridrink Compact® Neutral. Volunteers subsequently consumed two standard units of beer (Stella Artois®, 500 mL, 5...
July 21, 2017: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/28730980/validation-of-spectrophotometric-methods-for-the-determination-of-total-polyphenol-and-total-flavonoid-content
#5
Petra Matić, Marija Sabljić, Lidija Jakobek
The aim of this study was to validate spectrophotometric methods for the measurement of total polyphenol (TP;via the Folin–Ciocalteu method) and total flavonoid (TF) content [via the aluminum chloride (AlCl₃) method]. Validation parameters of these methods were determined, including linearity, sensitivity, precision (intra-assay and intermediate), accuracy, LOD, and LOQ. For the validation process, groups of polyphenol standards were used, including phenolic acids (gallic, p-coumaric, caffeic, and chlorogenic acids), flavan-3-ols [(+)-catechin and procyanidins B1 and B2], flavonols (quercetin and quercetin-3-rutinoside), and dihydrochalcones (phloretin and phloretin-2-glucoside)...
July 20, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/28730306/disposable-electrochemical-immunosensor-for-brettanomyces-bruxellensis-based-on-nanogold-reduced-graphene-oxide-hybrid-nanomaterial
#6
Boryana Borisova, María L Villalonga, María Arévalo-Villena, Abderrahmane Boujakhrout, Alfredo Sánchez, Concepción Parrado, José M Pingarrón, Ana Briones-Pérez, Reynaldo Villalonga
The assembly of a novel disposable amperometric immunosensor for the detection of the red wine spoilage yeast Brettanomyces bruxellensis is reported. The nanostructured sensing interface was prepared by first coating carbon screen printed electrodes with a gold nanoparticles-reduced graphene oxide hybrid nanomaterial, which was then modified with 3-mercaptopropionic acid to further immobilize specific antibodies for B. bruxellensis via a carbodiimide-coupling reaction. The functionalized electrode allowed the amperometric detection of B...
July 20, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28729784/discoloration-of-different-esthetic-restorative-materials-a-spectrophotometric-evaluation
#7
Matteo Ceci, Matteo Viola, Davide Rattalino, Riccardo Beltrami, Marco Colombo, Claudio Poggio
OBJECTIVE: A crucial property of esthetic restorative materials is their long-term color stability. The aim of this in vitro study was to evaluate the color stability of esthetic restorative materials (one microfilled flowable composite, one nanofilled composite, one nanoybrid composite, one microfilled composite, and one nanoybrid ormocer-based composite) after surface roughening with cola and exposure to different staining solutions (coffee and red wine). MATERIALS AND METHODS: All materials were polymerized into silicone rubber rings (2 mm × 6 mm × 8 mm) to obtain 150 specimens identical in size...
April 2017: European Journal of Dentistry
https://www.readbyqxmd.com/read/28728929/an-evaporation-assisted-dispersive-liquid-liquid-microextraction-technique-as-a-simple-tool-for-high-performance-liquid-chromatography-tandem-mass-spectrometry-determination-of-insecticides-in-wine
#8
Irina Timofeeva, Daria Kanashina, Leonid Moskvin, Andrey Bulatov
A sample pre-treatment technique based on evaporation-assisted dispersive liquid-liquid microextraction (EVA-DLLME), followed by HPLC-MS/MS has been developed for the determination of organophosphate insecticides (malathion, diazinon, phosalone) in wine samples. The procedure includes the addition of mixture of organic solvents (with density higher than water), consisting of the extraction (low density) and volatile (high density) solvents, to aqueous sample followed by heating of the mixture obtained, what promotes the volatile solvent evaporation and moving extraction solvent droplets from down to top of the aqueous sample and, as a consequence, microextraction of target analytes...
July 11, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28725986/patterns-of-alcohol-consumption-and-risk-of-falls-in-older-adults-a-prospective-cohort-study
#9
R Ortolá, E García-Esquinas, I Galán, P Guallar-Castillón, E López-García, J R Banegas, F Rodríguez-Artalejo
Falls are a major health problem in older adults, but their relationship with alcohol consumption in this population remains unclear. In a cohort with 2170 older adults followed up for 3.3 years, both moderate drinking and the Mediterranean drinking pattern were associated with a lower risk of falls and injurious falls. INTRODUCTION: This study aims to examine the association between certain patterns of alcohol consumption, including the Mediterranean drinking pattern (MDP), and the risk of falls in older adults...
July 19, 2017: Osteoporosis International
https://www.readbyqxmd.com/read/28724825/a-rare-case-of-overlapping-sturge-weber-syndrome-and-klippel-trenaunay-syndrome-associated-with-bilateral-refractory-childhood-glaucoma
#10
Manju R Pillai, P P Hasini, Ashish Ahuja, S R Krishnadas
A 6-year-old girl presented with blurred vision and was found to have elevated intraocular pressure (IOP) and glaucomatous optic disc damage in both eyes. She also displayed capillary malformations on the face (port-wine stain), upper back and all four limbs, angiomatosis in the brain and had hypertrophy of the left upper and lower limbs typical of overlapping Sturge-Weber syndrome and Klippel-Trenaunay syndromes. She was initially managed with IOP lowering topical medications but required trabeculectomy in the right eye followed by Ahmed valve implantation in both eyes...
July 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/28722782/development-of-blueberry-liquor-influence-of-distillate-sweetener-and-fruit-quantity
#11
Ilda Caldeira, Daniel Lopes, Teresa Delgado, Sara Canas, Ofélia Anjos
BACKGROUND: In this work different formulations of blueberry liquor were tested and characterized based on their physicochemical and sensory characteristics. RESULTS: Three factors were evaluated: the distillate used to produce the liquor (wine spirit or grape marc spirit); the sweetener (white sugar or honey) and the fruit quantity (two doses). For each liquor, pH, total acidity, dry soluble solids content, dry extract, alcoholic strength, reducing sugars, colour intensity, methanol content, acetaldehyde and fusel alcohols were determined...
July 19, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28722206/alcohol-consumption-and-risk-of-urothelial-cell-bladder-cancer-in-the-european-prospective-investigation-into-cancer-and-nutrition-cohort
#12
E Botteri, P Ferrari, N Roswall, A Tjønneland, A Hjartåker, J M Huerta, R T Fortner, A Trichopoulou, A Karakatsani, C La Vecchia, V Pala, A Perez-Cornago, E Sonestedt, F Liedberg, K Overvad, M J Sánchez, I T Gram, M Stepien, L Trijsburg, L Börje, M Johansson, T Kühn, S Panico, R Tumino, H B Bueno-de-Mesquita, E Weiderpass
Findings on the association between alcohol consumption and bladder cancer are inconsistent. We investigated that association in the European Prospective Investigation into Cancer and Nutrition cohort. We included 476,160 individuals mostly aged 35-70 years, enrolled in ten countries and followed for 13.9 years on average. Hazard ratios (HR) for developing urothelial cell carcinoma (UCC; 1,802 incident cases) were calculated using Cox proportional hazards models. Alcohol consumption at baseline and over the life course was analyzed, as well as different types of beverages (beer, wine, spirits)...
July 19, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28721728/reduced-production-of-higher-alcohols-by-saccharomyces-cerevisiae-in-red-wine-fermentation-by-simultaneously-overexpressing-bat1-and-deleting-bat2
#13
Lijuan Ma, Shiyong Huang, Liping Du, Ping Tang, Dongguang Xiao
In red wine, the contents of higher alcohols and ethyl carbamate (EC) are two significant health concerns. To reduce the production of higher alcohols by wine yeast YZ22 with low production of EC, one BAT2 was replaced by a BAT1 expression cassette first and then another BAT2 was deleted to obtain the mutant SYBB3. Real-Time quantitative PCR showed that the relative expression level of BAT1 in SYBB3 improved 28 times compared with that in YZ22. The yields of isobutanol and 3-methyl-1-butanol produced by mutant SYBB3 reduced by 39...
July 19, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28718805/emerging-fusarium-and-alternaria-mycotoxins-occurrence-toxicity-and-toxicokinetics
#14
REVIEW
Sophie Fraeyman, Siska Croubels, Mathias Devreese, Gunther Antonissen
Emerging Fusarium and Alternaria mycotoxins gain more and more interest due to their frequent contamination of food and feed, although in vivo toxicity and toxicokinetic data are limited. Whereas the Fusarium mycotoxins beauvericin, moniliformin and enniatins particularly contaminate grain and grain-based products, Alternaria mycotoxins are also detected in fruits, vegetables and wines. Although contamination levels are usually low (µg/kg range), higher contamination levels of enniatins and tenuazonic acid may occasionally occur...
July 18, 2017: Toxins
https://www.readbyqxmd.com/read/28718057/immobilized-enzymes-from-geotrichum-spp-improve-wine-quality
#15
Yao Lu, Jing Zhu, Junling Shi, Yanlin Liu, Dongyan Shao, Chunmei Jiang
Higher alcohols are the byproducts of yeasts in alcohol fermentation and are harmful to human health at high concentrations. In this study, immobilized crude enzymes extracted from Geotrichum spp. strains S12 and S13 were separately employed to treat red wine, then GC and GC-MS analyses were used to determine the profiles of volatile compounds in untreated and treated wine samples. Immobilized enzymes from S13 (SA-S13E) were more active in decreasing higher alcohols than enzymes from S12. Conditions for preparing SA-S13E were optimized, and best results were obtained at a sodium alginate concentration of 35 g/L, calcium chloride of 20 g/L, and crude enzyme dosage of 3 mL...
July 17, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28717999/macro-and-microclimate-conditions-may-alter-grapevine-deacclimation-variation-in-thermal-amplitude-in-two-contrasting-wine-regions-from-north-and-south-america
#16
Francisco Gonzalez Antivilo, Rosalía Cristina Paz, Markus Keller, Roberto Borgo, Jorge Tognetti, Fidel Roig Juñent
Low temperature is a limiting factor that affects vineyard distribution globally. The level of cold hardiness acquired during the dormant season by Vitis sp. is crucial for winter survival. Most research published on this topic has been generated beyond 40° N latitude, where daily mean temperatures may attain injurious levels during the dormant season resulting in significant damage to vines and buds. Symptoms of cold injury have been identified in Mendoza (32-35° S latitude), a Southern Hemisphere wine region characterized by a high thermal amplitude, and warm winds during the dormant season...
July 17, 2017: International Journal of Biometeorology
https://www.readbyqxmd.com/read/28715254/effects-of-ethyl-%C3%AE-d-glucoside-on-human-dermal-fibroblasts
#17
Takayuki Bogaki, Keiichi Mitani, Yuki Oura, Kenji Ozeki
Ethyl α-d-glucoside (α-EG) is a glycoside present in sake, Japanese rice wine. Previous studies have reported that α-EG suppresses skin roughness after ultraviolet B irradiation, transepidermal water loss, and hepatic function disorder, and has a skin moisturizing effect. In this study, 0.48 μM of α-EG was found to increase the proliferation of normal human dermal fibroblasts (NHDF) by 121.0%, and the amount of collagen I produced by NHDF increased by 159.6% at an α-EG concentration of 0.048 μM, compared to those in cells cultured without α-EG...
July 17, 2017: Bioscience, Biotechnology, and Biochemistry
https://www.readbyqxmd.com/read/28713820/antioxidant-properties-of-natchez-and-triple-crown-blackberries-using-korean-traditional-winemaking-techniques
#18
Youri Joh, Niels Maness, William McGlynn
This research evaluated blackberries grown in Oklahoma and wines produced using a modified traditional Korean technique employing relatively oxygen-permeable earthenware fermentation vessels. The fermentation variables were temperature (21.6°C versus 26.6°C) and yeast inoculation versus wild fermentation. Wild fermented wines had higher total phenolic concentration than yeast fermented wines. Overall, wines had a relatively high concentration of anthocyanin (85-320 mg L(-1) malvidin-3-monoglucoside) and antioxidant capacity (9776-37845 µmol Trolox equivalent g(-1))...
2017: International journal of food science
https://www.readbyqxmd.com/read/28713399/metabolite-profiling-reveals-developmental-inequalities-in-pinot-noir-berry-tissues-late-in-ripening
#19
Amanda M Vondras, Mauro Commisso, Flavia Guzzo, Laurent G Deluc
Uneven ripening in Vitis vinifera is increasingly recognized as a phenomenon of interest, with substantial implications for fruit and wine composition and quality. This study sought to determine whether variation late in ripening (∼Modified Eichhorn-Lorenz stage 39) was associated with developmental differences that were observable as fruits within a cluster initiated ripening (véraison). Four developmentally distinct ripening classes of berries were tagged at cluster véraison, sampled at three times late in ripening, and subjected to untargeted HPLC-MS to measure variation in amino acids, sugars, organic acids, and phenolic metabolites in skin, pulp, and seed tissues separately...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28713396/system-level-and-granger-network-analysis-of-integrated-proteomic-and-metabolomic-dynamics-identifies-key-points-of-grape-berry-development-at-the-interface-of-primary-and-secondary-metabolism
#20
Lei Wang, Xiaoliang Sun, Jakob Weiszmann, Wolfram Weckwerth
Grapevine is a fruit crop with worldwide economic importance. The grape berry undergoes complex biochemical changes from fruit set until ripening. This ripening process and production processes define the wine quality. Thus, a thorough understanding of berry ripening is crucial for the prediction of wine quality. For a systemic analysis of grape berry development we applied mass spectrometry based platforms to analyse the metabolome and proteome of Early Campbell at 12 stages covering major developmental phases...
2017: Frontiers in Plant Science
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