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https://www.readbyqxmd.com/read/28231617/characterization-of-staphylococcus-epidermidis-strains-isolated-from-industrial-cleanrooms-under-regular-routine-disinfection
#1
U Ribič, A Klančnik, B Jeršek
AIMS: The purpose of this study was the genotypic and phenotypic characterization of 57 strains of Staphylococcus epidermidis isolated from cleanroom environments, based on their biofilm formation and antimicrobial resistance profiles. METHODS AND RESULTS: Biofilm formation was investigated using real-time PCR (icaA, aap, bhp genes), the Congo red agar method, and the crystal violet assay. The majority of the strains (59.7%; 34/57) did not form biofilms according to the crystal violet assay, although the biofilm-associated genes were present in 94...
February 23, 2017: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/28231591/predictive-success-factors-in-selective-upper-airway-stimulation
#2
Clemens Heiser, Benedikt Hofauer
Obstructive sleep apnea is one of the most common diseases in Western industrialized countries. A variety of conservative and surgical treatment options are available for its treatment. In recent years, selective upper airway stimulation (sUAS) has been shown to be effective and safe. Different biomarkers have been investigated as predictive clinical success factors in a number of clinical trials. Age does not matter in sUAS, as compared to its predictive role in other therapies. Weight seems to play a limited role, depending on drug-induced sleep endoscopy to rule out a complete concentric collapse with an increased body mass index...
February 24, 2017: ORL; Journal for Oto-rhino-laryngology and its related Specialties
https://www.readbyqxmd.com/read/28231564/mating-of-2-laboratory-saccharomyces-cerevisiae-strains-resulted-in-enhanced-production-of-2-phenylethanol-by-biotransformation-of-l-phenylalanine
#3
Jolanta Mierzejewska, Aleksandra Tymoszewska, Karolina Chreptowicz, Kamil Krol
2-Phenylethanol (2-PE) is an aromatic alcohol with a rosy scent which is widely used in the food, fragrance, and cosmetic industries. Promising sources of natural 2-PE are microorganisms, especially yeasts, which can produce 2-PE by biosynthesis and biotransformation. Thus, the first challenging goal in the development of biotechnological production of 2-PE is searching for highly productive yeast strains. In the present work, 5 laboratory Saccharomyces cerevisiae strains were tested for the production of 2-PE...
February 24, 2017: Journal of Molecular Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28231539/a-new-model-to-predict-diffusive-self-heating-during-composting-incorporating-the-reaction-engineering-approach-rea-framework
#4
Aditya Putranto, Xiao Dong Chen
During composting, self-heating may occur due to the exothermicities of the chemical and biological reactions. An accurate model for predicting maximum temperature is useful in predicting whether the phenomena would occur and to what extent it would have undergone. Elevated temperatures would lead to undesirable situations such as the release of large amount of toxic gases or sometimes would even lead to spontaneous combustion. In this paper, we report a new model for predicting the profiles of temperature, concentration of oxygen, moisture content and concentration of water vapor during composting...
February 1, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28231437/classification-of-organic-beef-freshness-using-vnir-hyperspectral-imaging
#5
Stuart O J Crichton, Sascha M Kirchner, Victoria Porley, Stefanie Retz, Gardis von Gersdorff, Oliver Hensel, Martin Weygandt, Barbara Sturm
Consumer trust in the food industry is heavily reliant upon accurate labelling of meat products. As such, methods, which can verify whether meat is correctly labelled are of great value to producers, retailers, and consumers. This paper illustrates two approaches to classify between, fresh and frozen thawed, and in a novel manner matured and matured frozen-thawed, as well as fresh and matured beef using the 500-1010nm waveband, captured using hyperspectral imaging, and CIELAB measurements. The results show successful classification based upon CIELAB between 1) fresh and frozen-thawed (CCR=0...
February 8, 2017: Meat Science
https://www.readbyqxmd.com/read/28231380/perioperative-medications-for-preventing-temporarily-increased-intraocular-pressure-after-laser-trabeculoplasty
#6
REVIEW
Linda Zhang, Jennifer S Weizer, David C Musch
BACKGROUND: Glaucoma is the international leading cause of irreversible blindness. Intraocular pressure (IOP) is the only currently known modifiable risk factor; it can be reduced by medications, incisional surgery, or laser trabeculoplasty (LTP). LTP reduces IOP by 25% to 30% from baseline, but early acute IOP elevation after LTP is a common adverse effect. Most of these IOP elevations are transient, but temporarily elevated IOP may cause further optic nerve damage, worsening of glaucoma requiring additional therapy, and permanent vision loss...
February 23, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28231319/development-of-a-keratinase-activity-assay-using-recombinant-chicken-feather-keratin-substrates
#7
Hyeon-Su Jin, Seon Yeong Park, Kyungmin Kim, Yong-Jik Lee, Gae-Won Nam, Nam Joo Kang, Dong-Woo Lee
Poultry feathers consist mainly of the protein keratin, which is rich in β-pleated sheets and consequently resistant to proteolysis. Although many keratinases have been identified, the reasons for their substrate specificity towards β-keratin remain unclear due to difficulties in preparing a soluble feather keratin substrate for use in activity assays. In the present study, we overexpressed Gallus gallus chromosomes 2 and 27 β-keratin-encoding genes in Escherichia coli, purified denatured recombinant proteins by Ni2+ affinity chromatography, and refolded by stepwise dialysis to yield soluble keratins...
2017: PloS One
https://www.readbyqxmd.com/read/28231316/a-balanced-solution-to-the-cumulative-threat-of-industrialized-wind-farm-development-on-cinereous-vultures-aegypius-monachus-in-south-eastern-europe
#8
Dimitris P Vasilakis, D Philip Whitfield, Vassiliki Kati
Wind farm development can combat climate change but may also threaten bird populations' persistence through collision with wind turbine blades if such development is improperly planned strategically and cumulatively. Such improper planning may often occur. Numerous wind farms are planned in a region hosting the only cinereous vulture population in south-eastern Europe. We combined range use modelling and a Collision Risk Model (CRM) to predict the cumulative collision mortality for cinereous vulture under all operating and proposed wind farms...
2017: PloS One
https://www.readbyqxmd.com/read/28231264/precision-engineering-for-prrsv-resistance-in-pigs-macrophages-from-genome-edited-pigs-lacking-cd163-srcr5-domain-are-fully-resistant-to-both-prrsv-genotypes-while-maintaining-biological-function
#9
Christine Burkard, Simon G Lillico, Elizabeth Reid, Ben Jackson, Alan J Mileham, Tahar Ait-Ali, C Bruce A Whitelaw, Alan L Archibald
Porcine Reproductive and Respiratory Syndrome (PRRS) is a panzootic infectious disease of pigs, causing major economic losses to the world-wide pig industry. PRRS manifests differently in pigs of all ages but primarily causes late-term abortions and stillbirths in sows and respiratory disease in piglets. The causative agent of the disease is the positive-strand RNA PRRS virus (PRRSV). PRRSV has a narrow host cell tropism, limited to cells of the monocyte/macrophage lineage. CD163 has been described as a fusion receptor for PRRSV, whereby the scavenger receptor cysteine-rich domain 5 (SRCR5) region was shown to be an interaction site for the virus in vitro...
February 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28231182/overview-on-the-general-approaches-to-improve-gluten-free-pasta-and-bread
#10
REVIEW
Lucia Padalino, Amalia Conte, Matteo Alessandro Del Nobile
The use of gluten-free products is increasing since a growing number of people are suffering from celiac disease and thereby need gluten-free diet. Gluten is responsible for the visco-elastic characteristics of wheat-based products; therefore, its lack makes the gluten-free products not similar to wheat-based product, with scarce textural properties. This reason constitutes the major industrial limitation. Thus, obtaining good-quality gluten-free products represents a technological challenge. This review reports the main strategies adopted to produce high quality gluten-free pasta and bread...
December 9, 2016: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/28231170/fermentation-assisted-extraction-of-isothiocyanates-from-brassica-vegetable-using-box-behnken-experimental-design
#11
Amit K Jaiswal, Nissreen Abu-Ghannam
Recent studies showed that Brassica vegetables are rich in numerous health-promoting compounds such as carotenoids, polyphenols, flavonoids, and glucosinolates (GLS), as well as isothiocyanates (ITCs) and are involved in health promotion upon consumption. ITCs are breakdown products of GLS, and typically used in the food industry as a food preservative and colouring agent. They are also used in the pharmaceutical industry due to their several pharmacological properties such as antibacterial, antifungal, antiprotozoal, anti-inflammatory, and chemoprotective effects, etc...
November 4, 2016: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/28231169/an-evaluation-of-alternatives-to-nitrites-and-sulfites-to-inhibit-the-growth-of-salmonella-enterica-and-listeria-monocytogenes-in-meat-products
#12
Alexandre Lamas, José Manuel Miranda, Beatriz Vázquez, Alberto Cepeda, Carlos Manuel Franco
In recent years, the use of nitrites and sulfites as food preservatives has been a cause for concern due to the health problems that these additives can cause in humans. Natural products have been studied as an alternative, but most of them have hardly been applied in the food industry for technological and economic reasons. In this sense, organic salts such as sodium acetate are a good alternative due to their affordability. Thus, this study evaluated the capacity of sodium nitrite, sodium sulfite, a sodium acetate product (TQI C-6000), and chitosan to inhibit two important foodborne pathogens, Salmonella enterica and Listeria monocytogenes...
October 31, 2016: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/28231166/production-and-properties-of-a-thermostable-ph-stable-exo-polygalacturonase-using-aureobasidium-pullulans-isolated-from-saharan-soil-of-algeria-grown-on-tomato-pomace
#13
Leila Bennamoun, Serge Hiligsmann, Scheherazad Dakhmouche, Amel Ait-Kaki, Fatima-Zohra Kenza Labbani, Tahar Nouadri, Zahia Meraihi, Benedetta Turchetti, Pietro Buzzini, Philippe Thonart
Polygalacturonase is a valuable biocatalyst for several industrial applications. Production of polygalacturonase using the Aureobasidium pullulans stain isolated from Saharan soil of Algeria was investigated. Its capacity to produce polygalacturonase was assessed under submerged culture using tomato pomace as an abundant agro-industrial substrate. Optimization of the medium components, which enhance polygalacturonase activity of the strain Aureobasidium pullulans, was achieved with the aid of response surface methodology...
October 29, 2016: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/28231165/seafood-safety-and-quality-the-consumer-s-role
#14
Doris T Hicks
All the good news about seafood-the health and nutritional benefits, the wide varieties and flavors-has had a positive effect on consumption: people are eating more seafood (http://www.seagrant.sunysb.edu/seafood/pdfs/SeafoodSavvy.pdf). Yet consumers want to be assured that seafood is as safe as, or safer to eat than, other foods. When you hear "seafood safety", think of a safety net designed to protect you, the consumer, from food-borne illness. Every facet of the seafood industry, from harvester to consumer, plays a role in holding up the safety net...
October 28, 2016: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/28231145/recent-advances-in-techniques-for-starch-esters-and-the-applications-a-review
#15
REVIEW
Jing Hong, Xin-An Zeng, Charles S Brennan, Margaret Brennan, Zhong Han
Esterification is one of the most important methods to alter the structure of starch granules and improve its applications. Conventionally, starch esters are prepared by conventional or dual modification techniques, which have the disadvantages of being expensive, have regent overdoses, and are time-consuming. In addition, the degree of substitution (DS) is often considered as the primary factor in view of its contribution to estimate substituted groups of starch esters. In order to improve the detection accuracy and production efficiency, different detection techniques, including titration, nuclear magnetic resonance (NMR), Fourier transform infrared spectroscopy (FT-IR), thermal gravimetric analysis/infrared spectroscopy (TGA/IR) and headspace gas chromatography (HS-GC), have been developed for DS...
July 9, 2016: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/28231137/evaluation-of-electrolytically-generated-hypochlorous-acid-electrolyzed-water-for-sanitation-of-meat-and-meat-contact-surfaces
#16
Shawnna Veasey, Peter M Muriana
'Electrolyzed water' generators are readily available in the food industry as a renewable source of hypochlorous acid that eliminates the need for workers to handle hazardous hypochlorite concentrates. We applied electrolyzed water (EW) directly to multi-strain cocktails of Listeria monocytogenes, E. coli O157:H7, and Salmonella sp. at 250 ppm free available chlorine (FAC) and achieved greater than 6-log reductions in 2 min. Lower EW values were examined as antimicrobial interventions for fresh meat (beef carcasses), processed meats (frankfurters), and food contact surfaces (slicing blades)...
June 13, 2016: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/28231123/antibacterial-and-antioxidant-activities-of-essential-oils-from-artemisia-herba-alba-asso-pelargonium-capitatum-%C3%A3-radens-and-laurus-nobilis-l
#17
Ragina Rafiq, Saeed A Hayek, Ugochukwu Anyanwu, Bonita I Hardy, Valerie L Giddings, Salam A Ibrahim, Reza Tahergorabi, Hye Won Kang
Essential oils are natural antimicrobials that have the potential to provide a safer alternative to synthetic antimicrobials currently used in the food industry. Therefore, the aim of this study was to evaluate the antimicrobial and antioxidant activities of essential oils from white wormwood, rose-scented geranium and bay laurel against Salmonella typhimurium and Escherichia coli O157:H7 on fresh produce and to examine consumer acceptability of fresh produce treated with these essential oils. Our results showed that essential oil derived from rose-scented geranium exhibited the most effective antimicrobial activity at the same and similar minimum inhibition concentration levels (0...
April 11, 2016: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/28231122/phenolic-profiles-and-antioxidant-activity-of-germinated-legumes
#18
Do Tan Khang, Tran Nhan Dung, Abdelnaser Abdelghany Elzaawely, Tran Dang Xuan
Bioactive compounds, which are naturally produced in plants, have been concerned with the food and pharmaceutical industries because of the pharmacological effects on humans. In this study, the individual phenolics of six legumes during germination and antioxidant capacity from sprout extracts were determined. It was found that the phenolic content significantly increased during germination in all legumes. Peanuts showed the strongest antioxidant capacity in both the DPPH• (1,1-diphenyl-2-picrylhydrazyl) method and the reducing power assay (32...
April 9, 2016: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/28231081/improving-bread-quality-with-the-application-of-a-newly-purified-thermostable-%C3%AE-amylase-from-rhizopus-oryzae-fsis4
#19
Amel Ait Kaki El-Hadef El-Okki, Mohammed Gagaoua, Hayat Bourekoua, Kahina Hafid, Leila Bennamoun, Shahrazed Djekrif-Dakhmouche, Mohamed El-Hadef El-Okki, Zahia Meraihi
A new thermostable α-amylase from Rhizopus oryzae FSIS4 was purified for first time and recovered in a single step using a three-phase partitioning (TPP) system. The fungal α-amylase, at a concentration of 1.936 U per kg of flour, was used in bread-making and compared to the commercial enzyme. The results showed a significant effect of the recovered α-amylase in the prepared bread and allowed us to improve the quality of the bread. The study indicated clearly that the recovered α-amylase is a potential candidate for future applications in the bread-making industry and in other food biotechnology applications...
January 1, 2017: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/28230979/simple-expendable-3d-printed-microfluidic-systems-for-sample-preparation-of-petroleum
#20
Erica Megumi Kataoka, Rui Cesar Murer, Jandyson Machado Santos, Rogerio Mesquita de Carvalho, Marcos Nogueira Eberlin, Fabio Augusto, Ronei Jesus Poppi, Angelo Luiz Gobbi, Leandro Wang Hantao
In this study, we introduce a simple protocol to manufacture disposable, 3D-printed microfluidic systems for sample preparation of petroleum. Such platform is produced with a consumer-grade 3D-printer, using fused deposition modeling. Successful incorporation of solid-phase extraction (SPE) to microchip was ensured by facile 3D element integration using proposed approach. This 3D-printed μSPE device was applied to challenging matrices in oil & gas industry, such as crude oil and oil-brine emulsions. Case studies investigated important limitations of non-silicon and non-glass microchips, namely, resistance to nonpolar solvents and conservation of sample integrity...
February 23, 2017: Analytical Chemistry
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