Staphylococcus aureus

Fri, 12/18/2015 - 01:49
Abstract Nisin is a bacteriocin produced by a group of Gram-positive bacteria that belongs to Lactococcus and Streptococcus species. Nisin is classified as a Type A (I) lantibiotic that is synthesized from mRNA and the translated peptide contains several unusual amino acids due to post-translational modifications. Over the past few decades, nisin has been used widely as a food biopreservative....
Thu, 12/17/2015 - 00:00
Various variants of ISO 6888-1:1999 and ISO 6888-3:2003 methods for the detection of Staphylococcus aureus were evaluated and improved for their application to conduct analysis in spices and herbs. Improvement substantiated in washing of the sample to remove compounds interfering with the analysis and in the use of PCR for final detection, instead of plating on Baird-Parker...
Wed, 12/16/2015 - 01:34
Abstract AimsTo gain an understanding of the growth kinetics of Staphylococcus aureus to ensure the safety of pork, and to develop a predictive growth model of S. aureus in raw pork, ham, and sausage pork under specific storage time and temperature conditions. Methods and ResultsGrowth of S. aureus was evaluated at 5–40°C using 5–6 replicates in each sampling time in order to capture experimental...
Tue, 12/15/2015 - 02:00
Preliminary examination of the antimicrobial activity of lactic acid against nine bacteria (Escherichia coli, Proteus mirabilis, Salmonella enteritidis, Pseudomonas aeruginosa, Staphylococcus aureus, Enterococcus faecalis, Listeria monocytogenes, Bacillus cereus and Bacillus megaterium) and three yeasts (Rhodotorula sp., Saccharomyces cerevisiae and Candida albicans) was performed using disc...
Fri, 12/11/2015 - 17:00
Norberto González-Juarbe, Ryan Paul Gilley, Cecilia Anahí Hinojosa, Kelley Margaret Bradley, Akinobu Kamei, Geli Gao, Peter Herman Dube, Molly Ann Bergman, Carlos Javier Orihuela Necroptosis is a highly pro-inflammatory mode of cell death regulated RIP (or RIPK)1 and RIP3 kinases and mediated the effector MLKL. We report that diverse bacterial pathogens that produce a pore-forming toxin (PFT)...
Sat, 12/05/2015 - 00:00
Abstract Effects of nano-kaolin incorporation into semolina films on the physical, mechanical, thermal, barrier and antimicrobial properties of the resulting bio-nanocomposite films were investigated. The properties included crystal structure (by X-ray diffraction), mechanical resistance, color, Fourier transform infrared spectra, decomposition temperature, water-vapor...
Fri, 12/04/2015 - 17:00
Yang Yue, Huahua Yu, Rongfeng Li, Ronge Xing, Song Liu, Pengcheng Li Fungi isolated from marine invertebrates are of considerable importance as new promising sources of unique secondary metabolites with significant biomedical potential. However, the cultivable fungal community harbored in jellyfish was less investigated. In this work, we seek to recover symbiotic fungi from different tissues of...
Thu, 12/03/2015 - 03:59
Publication date: Available online 10 November 2015 Author(s): U. Gonzales-Barron, V. Cadavez, A.P. Pereira, A. Gomes, J.P. Araújo, M.J. Saavedra, L. Estevinho, F. Butler, P. Pires, T. Dias Linguiça is a Portuguese traditional fermented sausage whose microbiological quality and safety can be highly variable. In order to elucidate risk factors and the particularities of...
Mon, 11/23/2015 - 18:57
Publication date: Available online 10 November 2015 Author(s): Gregoire Seyrig, Robert D. Stedtfeld, Dieter M. Tourlousse, Farhan Ahmad, Keara Towery, Alison M. Cupples, James M. Tiedje, Syed A. Hashsham Loop-mediated isothermal amplification (LAMP) is increasingly used for point-of-care nucleic acid based diagnostics. LAMP can be monitored in real-time by measuring the...
Fri, 11/20/2015 - 16:09
The aim of this study was to investigate the effect of two newly introduced extraction methods, ohmic-assisted hydrodistillation (OAHD) and microwave-assisted hydrodistillation (MAHD), on the antioxidant and antibacterial activity of the Satureja macrosiphonia essential oil. The results were compared with conventional hydrodistillation (HD). The investigated essential oils were rich in...
Fri, 11/20/2015 - 14:18
Abstract Staphylococcus aureus (S. aureus) can cause mastitis in cattle and, therefore, can be present in milk. This study was undertaken to determine the prevalence of coagulase positive S. aureus and its enterotoxin genes sea, seb, and sec in isolates recovered from raw milk, feta cheese, and human hand swabs of milk and cheese handlers in Beni-Suef province, Egypt. A total of 100 samples of...
Wed, 11/18/2015 - 16:47
Abstract The impact of carvacrol at different levels (0.1%, 0.5%, and 1%) on ammonia (AMN) and biogenic amines (BAs) production by 8 common foodborne pathogens (FBPs) (Staphylococcus aureus, Escherichia coli, Klebsiella pneumoniae, Enterococcus faecalis, Pseudomonas aeruginosa, Listeria monocytogenes, Aeromonas hydrophila, and Salmonella Paratyphi A) was studied using a rapid high-performance...
Wed, 11/11/2015 - 06:59
LWT
Publication date: March 2016 Source:LWT - Food Science and Technology, Volume 66 Author(s): Maryam Ronaghi, Sarah Beamer, Jacek Jaczynski, Kristen E. Matak The bactericidal effectiveness of a pH-shift protein recovery process was tested against Staphylococcus aureus. Protein from ground silver carp inoculated with S. aureus was solubilized at pH 2.5, 3.0, 11.5, or 12.5 with the...
Wed, 11/11/2015 - 06:59
LWT
Publication date: March 2016 Source:LWT - Food Science and Technology, Volume 66 Author(s): Mina Ghabraie, Khanh Dang Vu, Lina Tata, Stéphane Salmieri, Monique Lacroix The antibacterial activity of 32 Essential Oils (EOs) was assessed against four pathogenic bacteria (Escherichia coli, Listeria monocytogenes, Staphylococcus aureus, and Salmonella Typhimurium) and one spoilage...
Tue, 11/10/2015 - 15:43
Abstract This study evaluated Staphylococcus aureus growth and subsequent staphylococcal enterotoxin A production in tryptone soy broth and on ready-to-eat cooked fish paste at 12 to 37 °C, as well as cross-contamination between stainless steel, polyethylene, and latex glove at room temperature. A model was developed using Barany and Roberts's growth model, which satisfactorily described the...
Thu, 11/05/2015 - 15:02
Abstract Staphylococcus aureus is a Gram-positive spherically-shaped bacterium capable of producing heat-stable enterotoxins that cause acute gastrointestinal diseases. The growth of this pathogen in food is a major threat to public health worldwide. Potato salad is a frequent vehicle for infection and food poisoning caused by S. aureus. Therefore, the objective of this study was to investigate...
Thu, 11/05/2015 - 15:01
Abstract Cheese contaminations with foodborne bacterial pathogens, and their health outbreaks, are serious worldwide problems that could happen from diverse sources during cheese production or storage. Plants, and their derivatives, were always regarded as the potential natural and safe antimicrobial alternatives for food preservation and improvement. The extracts from many plants, which are...
Wed, 10/28/2015 - 16:21
Abstract The microbiological quality of 132 dried pasta products available on the German market, originating from 11 different countries, was studied. Sample materials included soft or durum wheat products, some of which produced with other ingredients such as eggs, spices, or vegetables. Parameters included hygiene indicators (aerobic plate count, mold count, the presence of Enterobacteriaceae)...
Sat, 10/24/2015 - 02:27
The objective of this study was to evaluate the effectiveness of slightly acidic electrolyzed water (SAEW) in reducing pathogens on pure cultures and on cotton fabric surfaces in the presence of organic matter and estimate its efficacy in comparison with povidone iodine solution for reducing pathogenic microorganisms on internal surfaces of layer houses. Pure cultures of E.coli, S.enteritidis,...
Fri, 10/23/2015 - 01:52
Abstract The use of edible films could be considered as a good alternative for application of antimicrobial and antioxidant agents in the food industry. In this study, the effect of Adiantum capillus-veneris extract, which has been incorporated into fresh-cut pear starch films, on the microbial growth and antioxidant status of fresh-cut pears was investigated. The films with various extract...
Wed, 10/21/2015 - 15:46
Publication date: Available online 20 October 2015 Author(s): Douglas J. Biedenbach, Francis F. Arhin, Gregory Moeck, Thomas F. Lynch, Daniel F. Sahm Oritavancin is a lipoglycopeptide that has been approved for the treatment of acute bacterial skin and skin-structure infections (ABSSSIs) caused by susceptible organisms. Oritavancin causes cell death by inhibiting cell wall...
Wed, 10/21/2015 - 10:48
Abstract Beer is one of the world's most ancient and widely consumed fermented alcoholic beverages produced with water, malted cereal grains (generally barley and wheat), hops, and yeast. Beer is considered an unfavorable substrate of growth for many microorganisms, however, there are a limited number of bacteria and yeasts, which are capable of growth and may spoil beer especially if it is not...
Mon, 10/19/2015 - 22:55
Abstract AimLittle information is available on a direct comparison of the antibacterial efficacy of LEDs of different peak wavelengths. Thus, the objective of this study was to evaluate the effect of LEDs of three different wavelengths on bacterial inactivation. Methods and ResultsLactobacillus plantarum, Staphylococcus aureus and Vibrio parahaemolyticus were illuminated with 405, 460 and 520 nm...
Mon, 10/19/2015 - 22:36
Abstract AimsProbiotics have been proved to be the most preferred and effective alternative to antibiotics as growth promoter and pathogens inhibitor in poultry industry. In this study Bacillus subtilis CGMCC 1.1086 as a probiotic bacterium was administered in diet and its effects on both the growth performance and the cecal microbiota of broilers were evaluated. Methods and ResultsA total of 240...
Fri, 10/16/2015 - 10:36
We used an in vitro technique to investigate blood volumes required to detect bacteremia and fungemia with low concentrations of an organism. At 1 to 10 CFU/ml, Escherichia coli, Staphylococcus epidermidis, Staphylococcus aureus, Listeria monocytogenes, Candida albicans, and Candida parapsilosis isolates were detected in volumes as low as 0.5 ml. Detection of Streptococcus agalactiae and...
Tue, 10/13/2015 - 10:45
Abstract Chlorine is a principal disinfectant for food and environmental sanitation. Monitoring of free available chlorine (FAC) is essential for ensuring the efficacy of food disinfection processes that rely on chlorine. N,N-diethyl-p-phenylenediamine (DPD) is commonly used for FAC monitoring. However, here we show that upon contact with bovine serum albumin (BSA) or broiler carcasses, chlorite...
Mon, 10/12/2015 - 17:00
Barbara Michiels, Lien Appelen, Barbara Franck, Casper D. J. den Heijer, Stefaan Bartholomeeusen, Samuel Coenen Background The role of general practitioners (GPs) as reservoir and potential source for Staphylococcus aureus (SA) transmission is unknown. Our primary objective was to evaluate the prevalence of SA and community-acquired methicillin resistant SA (CA-MRSA) carrier status (including spa...
Fri, 10/09/2015 - 09:45
Publication date: Available online 9 October 2015 Author(s): V. Manimanna Sankarlal, E.D. Testroet, D.C. Beitz, S. Clark Because residual antibiotics in dried distillers grains with solubles (DDGS) could lead to inadvertent feeding of antibiotics to animals, the objective of our study was to determine if a commercial DDGS contained antibiotics. The DDGS used in a feeding study, and...
Fri, 10/09/2015 - 04:11
Publication date: March 2016 , Volume 61 Author(s): Mitra Mohammadi Bazargani, Jens Rohloff Bacterial biofilms pose health risks in clinical environments, food industry and drinking water systems. Here, we investigated in vitro antibiofilm activities of essential oils (EO) and plant extracts of peppermint (Mentha × piperita L.), coriander (Coriandrum sativum L.), and anise (Pimpinella...
Fri, 10/09/2015 - 04:11
Publication date: March 2016 , Volume 61 Author(s): Haiying Cui, Hui Zhou, Lin Lin The Staphylococcus aureus (S. aureus) biofilm on container is the main source of microbial contamination in milk. In this study, the nanoliposomes encapsulating Salvia oil (SO) has been prepared. Based on the damage effect of pore-forming toxin on cell membrane, α-toxin secreted from S. aureus has been...
Wed, 10/07/2015 - 13:57
Abstract The objective of this study was to evaluate the fate of Staphylococcus aureus, Listeria monocytogenes, and natural microbiota on fresh-cut tropical fruits (pitaya, mango, papaya and pineapple) with commercial PVC film at different storage temperature (5, 13, and 25 °C). The results showed that S. aureus, L. monocytogenes, and natural microbiota increased significantly on fresh-cut...
Fri, 10/02/2015 - 11:12
Colonization of livestock with bacteria resistant to antibiotics is considered a risk for the entry of drug-resistant pathogens into the food chain. For this reason, there is a need for novel concepts to address the eradication of drug-resistant commensals on farms. In the present report, we evaluated the decontamination measures taken on a farm contaminated with methicillin-resistant...
Thu, 10/01/2015 - 01:55
Ricarda Maria Schmithausen, Sophia Veronika Schulze-Geisthoevel, Franziska Stemmer, Mohamed El-Jade, Marion Reif, Sylvia Hack, Alina Meilaender, Gabriele Montabauer, Rolf Fimmers, Marijo Parcina, Achim Hoerauf, Martin Exner, Brigitte Petersen, Gabriele Bierbaum, Isabelle Bekeredjian-Ding Livestock-associated bacteria with resistance to two or more antibiotic drug classes have heightened our...
Thu, 10/01/2015 - 01:55
Publication date: February 2016 , Volume 53, Part B Author(s): J. Stoops, S. Crauwels, M. Waud, J. Claes, B. Lievens, L. Van Campenhout In Western countries, the popularity of edible insects as an alternative animal protein source is increasing. Nevertheless, there is a lack of profound insight into the microbial safety and shelf life of living insects sold for human consumption....
Tue, 09/29/2015 - 01:23
This study investigated the effect of material typespolystyrene, polypropylene, glass, and stainless steel) and glucose addition on Staphylococcus aureus biofilm formation, and the relationship between biofilm formation measured by crystal violet (CV) staining and the number of biofilm cells determined by cell counts was studied. We also evaluated the efficacy of chlorine sanitizer on inhibiting...
Tue, 09/29/2015 - 01:23
The effect of Ziziphora clinopodioides (0.1 and 0.2%) and nisin (250 and 500 IU/g), both separately and in combination, on mesophilic, psychrotrophic and Enterobacteriaceae microorganisms and also on Staphylococcus aureus and Escherichia coli O157:H7 in raw beef patty during storage at refrigerated temperature for 9 days were evaluated. Carvacrol (64.22%), followed by thymol (19.22%), p-cymene (4...
Sun, 09/27/2015 - 01:26
Rice wine is a traditional Chinese fermented alcohol drinkSpontaneous fermentation with the use of the Chinese starter and wheat Qu lead to the growth of various microorganisms during the complete brewing process. It's of great importance to fully understand the composition of bacteria diversity in rice wine in order to improve the quality and solve safety problems. In this study, a more...
Wed, 09/23/2015 - 01:23
Staphylococcal enterotoxins (SEs) produced by Staphylococcus aureus have superantigenic and emetic activities, which cause toxic shock syndrome and staphylococcal food poisoning, respectively. Our previous study demonstrated that the sequence of SET has a low level of similarity to the sequences of other SEs and exhibits atypical bioactivities. Hence, we further explored whether there is an...
Tue, 09/22/2015 - 01:22
Dana Ziuzina, Daniela Boehm, Sonal Patil, P. J. Cullen, Paula Bourke The main objectives of this work were to investigate the effect of atmospheric cold plasma (ACP) against a range of microbial biofilms commonly implicated in foodborne and healthcare associated human infections and against P. aeruginosa quorum sensing (QS)-regulated virulence factors, such as pyocyanin, elastase (Las B) and...
Wed, 09/16/2015 - 01:25
Publication date: October 2015 , Volume 98, Issue 10 Author(s): P. Cremonesi, F. Pozzi, M. Raschetti, G. Bignoli, E. Capra, H.U. Graber, F. Vezzoli, R. Piccinini, B. Bertasi, S. Biffani, B. Castiglioni, M. Luini Staphylococcus aureus is one of the most important causes of mastitis in dairy cattle. Based on previous research, Staph. aureus genotypes with different...
Fri, 09/11/2015 - 01:26
Publication date: Available online 9 September 2015 Author(s): Maged El-Ashker, Mayada Gwida, Herbert Tomaso, Stefan Monecke, Ralf Ehricht, Fatma El-Gohary, Helmut Hotzel The aim of this study was to provide the first detailed insight into the population structure of Staphylococcus aureus in one modern dairy farm (Gamasa) and several household cows and buffaloes in Dakahlia...
Mon, 09/07/2015 - 20:00
Abstract In the present study, active antimicrobial (AM) packaging films were prepared from chitosan (CH) incorporated with ginger (Zingiber officinale) essential oil at different concentrations (0.1, 0.2 and 0.3 % v/v) and characterized. GC-MS analysis revealed zingiberene (22.54 ± 0.13), geranial (12.34 ± 0.33), β-sesquiphellandrene (8.14 ± 0.14), camphene (7.44 ± 0.54) and...
Fri, 09/04/2015 - 01:23
A starter culture composed of Pediococcus pentosaceus, Lactobacillus sakei and Staphylococcus xylosus isolated from Chinese-fermented sausages was used to manufacture fermented sausages. The effects of the starter culture on histamine accumulation, nitrite depletion, lipid oxidation and quality parameters including pH, water activity and total volatile base nitrogen (TVB-N), as well as the color...
Thu, 09/03/2015 - 01:24
About 1.5(v/v) thyme and clove essential oils were added to 1.5% (w/v) sorbitol-amended whey isolate-based film. These films were used for coating traditional semi-hard kashar cheese (traditional Turkish cheese). Escherichia coli O157:H7, Listeria monocytogenes and Staphylococcus aureus microorganisms were selected for the determination of antimicrobial properties of the films by artificial...
Tue, 09/01/2015 - 01:25
Patricia Alba, Fabiola Feltrin, Gessica Cordaro, María Concepción Porrero, Britta Kraushaar, María Angeles Argudín, Suvi Nykäsenoja, Monica Monaco, Marc Stegger, Frank M. Aarestrup, Patrick Butaye, Alessia Franco, Antonio Battisti Methicillin-resistant Staphylococcus aureus (MRSA) Sequence Type (ST)1, Clonal Complex(CC)1, SCCmec V is one of the major Livestock-Associated (LA-) lineages in pig...
Mon, 08/31/2015 - 20:00
Abstract Natural additives for the control of microbial growth are in demand because consumers prefer them over synthetic ones. In the present investigation, the antibacterial activity of two natural preservatives, cinnamaldeyde and clove oil alone or in combinations was studied, and their potential as food preservative in model food systems and watermelon juice was evaluated...
Tue, 08/25/2015 - 03:20
LWT
Publication date: January 2016 Source:LWT - Food Science and Technology, Volume 65 Author(s): Dongying Hu, Haixia Wang, Lijuan Wang Antibacterial property of packaging is needed to improve the microbiological safety of foods. The aim of this work was to incorporate various amounts of carboxymethyl cellulose (CMC) into films based on quaternized chitosan (2- N -Hydroxypropyl-3-...

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