Staphylococcus aureus

Fri, 09/20/2019 - 03:42
Author(s): Dinglong Yang, Yijing Han, Lizhu Chen, Ruiwen Cao, Qing Wang, Zhijun Dong, Hui Liu, Xiaoli Zhang, Qianqian Zhang, Jianmin ZhaoAbstractBactericidal permeability-increasing protein (BPI) is an antimicrobial protein with potent endotoxin-neutralising activity and plays a crucial role in innate immunity against bacterial infection. In the present study, a bpi (designed as rpbpi) was...
Fri, 09/20/2019 - 03:41
Author(s): Angeliki Angelopoulou, Ross Holohan, Mary C. Rea, Alicja K. Warda, Colin Hill, R. Paul RossAbstractBovine mastitis, an inflammation of the udder, is associated with increases in milk somatic cell count usually resulting from bacterial infection. We analysed 50 mastitic milk samples via cultivation, 16S rRNA sequencing and a combination of the two (culturomics) to define the complete...
Fri, 09/20/2019 - 03:40
Author(s): Tanya Clements, Thando Ndlovu, Wesaal KhanAbstractThe genus Serratia is a predominantly unexplored source of antimicrobial secondary metabolites. The aim of the current study was thus to isolate and evaluate the antimicrobial properties of biosurfactants produced by Serratia species. Forty-nine (n = 34 pigmented; n = 15 non-pigmented) biosurfactant producing Serratia strains were...
Fri, 09/20/2019 - 03:39
Author(s): Sirlei G. Marques, Maria Rosa Q. Bomfim, Conceição de Maria P.S. Azevedo, Cleide Viviane B. Martins, Ana Claudia G. Marques, Azizedite G. Gonçalves, Vania A. Vicente, Alcione M. dos Santos, Marliete C. Costa, Gustavo J.C. Freitas, Daniel A. Santos, Maria A. de Resende-StoianoffAbstractChromoblastomycosis (CBM) is a chronic subcutaneous infection caused by melanotic fungi, affecting...
Wed, 09/18/2019 - 01:03
Available online 16 September 2019 Author(s): Da-young Jeon, Su-jin Yum, Dong Woo Seo, Seung Min Kim, Hee Gon JeongAbstractPerilla (Perilla frutescens) is a commonly consumed herb with various health benefits in Asia. However, the risks of food-borne illness owing to the presence of pathogens on perilla leaves have not been evaluated. In this study, we evaluated the microbiota of perilla leaves...
Mon, 09/16/2019 - 00:00
Abstract Spices are primarily used as flavor enhancers and have attracted attention as natural food preservatives since their antimicrobial effects were determined. In the present study, the antimicrobial effects, minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) values on 5 important food-borne pathogenic bacteria were investigated in 20...
Sat, 09/14/2019 - 01:03
LWT
Publication date: January 2020Source: LWT, Volume 117Author(s): Li-Wah Wong, Chih-Yao Hou, Chun-Chi Hsieh, Chao-Kai Chang, Yi-Shan Wu, Chang-Wei HsiehAbstractThis research is mainly focused on preparing gallic acid (GA) coated, antimicrobial, active packaging, low density polyethylene (LDPE) films by capacitively coupled plasma. Firstly, the suitable plasma treatment condition was 30 W treated...
Thu, 09/12/2019 - 01:03
Available online 10 September 2019 Author(s): Meina Zhang, Yanyi Che, Shuang Zhao, Xia Xiaojing, Hongtao Liu, Jianfang Liu, Yuping Wang, Wenyu Han, Yuying Yang, Changhai Zhou, Liancheng LeiAbstractMastitis is a disease that affects dairy cattle and causes a decline in milk quality as well as economic loss worldwide. TGF-β1 levels are usually increased during mastitis; however, it is unknown...
Wed, 09/11/2019 - 00:00
Abstract Probiotics are important bacteria due to their benefit on human health. In this study, four strains of lactic acid bacteria from chicken bile were isolated and the strain with the best antimicrobial activity was selected for further identification and evaluation on its probiotic traits and safety. The strain was identified as Enterococcus faecium by biochemical...
Sun, 09/08/2019 - 01:03
Available online 7 September 2019 Author(s): L. Irène I. Ouoba, Alain Brice Vouidibio-Mbozo, Amarachukwu Anyogu, Promiselynda I. Obioha, Hagrétou Lingani-Sawadogo, Jane P. Sutherland, Lene Jespersen, Hamid B. GhoddusiAbstractDifferent samples of three products including Bikalga and Soumbala from Burkina Faso (West Africa) and Ntoba Mbodi from Congo-Brazzaville (Central Africa) were evaluated. The...
Sat, 09/07/2019 - 01:05
LWT
Publication date: December 2019Source: LWT, Volume 116Author(s): Taskeen Niaz, Saima Shabbir, Tayyaba Noor, Muhammad ImranAbstractSynthetic lipid membranes are considered as promising food-grade nano vesicles (NVs), but their functionalization is required to empower them as active-nano vesicle systems. In this study, rhamnosomes (RS) were developed by engineering the membrane of nano-liposomes...
Fri, 09/06/2019 - 01:05
Available online 4 September 2019 Author(s): Shimo Kang, Fanhua Kong, Xinyang Shi, Hongjiao Han, Mohan Li, Boyuan Guan, Mei Yang, Xueyan Cao, Dongbing Tao, Yan Zheng, Xiqing YueAbstractLactobionic acid (LBA), a polyhydroxy organic acid, is supposed to be a promising candidate for use as multifunctional food additive due to its ability of antibacterial, anti-obesity, etc. The antibacterial...
Fri, 09/06/2019 - 01:05
Available online 4 September 2019 Author(s): Hao Yu, Sun BoAbstractThis study was carried out to investigate the changes of bacterial diversity during the fermentation of farmhouse sauce from Northeast China. A total of 16 phyla, 37 classes, 56 orders, 96 families, 139 genera, and 81 species, were identified using high-throughput sequencing. The bacterial diversity and species evenness of the...
Thu, 09/05/2019 - 01:05
LWT
Publication date: December 2019Source: LWT, Volume 116Author(s): Saerom Lee, Misook KimAbstractHere, the multi-functional properties of Leuconostoc mesenteroides MKSR (MKSR), newly isolated from the Korean fermented vegetable product, kimchi, were evaluated. The survival rate of MKSR was 98% in 0.1% pepsin solution (pH 2.0) after 3 h, and 93% in 0.1% bile salt solution after 4 h. MKSR possessed...
Mon, 09/02/2019 - 05:45
Abstract The mechanisms of inactivation against Gram‐negative bacteria (GNB) including Pseudomonas aeruginosa, Escherichia coli, and Vibrio parahaemolyticus, and Gram‐positive bacteria (GPB) involving Listeria monocytogenes and Staphylococcus aureus, by dielectric barrier discharge cold atmospheric plasma were elucidated. Both GNB and GPB were exposed to treatment with cold plasma produced from...
Fri, 08/30/2019 - 08:33
Abstract The antibacterial activity and the mechanism of Tetrapleura tetraptera root extract against Escherichia coli and Staphylococcus aureus were investigated. The mechanism of action of T. tetraptera on tested bacterial species was predominantly characterized by the study of transmission electron microscopy, which revealed severe damage on the primary target which affected the cell integrity...
Fri, 08/30/2019 - 00:00
Monitoring Staphylococcus aureus with high sensitivity is very important for ensuring milk quality and food safety. In this study, we used a rapid nucleic acid isothermal amplification method, saltatory rolling circle amplification (SRCA), for the detection of Staph. aureus in milk. The results of the SRCA method can be assessed visually by the presence of white precipitate or by fluorescence...
Wed, 08/28/2019 - 01:04
Available online 26 August 2019 Author(s): Denes K.A. Rosario, Yago A.A. Bernardo, Yhan S. Mutz, Brijesh Tiwari, Andreja Rajkovic, Patricia C. Bernardes, Carlos A. Conte-JuniorAbstractUltrasound (US) has a high capacity to increase food safety. Although high and/or moderate temperature in combination with US has been studied, the knowledge about cooling/low temperatures as well as its combined...
Wed, 08/28/2019 - 00:00
Toxins, Vol. 11, Pages 500: Distribution of Toxinogenic Methicillin-Resistant and Methicillin-Susceptible Staphylococcus aureus from Different Ecological Niches in Algeria Toxins doi: 10.3390/toxins11090500 Authors: Assia Mairi Abdelaziz Touati Alix Pantel Karima Zenati Alex Yahiaoui Martinez Catherine Dunyach-Remy Albert Sotto Jean-Philippe Lavigne The diffusion of Panton...
Fri, 08/23/2019 - 01:03
Available online 21 August 2019 Author(s): Lihui Zhang, Lixia Hou, Shuang Zhang, Xiaoxi Kou, Rui Li, Shaojin WangAbstractWater activity (aw) and heating rates are two major factors altering heat resistance of food-borne pathogens. The specific mechanism of heat resistance triggered by these two factors is still unclear. In this study, S. aureus ATCC 25923 was inoculated in walnut shells with two...
Fri, 08/23/2019 - 01:03
LWT
Publication date: Available online 22 August 2019Source: LWTAuthor(s): Shunmugavel Uma Maheshwari, Sundarajan Amutha, Rangasamy Anandham, Ganapathyswamy Hemalatha, Natesan Senthil, Soon Woo Kwon, Natesan SivakumarAbstract:Panchamirtham is a fermented fruit mix made from natural fermentation of fruits (banana, brown sugar, seedless dates, sugar candy, honey, cardamom and ghee), which offers...
Thu, 08/22/2019 - 01:03
Available online 16 August 2019 Author(s): María Isabel Rodríguez-López, María Teresa Mercader-Ros, José Antonio Pellicer, Vicente M. Gómez-López, Domingo Martínez-Romero, Estrella Núñez-Delicado, José A. GabaldónAbstractMonoterpenes have antimicrobial properties but are associated with strong smells and flavors that limit their use in foods; therefore, strategies to keep their effectivity using...
Wed, 08/21/2019 - 08:32
Abstract In this study, silver (Ag), zinc oxide (ZnO), and copper oxide (CuO) metallic nanoparticles were used in preparation of carboxymethyl cellulose (CMC) nanobiocomposite films. Scanning electron microscopy (SEM), X‐ray diffraction (EDXA), water vapor permeability (WVP), ultraviolet and visible light (UV–Vis) spectroscopy, and mechanical and microbial tests were used to determine the...
Wed, 08/21/2019 - 08:22
Abstract This investigation we evaluated the feasibility of using the insulated isothermal polymerase chain reaction (iiPCR) reagent in a POCKIT system to detect Staphylococcus aureus in foods by comparing its results with those obtained using quantitative PCR (qPCR). The iiPCR/POCKIT system could specifically detect S. aureus and Staphylococcus spp. and differentiate them from 10 other...
Mon, 08/19/2019 - 11:10
Staphylococcus aureus has evolved a complex regulatory network that controls a multitude of defense mechanisms against the deleterious effects of oxidative stress stimuli subsequently leading to the pathogen's survival and persistence in the hosts. Previously, we characterized the msaABCR operon as a regulator of virulence, antibiotic resistance, and the formation of persister cells in S. aureus...
Mon, 08/19/2019 - 01:05
Publication date: January 2020 , Volume 107Author(s): Angelo Colagiorgi, Rossella Festa, Pierluigi A. Di Ciccio, Marta Gogliettino, Marco Balestrieri, Gianna Palmieri, Aniello Anastasio, Adriana IanieriAbstractStaphylococcal food poisoning – caused by certain enterotoxigenic staphylococci – is one of the most common worldwide foodborne diseases. In this context, bacterial biofilms on food...
Sat, 08/17/2019 - 01:08
Publication date: Available online 15 August 2019 Innovative Food Science & Emerging TechnologiesAuthor(s): Hiba N. Rajha, Anna-Maria Abi Khattar, Sally El Kantar, Nadia Boussetta, Nikolai Lebovka, Richard G. Maroun, Nicolas Louka, Eugene VorobievAbstractThe effects of aqueous extraction of bioactive compounds from pomegranate peels using conventional extraction (CE) and extraction assisted...
Sat, 08/17/2019 - 00:00
Abstract This study was performed to determine quality changes of battered and breaded pre-fried snack product developed from large sized (5.5–10.5 kg) Catla (Catla catla) fish stored at chilled temperature (− 2 to − 4 °C). Quality changes were assessed based on biochemical, microbiological and sensory quality evaluation at 2 days interval for a period of 18 days. Results of...
Fri, 08/16/2019 - 08:32
Abstract We investigated the prevalence of Hepatitis E Virus (HEV), Leptospira and Ascaris suum (A. suum) seropositivity, and of nasal methicillin‐resistant Staphylococcus aureus (MRSA) colonization among Austrian practising veterinarians, and assessed the association with occupational swine livestock exposure. The 261 participants completed a questionnaire on demographics, intensity of...
Thu, 08/15/2019 - 15:43
In the current study, some physicochemical, mechanical, thermal, structural, and antibacterial properties of hydroxypropyl methyl cellulose–whey protein concentrate (HPMC–WPC) film loaded with chitosan nanoparticles (CNPs) are scrutinized. Initially, the optimal ratio of HPMC:WPC (70:30) was screened, then CNPs loaded into the HPMC:WPC blend film at the levels of 1%–5%. Well compatibility of the...
Wed, 08/14/2019 - 03:00
Journal of Food Protection, Volume 82, Issue 9, Page 1496-1500, September 2019.
Wed, 08/14/2019 - 01:05
LWT
Publication date: Available online 12 August 2019Source: LWTAuthor(s): Mahmut Kilicli, Mehmet Baslar, M. Zeki Durak, Osman SagdicAbstractIn this study, we aimed to use ultrasound and low-intensity electrical current practices to make lettuce safer for human health. For this purpose, three electric currents (0.2, 0.8, and 1.4 mA) and two ultrasonic processes (24 and 40 kHz), used both separately...
Wed, 08/14/2019 - 01:05
LWT
Publication date: Available online 12 August 2019Source: LWTAuthor(s): Saritha Gopal Pandit, Krishna-Prashanth Ramesh Mekala, Mohankumari H. Puttananjaiah, Mohan Appasaheb DhaleAbstractFungus producing red pigment was identified as Talaromyces purpureogenus CFRM02. Agriculture by-product, bengal gram husk (BegH) was used as substrate for fermentation. Red pigment characteristics were confirmed by...
Wed, 08/14/2019 - 00:00
The aims of this study were to determine whether non-aureus staphylococci (NAS) are present in rectal feces of healthy dairy cows, and if so, to delineate species to which they belong and to study several phenotypic and genotypic traits as a first step toward determining the potential impact of fecal shedding of NAS on bovine udder health. Fecal samples were aseptically collected from the rectum...
Thu, 08/08/2019 - 01:03
Available online 6 August 2019 Author(s): Gabriela Nogueira Viçosa, Clarisse Vieira Botelho, Cristian Botta, Marta Bertolino, Antônio Fernandes de Carvalho, Luís Augusto Nero, Luca CocolinAbstractBiocontrol of Staphylococcus aureus by lactic acid bacteria can be considered as a feasible alternative to the use of chemicals in foods, but the mechanisms underlying this antagonistic interaction...
Wed, 08/07/2019 - 05:22
Abstract Aims We developed a strategy for localized delivery of the LFCA (lactoferricinlactoferrampin), which is actively synthesized in situ by Lactococcus lactis (pAMJ399‐LFCA/LLMG1363), and explored the possibility of using pAMJ399‐LFCA/LLMG1363 as an alternative additive diet to antibiotics. Methods and Results The antimicrobial activities of the LFCA derived from pAMJ399‐LFCA/LLMG1363...
Tue, 08/06/2019 - 13:29
Abstract Aims This work aimed to evaluate the antimicrobial activity of pure (ZnO) and doped (ZnMgO) zinc oxide nanoparticles on bacterial pathogens and Saccharomyces cerevisiae to confirm their applicability as an alternative to antibiotics and to estimate their biocompatibility. Methods and Results Microbial growth inhibition on agar plates, microbial viability and adaptation tests in broth...
Sun, 08/04/2019 - 20:00
The emergence of vancomycin-resistant Staphylococcus aureus (VRSA) represents a challenge for the treatment of staphylococcal infections in both human and animals worldwide. Although VRSA has been detected in sev...
Fri, 08/02/2019 - 01:03
LWT
Publication date: Available online 31 July 2019Source: LWTAuthor(s): Halil Ibrahim Kaya, Omer SimsekAbstractBacteriocins are the most important natural preservatives against pathogens, but their limited spectrum could not fully ensure food safety. In this study, bacteriocin producers showing specific-antimicrobial activity to foodborne pathogens were isolated and the success of the cocktail of...
Thu, 08/01/2019 - 15:53
Abstract Essential oils (EOs) have long been recognized for their medicinal properties. Application of EOs in food preservation has gained recent interest as natural alternatives to conventional chemicals. Even though the properties of EOs are extensively documented, their effect on several food‐related microorganisms is yet to be explored. In this study, six EOs were extracted by...
Thu, 08/01/2019 - 12:18
Abstract Aim The molecular typing and the susceptibility of Staphylococcus aureus strains of swine origin to antibiotics, oregano (Origanum vulgare L.) essential oil (EO) and Chilean blackberry maqui (Aristotelia chilensis (Molina) Stuntz) extract were determined. Methods and Results Twenty S. aureus strains of swine origin were subjected to molecular typing, of which six strains were selected...
Thu, 08/01/2019 - 01:04
Available online 23 July 2019 Author(s): Luís Palmeira, Carla Pereira, Maria Inês Dias, Rui M.V. Abreu, Rúbia C.G. Corrêa, Tânia C.S.P. Pires, Maria José Alves, Lillian Barros, Isabel C.F.R. FerreiraAbstractThis study aims to give an unprecedented contribution on the chemical composition and bioactivities of the most produced and appreciated Portuguese fig variety (“Pingo de Mel”) with the view...
Thu, 08/01/2019 - 01:04
LWT
Publication date: Available online 30 July 2019Source: LWTAuthor(s): Juliana A.S. Leite, Aurea M.A. Migotto, Mariza Landgraf, Virginia S. Quintal, Jorge A.W. Gut, Carmen C. TadiniAbstractThe main objective of this work was to verify the efficiency of batch microwave-assisted heating for donor human milk and assess the activity of alkaline phosphatase (ALP) and microbiological quality. Processing...
Wed, 07/31/2019 - 01:03
LWT
Publication date: Available online 29 July 2019Source: LWTAuthor(s): Alex Tsun Yin Lau, Shai Barbut, Kelly Ross, Moussa Sory Diarra, S. BalamuruganAbstractThe effect of cranberry pomace extract (CE), on the growth of commonly used meat fermentation starter cultures, and selected foodborne pathogens were studied. Ten meat starter culture strains, belonging to genus Lactobacillus, Pediococcus, and...
Mon, 07/29/2019 - 12:53
Abstract Aims This study was conducted to determine the occurrence of staphylococci from cows with subclinical mastitis from independent herds in Algeria, and to characterize Staphylococcus aureus isolates. Methods and Results Quarter milk samples were collected separately, somatic cells were counted and samples with more than 200 000 somatic cells/mL were cultured on blood agar. Staphylococci...
Mon, 07/29/2019 - 06:29
Abstract Staphylococcus epidermidis and Staphylococcus aureus, two bacterial strains commonly associated with biofilm‐related medical infections and food poisoning, can rapidly colonize biotic and abiotic surfaces. The present study investigates the ability of anodic alumina surfaces with nanoporous surface topography to minimize the attachment and biofilm formation mediated by these pathogenic...
Sat, 07/27/2019 - 01:03
Publication date: 1 December 2019 , Volume 300Author(s): Jiefeng Pan, Fangmi Ai, Ping Shao, Hangjun Chen, Haiyan GaoAbstractUnder the optimal conditions, a crosslinked electrospun polyvinyl alcohol/cinnamon essential oil/β-cyclodextrin (CPVA-CEO-β-CD) nanofibrous films for sustained release of antimicrobials were successfully prepared. Cinnamon essential oil (CEO) can be sustainably released due...
Fri, 07/26/2019 - 01:05
Available online 24 July 2019 Author(s): David J. Sullivan, Shafrina Azlin-Hasim, Malco Cruz-Romero, Enda Cummins, Joseph P. Kerry, Michael A. MorrisAbstractThe objective of this study was to evaluate the antimicrobial effects of benzoic and sorbic acid salt and their nano-solubilisates against planktonic and biofilm cultures of Staphylococcus aureus, Pseudomonas fluorescens and chicken...

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