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https://www.readbyqxmd.com/read/29433218/application-of-high-throughput-pyrosequencing-in-the-analysis-of-microbiota-of-food-commodities-procured-from-small-and-large-retail-outlets-in-a-u-s-metropolitan-area-a-pilot-study
#1
Daleniece Higgins, Chandan Pal, Irshad M Sulaiman, Chunrong Jia, Tyler Zerwekh, Scot E Dowd, Pratik Banerjee
With the advent of high-throughput sequencing technologies, it is possible to comprehensively analyze the microbial community of foods without culturing them in the laboratory. The estimation of all microbes inhabiting a food commodity (food microbiota) therefore may shed light on the microbial quality and safety of foods. In this study, we utilized high-throughput pyrosequencing of 16S rRNA genes as well as traditional microbiological methods to evaluate the bacterial diversity and the predicted metabolic pathways associated with the bacterial communities of selected foods (romaine lettuce, cabbage, deli meat, and chicken legs, total 200 samples) procured from small and large retail outlets located in Memphis-Shelby County, Tennessee, USA...
March 2018: Food Research International
https://www.readbyqxmd.com/read/29433211/effects-of-cooking-and-food-matrix-on-estimated-mineral-bioavailability-in-mloukhiya-a-mediterranean-dish-based-on-jute-leaves-and-meat
#2
Sondos Njoumi, Sihem Bellagha, Christèle Icard-Vernière, Christian Picq, Marie Josèphe Amiot, Claire Mouquet-Rivier
Traditional Mediterranean plant-based dishes could allow tackling malnutrition while preserving the cultural heritage. To determine the effect of the cooking method on mineral bioavailability, the content in minerals and chelators of Mloukhiya, a Mediterranean dish based on jute leaves (Corchorus olitorius) that contains also meat, was monitored during the whole cooking process. Mineral bioaccessibility was assessed by measuring in vitro dialyzability. Model equation was also used to estimate mineral bioavailability...
March 2018: Food Research International
https://www.readbyqxmd.com/read/29429850/the-first-report-of-human-meningitis-and-pyogenic-ventriculitis-caused-by-streptococcus-suis-a-case-report
#3
Tomonobu Yanase, Daiichi Morii, Satoshi Kamio, Ayako Nishimura, Eri Fukao, Yuri Inose, Yutaka Honma, Nobuo Kitahara, Takayuki Yokozawa, Bin Chang, Toshimi Oda
Streptococcus suis, a gram-positive facultative anaerobe commonly found in pigs, is an emerging zoonotic pathogen. Herein, we describe a case of a 45-year-old male Japanese meat wholesaler with S. suis meningitis and pyogenic ventriculitis. S. suis was isolated from his blood and cerebrospinal fluid culture, and sequence type (ST) and serotype were confirmed to be ST1 and serotype 2, respectively, by multilocus sequence typing and the Quellung reaction. Magnetic resonance imaging (MRI) revealed right labyrinthitis and pyogenic ventriculitis...
February 8, 2018: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/29419881/an-adapted-isolation-procedure-reveals-photobacterium-spp-as-common-spoilers-on-modified-atmosphere-packaged-meats
#4
Maik Hilgarth, Sandra Fuertes-Pèrez, Matthias Ehrmann, Rudi F Vogel
The genus Photobacterium comprises species of marine bacteria, commonly found in open-ocean and deep-sea environments. Some species (e.g. Photobacterium phosphoreum) are associated with fish spoilage. Recently, culture-independent studies have drawn attention to the presence of photobacteria on meat. This study employed a comparative isolation approach of Photobacterium spp. and aimed to develop an adapted isolation procedure for recovery from food samples, as demonstrated for different meats: Marine broth is used for resuspending and dilution of food samples, and cultivation on marine broth agar supplemented with meat extract and vancomycin at 15 °C for 72 hours...
February 8, 2018: Letters in Applied Microbiology
https://www.readbyqxmd.com/read/29419335/differential-effect-of-food-sanitizers-on-formation-of-viable-but-nonculturable-salmonella-enterica-in-poultry
#5
Laura Purevdorj-Gage, Brian Nixon, Kyle Bodine, Qilong Xu, William T Doerrler
A method for microscopic enumeration of viable Salmonella enterica in meat samples was developed by using the LIVE/DEAD BacLight kit technology. A two-step centrifugation and wash process was developed to clean the samples from food and chemical impurities that might otherwise interfere with the appropriate staining reactions. The accuracy of the BacLight kit-based viability assessments was confirmed with various validation tests that were conducted by following the manufacturer's instructions. For the biocide challenge tests, chicken parts each bearing around 8...
February 8, 2018: Journal of Food Protection
https://www.readbyqxmd.com/read/29408373/selective-dopaminergic-neurotoxicity-of-three-heterocyclic-amine-subclasses-in-primary-rat-midbrain-neurons
#6
Angela Cruz-Hernandez, Zeynep Sena Agim, Paola C Montenegro, George P McCabe, Jean-Christophe Rochet, Jason R Cannon
Heterocyclic amines (HCAs) are primarily produced during high temperature meat cooking. These compounds have been intensively investigated as mutagens and carcinogens. However, converging data suggest that HCAs may also be neurotoxic and potentially relevant to neurodegenerative diseases such as Parkinson's disease (PD). The identification of new potential etiological factors is important because most PD cases are sporadic. Our group previously showed that 2-amino-1-methyl-6-phenylimidazo[4,5-b]pyridine (PhIP) was selectively neurotoxic to dopaminergic neurons...
February 2, 2018: Neurotoxicology
https://www.readbyqxmd.com/read/29402899/comparison-of-environmental-impact-and-nutritional-quality-among-a-european-sample-population-findings-from-the-food4me-study
#7
Christie Walker, Eileen R Gibney, Stefanie Hellweg
This study evaluates the relationship between environmental impacts and diet quality through several environmental and nutritional indicators, using data from over 1400 participants across seven European countries in the Food4Me study. Comparisons of environmental impacts and dietary quality were evaluated across country, gender groups, and dietary patterns. While there was clear variability within the different subsets, there were large differences observed in both dietary quality and environmental impacts between cultures, genders, and dietary patterns...
February 5, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29390965/breed-dependent-microrna-expression-in-the-primary-culture-of-skeletal-muscle-cells-subjected-to-myogenic-differentiation
#8
Tomasz Sadkowski, Anna Ciecierska, Jolanta Oprządek, Edyta Balcerek
BACKGROUND: Skeletal muscle in livestock develops into meat, an important source of protein and other nutrients for human consumption. The muscle is largely composed of a fixed number of multinucleated myofibers determined during late gestation and remains constant postnatally. A population of postnatal muscle stem cells, called satellite cells, gives rise to myoblast cells that can fuse with the existing myofibers, thus increasing their size. This requires a delicate balance of transcription and growth factors and specific microRNA (miRNA) expressed by satellite cells and their supporting cells from the muscle stem cell niche...
January 31, 2018: BMC Genomics
https://www.readbyqxmd.com/read/29389634/biocontrol-strategies-for-mediterranean-style-fermented-sausages
#9
REVIEW
Márcia Oliveira, Vânia Ferreira, Rui Magalhães, Paula Teixeira
Naturally fermented meat sausages have a long tradition in Mediterranean countries and are one of the most important groups of traditional foods consumed throughout Europe. Despite all the advances in food science and technology and increased regulatory requirements and concerns for safety and quality during the last decades, the challenge to control important foodborne pathogens in this type of meat products still persists. Simultaneously, growing consumer interest in safe, high quality and minimal processed products, with less additives/preservatives have driven the food industry and scientists in a crusade for innovative technologies to maintain the safety of these products by natural means...
January 2018: Food Research International
https://www.readbyqxmd.com/read/29389632/evaluation-of-spoilage-potential-and-volatile-metabolites-production-by-shewanella-baltica-isolated-from-modified-atmosphere-packaged-live-mussels
#10
Olumide A Odeyemi, Christopher M Burke, Christopher J S Bolch, Roger Stanley
Under the current commercial practice, live mussels only have 10days' shelf-life. Observed spoilage indices reduce consumers' acceptance, palatability and shelf-life of modified atmosphere packaged (MAP) live mussels. The aims of this study are to isolate specific spoilage bacteria from modified atmosphere packaged live mussels, evaluate isolates for microbial spoilage indices using qualitative methods and volatile metabolites production. Forty-six hydrogen sulphide producing bacteria were isolated and evaluated for trimethylamine n-oxide (TMAO) reduction, proteolytic and lipolytic activities and hydrogen sulphide production...
January 2018: Food Research International
https://www.readbyqxmd.com/read/29389589/designing-a-biochip-following-multiplex-polymerase-chain-reaction-for-the-detection-of-salmonella-serovars-typhimurium-enteritidis-infantis-hadar-and-virchow-in-poultry-products
#11
Yu-Cheng Chiang, Hsien-Huang Wang, Latha Ramireddy, Hsin-Yen Chen, Chia-Ming Shih, Chien-Ku Lin, Hau-Yang Tsen
Salmonella-contaminated foods, especially poultry-derived foods (eggs, chicken meat), are the major source of salmonellosis. Not only in the European Union (EU), but also in the United States, Japan, and other countries, has salmonellosis been an issue of concern for food safety control agencies. In 2005, EU regulation 1003/2005 set a target for the control and reduction of five target Salmonella enterica serovars-S. Typhimurium, S. Enteritidis, S. Infantis, S. Hadar, and S. Virchow-in breeding flocks. Thus, a simple biochip for the rapid detection of any of these five Salmonella serovars in poultry products may be required...
January 2018: Journal of Food and Drug Analysis
https://www.readbyqxmd.com/read/29377719/prevalence-and-antibiotic-resistance-profiles-of-campylobacter-jejuni-isolated-from-poultry-meat-and-related-samples-at-retail-shops-in-northern-india
#12
Javed Ahamad Khan, Ram Swaroop Rathore, Hussein Hasan Abulreesh, Faizan Abul Qais, Iqbal Ahmad
Campylobacteriosis is the common gastrointestinal disease worldwide. However, in many parts of the world, including India, the impact of campylobacteriosis is less commonly investigated. This study aimed to determine the prevalence and antibiotic susceptibility profiles of Campylobacter jejuni in raw poultry meat and poultry-related samples at retail shops in a region of Northern India. A total of 400 samples of chicken meat (150), chicken intestine (150), feathers (50), and chopping boards and knives (50) samples were screened for the presence of C...
January 29, 2018: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/29374521/microrna-200a-regulates-adipocyte-differentiation-in-the-domestic-yak-bos-grunniens
#13
Yongfeng Zhang, Xiaoyun Wu, Chunnian Liang, Pengjia Bao, Xuezhi Ding, Min Chu, Congjun Jia, Xian Guo, Ping Yan
The domestic yak (Bos grunniens) is a culturally important animal that lives at high altitude and is farmed by Tibetan herders for its meat, milk, and other animal by-products. Within the animal, adipose tissue is an important store and source of energy and is used to maintain adequate body temperature during the extended cold seasons. Exploring the biomolecular role of microRNAs (miRNAs) in the regulation of growth, development, and metabolism of yak adipocytes may provide valuable insights into the physiology of adipogenesis in the yak...
January 24, 2018: Gene
https://www.readbyqxmd.com/read/29364698/prevalence-and-characterization-of-staphylococcus-aureus-strains-in-the-pork-chain-supply-in-chile
#14
Valeria Velasco, José L Vergara, Ana M Bonilla, Javier Muñoz, Alejandra Mallea, Diego Vallejos, Mario Quezada-Aguiluz, Jorge Campos, Pedro Rojas-García
The detection of methicillin-resistant Staphylococcus aureus (MRSA) and other emerging strains in meat-producing animals and retail meat has increased the risk of contamination of food. The aim of this study was to determine the prevalence and characterize S. aureus strains isolated from the pork chain supply in Chile. A total of 487 samples were collected: 332 samples from pigs at farms and slaughterhouses (nasal, n = 155; skin, n = 177); 85 samples from carcasses at slaughterhouses; and 70 meat samples at supermarkets and retail stores...
January 24, 2018: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/29361210/preparation-and-antioxidant-activities-in-vitro-of-designed-antioxidant-peptide-from-pinctada-fucata-by-recombinant-escherichia-coli
#15
Yanyan Wu, Yongkai Ma, Laihao Li, Xianqing Yang
An antioxidant peptide derived from Pinctada fucata meat using an Alcalase2.4L enzymatic hydrolysis method (named AOP) and identified by LC-TOF-MS has promising clinical potential for generating cosmetic products that protect skin from sunshine. To date, there have been few published studies investigating the structure-activity relationship in these peptides. To prepare antioxidant peptides better and improve their stability, the design and expression of an antioxidant peptide from Pinctada fucata (named DSAOP) was studied...
January 24, 2018: Journal of Microbiology and Biotechnology
https://www.readbyqxmd.com/read/29359654/evaluating-the-potential-of-oleaginous-yeasts-as-feedstock-for-biodiesel-production
#16
Hamid Mukhtar, Syed M Suliman, Aroosh Shabbir, Muhammad W Mumtaz, Umer Rashid, Sawsan A Rahimuddin
Fifty yeast strains were isolated from soil and eleven of them were selected for oil production. Five yeast strains were designated as oleaginous because they produced more than 16% of oil based on their biomass. The isolate IIB-10 identified as Yarrowia lipolytica produced maximum amount of lipids i.e. 22.8%. More amount of biomass was obtained when cane molasses was utilized as carbon source where it produced 29.4 g/L of biomass while sucrose and lactose were not utilized by IIB-10 and no biomass was obtained...
January 21, 2018: Protein and Peptide Letters
https://www.readbyqxmd.com/read/29349489/characterization-of-multiple-antilisterial-peptides-produced-by-sakacin-p-producing-lactobacillus-sakei-subsp-sakei-2a
#17
Kátia G Carvalho, Felipe H S Bambirra, Jacques R Nicoli, Jamil S Oliveira, Alexandre M C Santos, Marcelo P Bemquerer, Antonio Miranda, Bernadette D G M Franco
Antimicrobial compounds produced by lactic acid bacteria can be explored as natural food biopreservatives. In a previous report, the main antimicrobial compounds produced by the Brazilian meat isolate Lactobacillus sakei subsp. sakei 2a, i.e., bacteriocin sakacin P and two ribosomal peptides (P2 and P3) active against Listeria monocytogenes, were described. In this study, we report the spectrum of activity, molecular mass, structural identity and mechanism of action of additional six antilisterial peptides produced by Lb...
January 18, 2018: Archives of Microbiology
https://www.readbyqxmd.com/read/29333059/innate-food-aversions-and-culturally-transmitted-food-taboos-in-pregnant-women-in-rural-southwest-india-separate-systems-to-protect-the-fetus
#18
Caitlyn D Placek, Purnima Madhivanan, Edward H Hagen
Pregnancy increases women's nutritional requirements, yet causes aversions to nutritious foods. Most societies further restrict pregnant women's diet with food taboos. Pregnancy food aversions are theorized to protect mothers and fetuses from teratogens and pathogens or increase dietary diversity in response to resource scarcity. Tests of these hypotheses have had mixed results, perhaps because many studies are in Westernized populations with reliable access to food and low exposure to pathogens. If pregnancy food aversions are adaptations, however, then they likely evolved in environments with uncertain access to food and high exposure to pathogens...
November 2017: Evolution and Human Behavior: Official Journal of the Human Behavior and Evolution Society
https://www.readbyqxmd.com/read/29329084/sources-of-polychlorinated-dibenzo-p-dioxins-and-dibenzofurans-and-biphenyls-in-chinese-mitten-crabs
#19
Ying Han, Wenbin Liu, Wen Zhu, Kaifeng Rao, Ke Xiao, Lirong Gao, Guijin Su, Guorui Liu
Polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) and polychlorinated biphenyls (PCBs) in Chinese mitten crabs from several areas were determined. The toxic equivalents (TEQs) for the mean PCDD/F and total PCDD/F and dioxin-like PCBs were 2.9 ± 2.7 and 5.7 ± 4.0 pg TEQ g-1, respectively. The mean concentrations of PCBs and dl-PCBs were 282 and 59 times the concentrations of PCDD/Fs, respectively. PCDD/F and PCB sources in the crab food web were assessed. The total TEQ of PCDD/F and PCB supplied by crab compound feed was 2...
January 6, 2018: Chemosphere
https://www.readbyqxmd.com/read/29315008/clostridium-perfringens-contamination-in-retail-meat-and-meat-based-products-in-bursa-turkey
#20
Artun Yibar, Ece Cetin, Zafer Ata, Evren Erkose, Mustafa Tayar
This study examined the incidence of Clostridium perfringens in raw, ready-to-cook (RTC), and ready-to-eat (RTE) meat and meat-based products (N = 306) collected from restaurants, supermarkets, and butcher shops in Bursa, Turkey. In addition, we investigated the presence of the C. perfringens enterotoxin (CPE), as well as cpe genes and their source (chromosomal or plasmid borne). In this study, tryptose sulfite cycloserine (TSC) agar for classic culture isolation and API and real-time polymerase chain reaction (RT-PCR) techniques were used to identify C...
January 9, 2018: Foodborne Pathogens and Disease
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