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https://www.readbyqxmd.com/read/28092912/production-and-rheological-properties-of-welan-gum-produced-by-sphingomonas-sp-atcc-31555-with-different-nitrogen-sources
#1
Xiaopeng Xu, Zuoming Nie, Zhiyong Zheng, Li Zhu, Xiaobei Zhan
This study aimed to investigate the effect of nitrogen sources on the production and rheological properties of welan gum produced by Sphingomonas sp. ATCC 31555. Six different nitrogen sources were used for ATCC 31555 fermentation, and 2 of these were further analyzed due to their more positive influence on welan gum production and bacterial biomass. Bacterial biomass, welan gum yield, welan viscosity, molecular weight, monosaccharide composition, acyl content, and welan structure were analyzed. Welan gum production and the biomass concentration of ATCC 31555 were higher in media containing NaNO3 and beef extract...
January 17, 2017: Journal of Molecular Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28088036/an-emotional-approach-to-beef-evaluation
#2
Monica Borgogno, Armand V Cardello, Saida Favotto, Edi Piasentier
The emotions associated with beef consumption, the influence of breeding system information on emotions ("Conventional" - C vs "Only from the Italian Simmental" - OIS label) and their relationship with liking were evaluated by 93 meat consumers. Respondents were asked to evaluate the same samples of Italian Simmental meat provided with the two different labels. Liking scores were obtained using a 9-point scale and the emotions from the EsSense25 list were scored on 5-point scale (1="not at all", 5="extremely")...
January 5, 2017: Meat Science
https://www.readbyqxmd.com/read/28078501/the-tissue-culture-laboratory-of-dr-george-otto-gey-60%C3%A2-yrs-ago-as-recalled-by-a-former-student
#3
Charles T Ambrose
George Otto Gey was a pioneer in tissue culture, having introduced the roller drum, the HeLa cell line, and the use of human fetal cord serum and beef embryo extract. During his career (1920s-1960s), the field of tissue culture was in its infancy and not yet dependent upon commercial biological supply houses. While the early techniques of cell culture have been greatly improved upon, of historical interest may be personal observations of the Gey Tissue Culture Laboratory, Johns Hopkins Medical School, as recalled by a medical student working there in the 1950s...
January 11, 2017: In Vitro Cellular & Developmental Biology. Animal
https://www.readbyqxmd.com/read/28074119/complete-genome-sequence-of-the-salmonella-enterica-serovar-enteritidis-bacteriophages-fse1c-and-fse4c-isolated-from-food-matrices
#4
Javier Santander, Jose I Vasquez, Cristopher Segovia, Leonardo Santos, Gabriel Turra, Karen Huber, James Robeson
Salmonella enterica serovar Enteritidis is one of the most common causes of Salmonellosis worldwide. Utilization of bacteriophages as prophylactic agents is a practical solution to prevent Salmonellosis in ready-to-eat products. Shelf stability is one of the desirable properties for prophylactic bacteriophages. Here, we describe the phenotype, genome, and phylogeny of fSE1C and fSE4S Salmonella bacteriophages. fSE1C and fSE4S were previously isolated from pickle sauce and ground beef respectively and selected for their significant shelf stability...
2017: Standards in Genomic Sciences
https://www.readbyqxmd.com/read/28071797/classification-and-characterization-of-japanese-consumers-beef-preferences-by-external-preference-mapping
#5
Keisuke Sasaki, Motoki Ooi, Naoto Nagura, Michiyo Motoyama, Takumi Narita, Mika Oe, Ikuyo Nakajima, Tatsuro Hagi, Koichi Ojima, Miho Kobayashi, Masaru Nomura, Susumu Muroya, Takeshi Hayashi, Kyoko Akama, Akira Fujikawa, Hironao Hokiyama, Kuniyuki Kobayashi, Takanori Nishimura
BACKGROUND: Over the past few decades, beef producers in Japan have improved marbling in their beef products. It was recently reported that marbling is not well correlated with palatability as rated by Japanese consumers. Here we sought to identify the consumer segments in Japanese that prefer sensory characteristics of beef other than high marbling. RESULTS: Three Wagyu beef, one Holstein beef, and two lean imported beef longissimus samples were subjected to a descriptive sensory test, physicochemical analysis, and consumer (n = 307) preference test...
January 10, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28071009/evolution-of-free-amino-acids-biogenic-amines-and-n-nitrosoamines-throughout-ageing-in-organic-fermented-beef
#6
Karolina M Wójciak, Elżbieta Solska
BACKGROUND: In recent years, interest in uncured meat products has grown and studies were carried out on the use of substances which could replace nitrites, such as acid whey. In spite of this problem in fermented meat products, there is no information regarding the effects of prolonged ageing on the formation of chemical (nitrosoamines, biogenic amines, secondary lipid oxidation products) and microbiological (L. monocytogenes, S. aureus, OLD) toxicants in fermented beef marinated with acid whey...
April 2016: Acta Scientiarum Polonorum. Technologia Alimentaria
https://www.readbyqxmd.com/read/28069102/the-effect-of-cp-concentration-in-the-diet-on-urea-kinetics-and-microbial-usage-of-recycled-urea-in-cattle-a-meta-analysis
#7
E D Batista, E Detmann, S C Valadares Filho, E C Titgemeyer, R F D Valadares
In ruminants, urea recycling is considered an evolutionary advantage. The amount of urea recycled mainly depends of the nitrogen (N) intake and the amount of organic matter (OM) digested in the rumen. Because recycled N contributes to meeting microbial N requirements, accurate estimates of urea recycling can improve the understanding of efficiency of N utilization and N losses to the environment. The objective of this study was to evaluate urea kinetics and microbial usage of recycled urea N in ruminants using a meta-analytical approach...
January 10, 2017: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/28068589/impact-of-dry-chilling-on-the-genetic-diversity-of-escherichia-coli-on-beef-carcasses-and-on-the-survival-of-e-coli-and-e-coli-o157
#8
Jeyachchandran Visvalingam, Yang Liu, Xianqin Yang
The objective of this study was to examine the effect of dry chilling on the genetic diversity of naturally occurring Escherichia coli on beef carcasses, and to examine whether two populations of E. coli recovered from carcasses during chilling and E. coli O157 differed in their response to desiccation. Isolates of E. coli were obtained from beef carcasses during a 67h dry chilling process and were genotyped using multiple-locus variable-number tandem-repeat analysis (MLVA). Ten E. coli genotypes found only at 0h (group A) and found more than once (group B), as well as five strains of E...
December 28, 2016: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/28068185/prevalence-of-antibodies-against-coxiella-burnetii-in-korean-native-cattle-dairy-cattle-and-dogs-in-south-korea
#9
Kwang-Soo Lyoo, Doo Kim, Hyung Gwan Jang, Seung-Joon Lee, Mi Yeoun Park, Tae-Wook Hahn
Coxiella burnetii is a zoonotic agent and causes coxiellosis, which is a cause of reproductive failure in a range of animal species, including abortion and stillbirth and Q fever, which is most often characterized by an acute flu-like illness, mild pneumonia, and/or hepatitis in humans. While livestock are well recognized worldwide as a source of infection, the zoonotic risk of C. burnetii infection in companion animals such as dogs may be overlooked. For serological diagnosis, indirect immunofluorescent assay (IFA) and enzyme-linked immunosorbent assay (ELISA) are generally considered good methods for prevalence surveys of coxiellosis...
January 9, 2017: Vector Borne and Zoonotic Diseases
https://www.readbyqxmd.com/read/28063330/endolysin-lyssa97-is-synergistic-with-carvacrol-in-controlling-staphylococcus-aureus-in-foods
#10
Yoonjee Chang, Hyunjin Yoon, Dong-Hyun Kang, Pahn-Shick Chang, Sangryeol Ryu
LysSA97 is an endolysin encoded by the bacteriophage SA97, the genome sequence of which has been recently revealed. LysSA97 has lytic activity against a variety of Staphylococcus strains that cause foodborne illness. In order to improve its potential as a biocontrol agent against Staphylococcus, various types of essential oil-derived active compounds were tested in combination with LysSA97; carvacrol exhibited significant synergistic effects when combined with LysSA97. The synergistic antimicrobial activity between endolysin and carvacrol in food products, including milk and beef, were investigated...
December 27, 2016: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/28061817/the-rumen-microbial-metaproteome-as-revealed-by-sds-page
#11
Timothy J Snelling, R John Wallace
BACKGROUND: Ruminal digestion is carried out by large numbers of bacteria, archaea, protozoa and fungi. Understanding the microbiota is important because ruminal fermentation dictates the efficiency of feed utilisation by the animal and is also responsible for major emissions of the greenhouse gas, methane. Recent metagenomic and metatranscriptomic studies have helped to elucidate many features of the composition and activity of the microbiota. The metaproteome provides complementary information to these other -omics technologies...
January 7, 2017: BMC Microbiology
https://www.readbyqxmd.com/read/28057050/differential-expression-of-genes-related-to-gain-and-intake-in-the-liver-of-beef-cattle
#12
C M Zarek, A K Lindholm-Perry, L A Kuehn, H C Freetly
BACKGROUND: To better understand which genes play a role in cattle feed intake and gain, we evaluated differential expression of genes related to gain and intake in the liver of crossbred beef steers. Based on past transcriptomics studies on cattle liver, we hypothesized that genes related to metabolism regulation and the inflammatory response would be differentially expressed. This study used 16 animals with diverse gain and intake phenotypes to compare transcript abundance after a 78 day ad libitum feed study...
January 3, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28056081/comparative-exposure-assessment-of-esbl-producing-escherichia-coli-through-meat-consumption
#13
Eric G Evers, Annemarie Pielaat, Joost H Smid, Engeline van Duijkeren, Francy B C Vennemann, Lucas M Wijnands, Jurgen E Chardon
The presence of extended-spectrum β-lactamase (ESBL) and plasmidic AmpC (pAmpC) producing Escherichia coli (EEC) in food animals, especially broilers, has become a major public health concern. The aim of the present study was to quantify the EEC exposure of humans in The Netherlands through the consumption of meat from different food animals. Calculations were done with a simplified Quantitative Microbiological Risk Assessment (QMRA) model. The model took the effect of pre-retail processing, storage at the consumers home and preparation in the kitchen (cross-contamination and heating) on EEC numbers on/in the raw meat products into account...
2017: PloS One
https://www.readbyqxmd.com/read/28052933/grilled-barbecued-and-smoked-meat-intake-and-survival-following-breast-cancer
#14
Humberto Parada, Susan E Steck, Patrick T Bradshaw, Lawrence S Engel, Kathleen Conway, Susan L Teitelbaum, Alfred I Neugut, Regina M Santella, Marilie D Gammon
BACKGROUND: Grilled, barbecued, and smoked meat intake, a prevalent dietary source of polycyclic aromatic hydrocarbon (PAH) carcinogens, may increase the risk of incident breast cancer. However, no studies have examined whether intake of this PAH source influences survival after breast cancer. METHODS: We interviewed a population-based cohort of 1508 women diagnosed with first primary invasive or in situ breast cancer in 1996 and 1997 at baseline and again approximately five years later to assess grilled/barbecued and smoked meat intake...
June 2017: Journal of the National Cancer Institute
https://www.readbyqxmd.com/read/28051918/genetic-variation-in-fabp4-and-evaluation-of-its-effects-on-beef-cattle-fat-content
#15
Daniel E Goszczynski, Juliana Papaleo-Mazzucco, María V Ripoli, Edgardo L Villarreal, Andrés Rogberg-Muñoz, Carlos A Mezzadra, Lilia M Melucci, Guillermo Giovambattista
FABP4 is a protein primarily expressed in adipocytes and macrophages that plays a key role in fatty acid trafficking and lipid hydrolysis. FABP4 gene polymorphisms have been associated with meat quality traits in cattle, mostly in Asian breeds under feedlot conditions. The objectives of this work were to characterize FABP4 genetic variation in several worldwide cattle breeds and evaluate possible genotype effects on fat content in a pasture-fed crossbred (Angus-Hereford-Limousin) population. We re-sequenced 43 unrelated animals from nine cattle breeds (Angus, Brahman, Creole, Hereford, Holstein, Limousin, Nelore, Shorthorn, and Wagyu) and obtained 22 single nucleotide polymorphisms (SNPs) over 3,164 bp, including four novel polymorphisms...
January 4, 2017: Animal Biotechnology
https://www.readbyqxmd.com/read/28047518/su-f-j-165-spectral-characterization-of-tissues-in-high-spectral-and-spatial-resolution-mr-images-in-vitro-implications-for-classification-based-synthetic-ct-algorithm
#16
A Diak, S Shea, M Surucu, S Gros, M Medved, G Karczmar, W Small, J Roeske
PURPOSE: To investigate features of spectral parameters of tissue for use in a synthetic CT algorithm. METHODS: A phantom of fresh beef leg embedded in 1% agarose gel was imaged at 1.5T on a Siemens Aero using HiSS MRI with 1.0mm resolution and 11.1Hz spectral resolution. Post-processing was performed off-line and included labeling of fat and water peaks, and fitting the spectra. All spectra were normalized by the noise within each voxel; thus all parameters are reported in units of signal-to-noise (SNR)...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046255/su-f-e-05-determination-of-breakeven-points-of-in-vitro-meats-and-in-vivo-mice-based-on-tissue-temperature-enhancement-pattern
#17
C Austerlitz, A Barros, I Gkigkitzis, I Haranas, D Zhu, D Campos
PURPOSE: To determine the breakeven points in fresh commercial meat and in vivo mice using the tissue temperature enhancement pattern. METHODS: A 1 cm length and 0.1 cm diameter gold rod were implanted in fresh chicken breast, beef, fish, in vivo Mus Musculus white mice (medial dorsal region) and insonated with ultrasound. The temperature enhancement of gold rods was measured with a needle type thermistor over a temperature range from 35-50 oC. From these results the breakeven points were determined by plotting the gold rod temperature versus ultrasound exposure time and determining the interception point of two curves fitted by a linear regression of thermal response above and below 43 °C...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046186/principal-component-analysis-of-breeding-values-for-growth-and-reproductive-traits-and-genetic-association-with-adult-size-in-beef-cattle
#18
A A Boligon, I S Vicente, R Z Vaz, G S Campos, F R P Souza, R Carvalheiro, L G Albuquerque
Principal component analysis was applied to evaluate the variability and relationships among univariate breeding values predicted for 9 weaning and yearling traits, as well as suggest functions of the traits that would promote a particular breeding objective. Phenotypic and pedigree information from 600,132 Nelore animals was used. Genetic parameters and breeding values were obtained from univariate analyses of birth to weaning weight gain; weaning to yearling weight gain; conformation, finishing precocity, and muscling scores at weaning and at yearling; and yearling scrotal circumference...
December 2016: Journal of Animal Science
https://www.readbyqxmd.com/read/28046179/bill-e-kunkle-interdisciplinary-beef-symposium-impact-of-mineral-and-vitamin-status-on-beef-cattle-immune-function-and-health
#19
E B Kegley, J J Ball, P A Beck
The importance of optimal mineral and vitamin nutrition on improving immune function and health has been recognized in the preceding decades. In the southeast, beef cattle are raised predominantly on forages that may be limiting in nutrients for optimal health, especially trace minerals such as Cu, Zn, and Se. Clinical deficiencies of these nutrients produce classic symptoms that are common to several nutrient deficiencies (e.g., slow growth and unthrifty appearance); however, subclinical deficiencies are more widespread and more difficult to detect, yet may result in broader economic losses...
December 2016: Journal of Animal Science
https://www.readbyqxmd.com/read/28046169/effect-of-shade-on-animal-welfare-growth-performance-and-carcass-characteristics-in-large-pens-of-beef-cattle-fed-a-beta-agonist-in-a-commercial-feedlot
#20
J A Hagenmaier, C D Reinhardt, S J Bartle, D U Thomson
Feedlot cattle ( = 1,395; BW = 568 ± 43 kg) were used to evaluate the effects of shade on animal welfare, growth performance, and carcass quality during the summer of 2013 in a Kansas commercial feedlot. Seven lots of predominately black steers and heifers (4 and 3, respectively) visually determined to be approaching the final mo on feed were identified, randomly gate-sorted, and allocated to pens located across the feed alley from each other to receive 1 of 2 treatments: 1) Shade (mean shade area = 1.5 m/ animal) or 2) No shade...
December 2016: Journal of Animal Science
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