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https://www.readbyqxmd.com/read/27920757/advances-and-challenges-in-viability-detection-of-foodborne-pathogens
#1
REVIEW
Dexin Zeng, Zi Chen, Yuan Jiang, Feng Xue, Baoguang Li
Foodborne outbreaks are a serious public health and food safety concern worldwide. There is a great demand for rapid, sensitive, specific, and accurate methods to detect microbial pathogens in foods. Conventional methods based on cultivation of pathogens have been the gold standard protocols; however, they take up to a week to complete. Molecular assays such as polymerase chain reaction (PCR), sequencing, microarray technologies have been widely used in detection of foodborne pathogens. Among molecular assays, PCR technology [conventional and real-time PCR (qPCR)] is most commonly used in the foodborne pathogen detection because of its high sensitivity and specificity...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27916204/corrigendum-to-assessment-of-the-breakdown-products-of-solar-uv-induced-photolytic-degradation-of-food-dye-tartrazine-food-and-chem-toxicol-68-2014-307-315
#2
Tuane Cristina Dos Santos, Guilherme Julião Zocolo, Daniel Alexandre Morales, Gisela de Aragão Umbuzeiro, Maria Valnice Boldrin Zanoni
No abstract text is available yet for this article.
December 1, 2016: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/27909986/toxicity-and-pharmacokinetic-profile-for-single-dose-injection-of-aby-029-a-fluorescent-anti-egfr-synthetic-affibody-molecule-for-human-use
#3
Kimberley S Samkoe, Jason R Gunn, Kayla Marra, Sally M Hull, Karen L Moodie, Joachim Feldwisch, Theresa V Strong, Daniel R Draney, P Jack Hoopes, David W Roberts, Keith Paulsen, Brian W Pogue
PURPOSE: ABY-029, a synthetic Affibody peptide, Z03115-Cys, labeled with a near-infrared fluorophore, IRDye® 800CW, targeting epidermal growth factor receptor (EGFR) has been produced under good manufacturing practices for a US Food and Drug Administration-approved first-in-use human study during surgical resection of glioma, as well as other tumors. Here, the pharmacology, phototoxicity, receptor activity, and biodistribution studies of ABY-029 were completed in rats, prior to the intended human use...
December 1, 2016: Molecular Imaging and Biology: MIB: the Official Publication of the Academy of Molecular Imaging
https://www.readbyqxmd.com/read/27906146/peanut-skin-extract-mediated-synthesis-of-gold-nanoparticles-silver-nanoparticles-and-gold-silver-bionanocomposites-for-electrochemical-sudan-iv-sensing
#4
Alok Pani, Tran Duy Thanh, Nam Hoon Kim, Joong Hee Lee, Soon-Il Yun
Sustainable methods are needed for rapid and efficient detection of environmental and food pollutants. The Sudan group of dyes has been used extensively as adulterants in food and also are found to be polluting the soil and water bodies. There have been several methods for detection of Sudan dyes, but most of them are not practical enough for common use. In this study, the electrochemical detection efficiency and stability of gold nanoparticle (AuNPs), silver NPs and Au-Ag bionanocomposites, synthesised by peanut skin extract, modified glassy carbon electrode has been investigated...
December 2016: IET Nanobiotechnology
https://www.readbyqxmd.com/read/27889152/application-of-flow-cytometry-to-wine-microorganisms
#5
REVIEW
Cédric Longin, Clément Petitgonnet, Michèle Guilloux-Benatier, Sandrine Rousseaux, Hervé Alexandre
Flow cytometry (FCM) is a powerful technique allowing detection and enumeration of microbial populations in food and during food process. Thanks to the fluorescent dyes used and specific probes, FCM provides information about cell physiological state and allows enumeration of a microorganism in a mixed culture. Thus, this technique is increasingly used to quantify pathogen, spoilage microorganisms and microorganisms of interest. Since one decade, FCM applications to the wine field increase greatly to determine population and physiological state of microorganisms performing alcoholic and malolactic fermentations...
April 2017: Food Microbiology
https://www.readbyqxmd.com/read/27879028/the-orange-side-of-disperse-red-1-humidity-driven-color-switching-in-supramolecular-azo-polymer-materials-based-on-reversible-dye-aggregation
#6
Simon Schoelch, Jaana Vapaavuori, Frédéric-Guillaume Rollet, Christopher J Barrett
Humidity detection, and the quest for low-cost facile humidity-sensitive indicator materials is of great interest for many fields, including semi-conductor processing, food transport and storage, and pharmaceuticals. Ideal humidity-detection materials for a these applications might be based on simple clear optical readout with no power supply, i.e.: a clear color change observed by the naked eye of any untrained observer, since it doesn't require any extra instrumentation or interpretation. Here, the introduction of a synthesis-free one-step procedure, based on physical mixing of easily available commercial materials, for producing a humidity memory material which can be easily painted onto a wide variety of surfaces and undergoes a remarkable color change (approximately 100 nm blue-shift of λMAX ) upon exposure to various thresholds of levels of ambient humidity is reported...
November 23, 2016: Macromolecular Rapid Communications
https://www.readbyqxmd.com/read/27872999/laccase-catalysis-for-the-synthesis-of-bioactive-compounds
#7
REVIEW
Tukayi Kudanga, Blessing Nemadziva, Marilize Le Roes-Hill
The demand for compounds of therapeutic value is increasing mainly because of new applications of bioactive compounds in medicine, pharmaceutical, agricultural, and food industries. This has necessitated the search for cost-effective methods for producing bioactive compounds and therefore the intensification of the search for enzymatic approaches in organic synthesis. Laccase is one of the enzymes that have shown encouraging potential as biocatalysts in the synthesis of bioactive compounds. Laccases are multicopper oxidases with a diverse range of catalytic activities revolving around synthesis and degradative reactions...
November 21, 2016: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/27871872/biotechnological-production-of-aromatic-compounds-of-the-extended-shikimate-pathway-from-renewable-biomass
#8
Jin-Ho Lee, Volker F Wendisch
Aromatic chemicals that contain an unsaturated ring with alternating double and single bonds find numerous applications in a wide range of industries, e.g. paper and dye manufacture, as fuel additives, electrical insulation, resins, pharmaceuticals, agrochemicals, in food, feed and cosmetics. Their chemical production is based on petroleum (BTX; benzene, toluene, and xylene), but they can also be obtained from plants by extraction. Due to petroleum depletion, health compliance, or environmental issues such as global warming, the biotechnological production of aromatics from renewable biomass came more and more into focus...
November 18, 2016: Journal of Biotechnology
https://www.readbyqxmd.com/read/27833914/brilliant-blue-dyes-in-daily-food-how-could-purinergic-system-be-affected
#9
REVIEW
Leonardo Gomes Braga Ferreira, Robson Xavier Faria, Natiele Carla da Silva Ferreira, Rômulo José Soares-Bezerra
Dyes were first obtained from the extraction of plant sources in the Neolithic period to produce dyed clothes. At the beginning of the 19th century, synthetic dyes were produced to color clothes on a large scale. Other applications for synthetic dyes include the pharmaceutical and food industries, which are important interference factors in our lives and health. Herein, we analyzed the possible implications of some dyes that are already described as antagonists of purinergic receptors, including special Brilliant Blue G and its derivative FD&C Blue No...
2016: International journal of food science
https://www.readbyqxmd.com/read/27824368/examining-the-inhibitory-potency-of-food-additive-fast-green-fcf-against-amyloid-fibrillogenesis-under-acidic-conditions
#10
Su-Chun How, Szu-Ming Yang, Ai Hsin, Chia-Ping Tseng, Shu-Shun Hsueh, Ming-Shen Lin, Rita P-Y Chen, Wei-Lung Chou, Steven S-S Wang
More than thirty human proteins and/or peptides can fold incorrectly to form amyloid deposits associated with several protein aggregation diseases. No cure is currently available for treating these diseases. This work is aimed at examining the inhibitory potency of fast green FCF, a biocompatible dye, toward the fibrillogenesis/aggregation of lysozyme. As verified by ThT binding assay along with transmission electron microscopy, fast green FCF was observed to suppress the generation of lysozyme fibrils in a concentration-dependent manner...
November 8, 2016: Food & Function
https://www.readbyqxmd.com/read/27818862/kinetic-study-of-a-%C3%AE-mannanase-from-the-bacillus-licheniformis-hdym-04-and-its-decolorization-ability-of-twenty-two-structurally-different-dyes
#11
Jingping Ge, Renpeng Du, Dan Zhao, Gang Song, Man Jin, Wenxiang Ping
BACKGROUND: The microbial β-mannanases have been increasingly exploited for bioconversion of biomass materials and various potential industrial applications, such as bleaching of softwood pulps, scouring and desizing, food and feed additive, and oil and textile industries. In this paper, a β-mannanase was characterization from the bacteria, Bacillus licheniformis HDYM-04, which was a high β-mannanase-producing strain (576.16 ± 2.12 U/mL at 48 h during fermentation). METHODS: The michaelis constant (Km ) and maximum velocity (Vmax ) of β-mannanase were determined...
2016: SpringerPlus
https://www.readbyqxmd.com/read/27809854/10%C3%A2-fluorescein-sodium-vs-1%C3%A2-isosulfan-blue-in-breast-sentinel-lymph-node-biopsy
#12
Lidong Ren, Zhao Liu, Mengdi Liang, Li Wang, Xingli Song, Shui Wang
BACKGROUND: Sentinel lymph node biopsy (SLNB) is well accepted to be a standard procedure in breast cancer surgery with clinically negative lymph nodes. Isosulfan blue is the first dye approved by the USA Food and Drug Administration for the localization of the lymphatic system. Few alternative tracers have been investigated. In this study, we aimed to compare the differences between 10 % fluorescein sodium and 1 % isosulfan blue in breast sentinel lymph node biopsy and to investigate the feasibility of using 10 % fluorescein sodium as a new dye for breast sentinel lymph node biopsy...
November 3, 2016: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/27807502/near-infrared-dye-loaded-magnetic-nanoparticles-as-photoacoustic-contrast-agent-for-enhanced-tumor-imaging
#13
Chuang Gao, Zi-Jian Deng, Dong Peng, Yu-Shen Jin, Yan Ma, Yan-Yan Li, Yu-Kun Zhu, Jian-Zhong Xi, Jie Tian, Zhi-Fei Dai, Chang-Hui Li, Xiao-Long Liang
Objective: Photoacoustic (PA) tomography (PAT) has attracted extensive interest because of its optical absorption contrast and ultrasonic detection. This study aims to develop a biocompatible and biodegradable PA contrast agent particularly promising for clinical applications in human body. Methods: In this study, we presented a PA contrast agent: 1, 2-distearoyl-sn-glycero-3-phosphoethanolamine- N-[methoxy (polyethylene glycol)] (DSPE-PEG)-coated superparamagnetic iron oxide (SPIO) nanoparticles (NPs) loaded with indocyanine green (ICG)...
September 2016: Cancer Biology & Medicine
https://www.readbyqxmd.com/read/27803944/optimization-of-physiochemical-parameters-during-bioremediation-of-synthetic-dye-by-marasmius-cladophyllus-umas-ms8-using-statistical-approach
#14
Fatin Nur Sufinas Shuib, Ahmad Husaini, Azham Zulkharnain, Hairul Azman Roslan, Tay Meng Guan
In many industrial areas such as in food, pharmaceutical, cosmetic, printing, and textile, the use of synthetic dyes has been integral with products such as azo dye, anthrax, and dyestuffs. As such, these industries produce a lot of waste by-products that could contaminate the environment. Bioremediation, therefore, has become an important emerging technology due to its cost-sustainable, effective, natural approach to cleaning up contaminated groundwater and soil via the use of microorganisms. The use of microorganisms in bioremediation requires the optimisation of parameters used in cultivating the organism...
2016: TheScientificWorldJournal
https://www.readbyqxmd.com/read/27784864/hplc-analysis-of-colorants-migrated-from-children-s-modeling-clays
#15
Eri Kishi, Asako Ozaki, Tomoko Ooshima, Tetsuo Yamano
A method using high-performance liquid chromatograph (HPLC) was developed for the identification of colorants migrated from colored modeling clays, which are popular toys for children. Twelve permitted dyes and 25 non-permitted dyes were analyzed in 20 clays (10 wheat clays, 2 rice clays, 2 corn clays, 3 paper clays and 3 resin clays). As a result, 13 products which were labeled for children's use (under 6 years old) met the specifications of the Japanese Food Sanitation Law, while non-permitted colorants were eluted from 2 products...
2016: Shokuhin Eiseigaku Zasshi. Journal of the Food Hygienic Society of Japan
https://www.readbyqxmd.com/read/27784257/effective-role-of-magnetic-core-shell-nanocomposites-in-removing-organic-and-inorganic-wastes-from-water
#16
Mazhar Ul-Islam, Frederick Claessyns, Stephen Rimmer, Muhammad Balal Arain, Aref Wazwaz, Touseef Rehan, Nasrullah Shah, Mohammad Wasi Ahmad
BACKGROUND: Affordable and efficient water treatment process to produce water free from various contaminants is a big challenge. The presence of toxic heavy metals, dyes, hazardous chemicals and other toxins causes contamination of water sources and our food chain and make them hazardous to living organisms. The current water treatment processes are no longer sustainable due to high cost and low efficiency. Due to advantageous properties, nanotechnology based materials can play a great role in increasing the efficiency of water treatment processes...
October 24, 2016: Recent Patents on Nanotechnology
https://www.readbyqxmd.com/read/27774142/icg-conjugated-magnetic-graphene-oxide-for-dual-photothermal-and-photodynamic-therapy
#17
Ismail Ocsoy, Nuran Isiklan, Sena Cansiz, Nalan Özdemir, Weihong Tan
Aptamer-functionalized magnetic graphene oxide conjugates loaded with indocyanine green (ICG) dye, or Apt@ICG@mGO, have been successfully developed for dual-targeted photothermal and photodynamic therapy. In general, a drug or its carrier or their dosage can be imprtant important issues in terms of toxicity. However, in this system, each component used is quite safe, biocompatibe and clean. For instance, ICG, a Food and Drug Administration (FDA) approved near-infrared (NIR) dye, serves as both a photothermal and photodynamic agent...
2016: RSC Advances
https://www.readbyqxmd.com/read/27769385/inkjet-printed-co2-colorimetric-indicators
#18
Yanan Zhang, Loong-Tak Lim
Colorimetric CO2 indicators were prepared by printing pH dyes (M-cresol purple or phenol red, tetrabutylammonium hydroxide, ethylcellulose, 1:2 ethanol:1-butanol solvent), using a commercially available thermal inkjet printer, on either cellulose paper or plastic transparency film. Indicators inks printed on the papers had higher sensitivity to CO2, greater color change, and more producible than those printed on plastic film. Varying the print intensities of the two pH dyes resulted in multiplexed indicators with tunable sensitivity and expanded detection concentration range towards CO2...
December 1, 2016: Talanta
https://www.readbyqxmd.com/read/27765230/fluorescence-imaging-of-spatial-location-of-lipids-and-proteins-during-digestion-of-protein-stabilized-oil-in-water-emulsions-a-simulated-gastrointestinal-tract-study
#19
Saehun Mun, Jisu Kim, David Julian McClements, Yong-Ro Kim, Yongdoo Choi
A whey protein isolate-rhodamine B conjugate (WPI-RB) was synthesized to visualize changes in the location of a protein emulsifier in oil-in-water emulsions during digestion. An oil-soluble dye (Nile Red) was used to visualize changes in the lipid phase during digestion. Protein-labeled and lipid-labeled emulsions were passed through a simulated gastrointestinal tract consisting of mouth, stomach, and intestinal phases, and changes in protein and lipid location and morphology were monitored using confocal laser scanning microscopy...
March 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/27763531/the-determination-of-food-dyes-in-vitamins-by-rp-hplc
#20
Monika Šuleková, Alexander Hudák, Miroslava Smrčová
Reversed-phase high performance liquid chromatography (RP-HPLC) for the determination of five synthetic food dyes (Quinoline Yellow E104, Sunset Yellow E110, Ponceau 4R E124, Tartrazine E102 and Carmine E120) in vitamins was used. The dyes were analyzed within 10 min using a column with stationary phase C 18 (250 mm × 4.6 mm, 5 μm) at 40 °C with isocratic elution, and the mobile phase contained acetonitrile and a mixture of CH₃COONa:CH₃OH (85:15, v/v) in a ratio of 10:90 (v/v) for yellow-colored capsules and 20:80 (v/v) for red-colored capsules, respectively...
October 17, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
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