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food antibiotic residues

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https://www.readbyqxmd.com/read/28406359/enantioselective-analysis-of-chloramphenicol-residues-in-honey-samples-by-chiral-lc-msms-and-results-of-a-honey-survey
#1
Gerhard G Rimkus, Dirk Hoffmann
Chloramphenicol (CAP) is a broad-spectrum antibiotic used widely both in human and in veterinary medication. Since 1994 CAP is not authorised anymore for use in food-producing animals in the EU due to several adverse effects. A minimum required performance level (MRPL) 0.3 µg kg(-1) was established in 2003. CAP molecule contains two asymmetric centres thus in total four para-CAP stereoisomers exist. Only the RR-CAP enantiomer is bioactive having significant antimicrobial activity. For the first time a chiral LC/MSMS method is reported to identify and quantify the four CAP enantiomers at residue levels in honey samples...
April 13, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28402029/magnetic-solid-phase-extraction-based-on-carbon-nanotubes-for-the-determination-of-polyether-antibiotics-and-s-triazine-drug-residues-in-animal-food-with-lc-ms
#2
Xiaoxing Liu, Shuyu Xie, Tengteng Ni, Dongmei Chen, Xu Wang, Yuanhu Pan, Yulian Wang, Lingli Huang, Guyue Cheng, Wei Qu, Zhenli Liu, Yanfei Tao, Zonghui Yuan
Carbon nanotubes-magnetic nanoparticles, comprising ferroferric oxide nanoparticles and carbon nanotubes, were prepared through a simple one-step synthesis method and subsequently applied to magnetic solid-phase extraction for the determination of polyether antibiotic and s-triazine drug residues in animal food coupled with liquid chromatography with tandem mass spectrometry. The nanocomposites were characterized by transmission electron microscopy, X-ray diffraction, and vibrating sample magnetometry. The components within the nanocomposites endowed the material with high extraction performance and manipulative convenience...
April 12, 2017: Journal of Separation Science
https://www.readbyqxmd.com/read/28365994/efficient-reduction-of-antibacterial-activity-and-cytotoxicity-of-fluoroquinolones-by-fungal-mediated-n-oxidation
#3
Marina Rusch, Astrid Spielmeyer, Jessica Meißner, Manfred Kietzmann, Holger Zorn, Gerd Hamscher
Extensive usage of fluoroquinolone antibiotics in livestock results in their occurrence in manure and subsequently in the environment. Fluoroquinolone residues may promote bacterial resistance and are toxic to plants and aquatic organisms. Moreover, fluoroquinolones may enter the food chain through plant uptake, if manure is applied as fertilizer. Thus, the presence of fluoroquinolones in the environment may pose a threat to human and ecological health. In this study, the biotransformation of enrofloxacin, marbofloxacin, and difloxacin by the fungus X...
April 10, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28362299/towards-a-research-agenda-for-water-sanitation-and-antimicrobial-resistance
#4
Susanne Wuijts, Harold H J L van den Berg, Jennifer Miller, Lydia Abebe, Mark Sobsey, Antoine Andremont, Kate O Medlicott, Mark W J van Passel, Ana Maria de Roda Husman
Clinically relevant antimicrobial resistant bacteria, genetic resistance elements, and antibiotic residues (so-called AMR) from human and animal waste are abundantly present in environmental samples. This presence could lead to human exposure to AMR. In 2015, the World Health Organization (WHO) developed a Global Action Plan for Antimicrobial Resistance with one of its strategic objectives being to strengthen knowledge through surveillance and research. With respect to a strategic research agenda on water, sanitation and hygiene and AMR, WHO organized a workshop to solicit input by scientists and other stakeholders...
April 2017: Journal of Water and Health
https://www.readbyqxmd.com/read/28340759/a-label-free-and-universal-platform-for-antibiotics-detection-based-on-microchip-electrophoresis-using-aptamer-probes
#5
Lingying Zhou, Ning Gan, You Zhou, Tianhua Li, Yuting Cao, Yinji Chen
A novel label-free, universal, and high throughput aptasensor was developed based on a microchip electrophoresis (MCE) platform for automatic detection of antibiotic residues in food. Firstly, chloramphenicol (CAP) was employed as a model to be captured by its aptamer probe (Apt). Then, the partial complementary oligonucleotide of CAP's aptamer (C-DNA) was introduced into the reaction system. Because the Apt-CAP complex can't further hybrid with free C-DNA, the amount of hybrid Apt-C-DNA double strand DNA (dsDNA) was less than that without adding the target...
May 15, 2017: Talanta
https://www.readbyqxmd.com/read/28340749/validation-of-a-new-method-based-on-salting-out-assisted-liquid-liquid-extraction-and-uhplc-ms-ms-for-the-determination-of-betalactam-antibiotics-in-infant-dairy-products
#6
David Moreno-González, Raquel Rodríguez-Ramírez, Monsalud Del Olmo-Iruela, Ana M García-Campaña
In this work a new multiresidue method has been developed for the determination of 15 betalactam antibiotics in infant milk and yogurt based on follow-on milk by ultra-high performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS). The separation was achieved in 6min, using a Kinetex Biphenyl Core-Shell column (50mmx2.1mm, 1.7µm), with a mobile phase of water with 0.05% acetic acid and methanol. The analytes were detected in ESI+ with multiple reaction monitoring mode and fragmentation conditions were optimized to obtain the highest sensitivity...
May 15, 2017: Talanta
https://www.readbyqxmd.com/read/28340716/high-sensitive-detection-of-penicillin-g-residues-in-milk-by-surface-enhanced-raman-scattering
#7
Yongliang Chen, Xiuling Li, Ming Yang, Libin Yang, Xiaoxia Han, Xin Jiang, Bing Zhao
The antibiotic residue in animal source foods (milk, meat, etc.) is threatening people's health due to its abusing in livestock breeding more and more seriously. In this study, a simple and sensitive SERS method coupled with a two-step pretreatment process of sample was proposed for the residue detection of penicillin G (PENG) in real milk sample. It can be found that the two-step pretreatment process of sample is an essential procedure for the successful detection of PENG residue in milk, which can effectively avoid interference from other components in the sample and achieve the trace-level detection of PENG residue by SERS...
May 15, 2017: Talanta
https://www.readbyqxmd.com/read/28291385/determination-of-oxytetracycline-and-4-epi-oxytetracycline-residues-in-feathers-and-edible-tissues-of-broiler-chickens-using-liquid-chromatography-coupled-with-tandem-mass-spectrometry
#8
Javiera Cornejo, Ekaterina Pokrant, Magdalena Krogh, Cristóbal Briceño, Héctor Hidalgo, Aldo Maddaleno, Carolina Araya-Jordán, Betty San Martín
Antibiotics have been widely used in poultry production for the treatment of bacterial diseases. However, drug residues can remain in products derived from animals after the cessation of the drug therapies. Feathers, in particular, have shown an affinity for antibiotics such as tetracycline, suggesting the persistence of these drugs in nonedible tissue. After the birds are slaughtered, feathers are ground into feather meals, which are used as organic fertilizer or an ingredient in animal diets, thereby entering into the food chain and becoming a potential risk for public health...
March 14, 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28274457/detection-of-kanamycin-and-gentamicin-residues-in-animal-derived-food-using-igy-antibody-based-ic-elisa-and-fpia
#9
Cui Li, Yaoyao Zhang, Sergei A Eremin, Omar Yakup, Gang Yao, Xiaoying Zhang
Our aim in this study is to show that IgY antibody based immunoassays could be used to detect antibiotic residues in animal-derived food. Briefly, full antigens of gentamicin (Gent) and kanamycin (Kana) were used to immunize the laying chickens to prepare IgY antibodies. Then, these antibodies were evaluated by FPIA and ic-ELISA to detect Gent/Kana in animal-derived samples. The IC50 of FPIA and ic-ELISA based anti-Gent IgY were 7.70±0.6μg/mL and 0.32±0.06μg/mL, respectively. The IC50 of FPIA and ic-ELISA based anti-Kana IgY were 7...
July 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28224246/comparison-of-veterinary-drug-residue-results-in-animal-tissues-by-ultrahigh-performance-liquid-chromatography-coupled-to-triple-quadrupole-or-quadrupole-time-of-flight-tandem-mass-spectrometry-after-different-sample-preparation-methods-including-use-of-a-commercial
#10
Tarun Anumol, Steven J Lehotay, Joan Stevens, Jerry Zweigenbaum
Veterinary drug residues in animal-derived foods must be monitored to ensure food safety, verify proper veterinary practices, enforce legal limits in domestic and imported foods, and for other purposes. A common goal in drug residue analysis in foods is to achieve acceptable monitoring results for as many analytes as possible, with higher priority given to the drugs of most concern, in an efficient and robust manner. The U.S. Department of Agriculture has implemented a multiclass, multi-residue method based on sample preparation using dispersive solid phase extraction (d-SPE) for cleanup and ultrahigh-performance liquid chromatography-tandem quadrupole mass spectrometry (UHPLC-QQQ) for analysis of >120 drugs at regulatory levels of concern in animal tissues...
February 21, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28218830/rapidfire-mass-spectrometry-with-enhanced-throughput-as-an-alternative-to-liquid-liquid-salt-assisted-extraction-and-lc-ms-analysis-for-sulfonamides-in-honey
#11
Brian T Veach, Thilak K Mudalige, Peter Rye
The use of veterinary drugs in honey bees for the prevention of infectious disease is ever increasing due to the spread of colony collapse disorder around the world. The United States Food and Drug Administration is concerned about the presence of these drugs residues in honey as they often lead to health concerns or potential antibiotic resistance. Currently there is a need for a rapid screening method for the detection of veterinary drugs in honey. Herein is a method that utilizes automated solid-phase extraction that is directly coupled to a mass spectrometer for the quantitative screening of 12 different regulated sulfonamides in honey...
March 2, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28213220/receptor-based-screening-assays-for-the-detection-of-antibiotics-residues-a-review
#12
REVIEW
Saeed Ahmed, Jianan Ning, Guyue Cheng, Ijaz Ahmad, Jun Li, Liu Mingyue, Wei Qu, Mujahid Iqbal, M A B Shabbir, Zonghui Yuan
Consumer and regulatory agencies have a high concern to antibiotic residues in food producing animals, so appropriate screening assays of fast, sensitive, low cost, and easy sample preparation for the identification of these residues are essential for the food-safety insurance. Great efforts in the development of a high-throughput antibiotic screening assay have been made in recent years. Concerning the screening of antibiotic residue, this review elaborate an overview on the availability, advancement and applicability of antibiotic receptor based screening assays for the safety assessment of antibiotics usage (i...
May 1, 2017: Talanta
https://www.readbyqxmd.com/read/28208296/ultrasensitive-self-powered-aptasensor-based-on-enzyme-biofuel-cell-and-dna-bioconjugate-a-facile-and-powerful-tool-for-antibiotic-residue-detection
#13
Panpan Gai, Chengcheng Gu, Ting Hou, Feng Li
Herein, we reported a novel ultrasensitive one-compartment enzyme biofuel cells (EBFCs)-based self-powered aptasensing platform for antibiotic residue detection. By taking full advantage of the unique features of both EBFCs-based self-powered sensors and aptamers, the as-proposed aptasensing platform has the merits of simple instrumentation, anti-interference ability, high selectivity, and low cost. In this study, DNA bioconjugate, i.e., SiO2@gold nanoparticles-complementary strand of aptamer (SiO2@AuNPs-csDNA), was elaborately designed and played a key role in blocking the mass transport of glucose to the bioanode...
February 7, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28187378/development-of-an-analytical-method-for-detecting-nitrofurans-in-bee-pollen-by-liquid-chromatography-electrospray-ionization-tandem-mass-spectrometry
#14
Mi Sun Park, Kyung Tae Kim, Jong Seong Kang
Bee pollen collected by honeybees, which is in powdered form, is a good nutritional supplement. Nitrofuran antibiotics are assumed not to be present in bee pollen, which is important as the level of antibiotics in bee pollen is strongly regulated in many countries. A liquid chromatography-tandem mass spectrometry (LC-MS/MS) method to detect nitrofurans in honey has been developed, but this method is not suitable for bee pollen because of it being in powdered form. During preparation of bee pollen samples, the dispersal of powder particles in an aqueous solution often makes them susceptible to forming an emulsion with solvent components such as hexane and ethyl acetate...
January 9, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28177414/fate-and-effect-of-antibiotics-in-beef-and-dairy-manure-during-static-and-turned-composting
#15
Partha Ray, Chaoqi Chen, Katharine F Knowlton, Amy Pruden, Kang Xia
Manure composting has general benefits for production of soil amendment, but the effects of composting on antibiotic persistence and effects of antibiotics on the composting process are not well-characterized, especially for antibiotics commonly used in dairy cattle. This study provides a comprehensive, head-to-head, replicated comparison of the effect of static and turned composting on typical antibiotics used in beef and dairy cattle in their actual excreted form and corresponding influence on composting efficacy...
January 2017: Journal of Environmental Quality
https://www.readbyqxmd.com/read/28168081/tetracyclines-in-food-and-feedingstuffs-from-regulation-to-analytical-methods-bacterial-resistance-and-environmental-and-health-implications
#16
REVIEW
Fabio Granados-Chinchilla, César Rodríguez
Antibiotics are widely used as growth promoters in animal husbandry; among them, the tetracyclines are a chemical group of relevance, due to their wide use in agriculture, surpassing in quantities applied almost every other antibiotic family. Seeing the considerable amounts of tetracyclines used worldwide, monitoring of these antibiotics is paramount. Advances must be made in the analysis of antibiotics to assess correct usage and dosage of tetracyclines in food and feedstuffs and possible residues in pertinent environmental samples...
2017: Journal of Analytical Methods in Chemistry
https://www.readbyqxmd.com/read/28120013/secretory-expression-and-surface-display-of-a-new-and-biologically-active-single-chain-insulin-sci-59-analog-by-lactic-acid-bacteria
#17
Ruifeng Mao, Dongli Wu, Shimeng Hu, Kangping Zhou, Man Wang, Yefu Wang
Insulin plays an important role in drug therapies for diabetes mellitus and as the main route of insulin delivery, subcutaneous injection may cause local discomfort, hypoglycemia, hyperinsulinemia, and patient non-compliance. Therefore, oral delivery of insulin is more preferred. However, there is a low bioavailability due to insulin degradation by proteolytic enzymes and severe pH conditions along the gastrointestinal tract. In order to use the food-grade bacteria lactic acid bacteria (LAB) as oral delivery vehicles, a new and bioactive single-chain insulin (SCI-59) analog, containing the insulin B- and A-chains connected by an eight-residue linker (RSRGLPFR), was secretory expressed in Lactococcus lactis NZ3900 without using an antibiotic resistance gene and displayed onto the surface of various non-viable bacteria (NVBs) without genetic modification...
January 24, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28054670/ultra-sensitive-detection-of-kanamycin-for-food-safety-using-a-reduced-graphene-oxide-based-fluorescent-aptasensor
#18
Na-Reum Ha, In-Pil Jung, Im-Joung La, Ho-Sup Jung, Moon-Young Yoon
Overuse of antibiotics has caused serious problems, such as appearance of super bacteria, whose accumulation in the human body through the food chain is a concern. Kanamycin is a common antibiotic used to treat diverse infections; however, residual kanamycin can cause many side effects in humans. Thus, development of an ultra-sensitive, precise, and simple detection system for residual kanamycin in food products is urgently needed for food safety. In this study, we identified kanamycin-binding aptamers via a new screening method, and truncated variants were analyzed for optimization of the minimal sequence required for target binding...
January 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28050849/glycin-rich-antimicrobial-peptide-yd1-from-b-amyloliquefaciens-induced-morphological-alteration-in-and-showed-affinity-for-plasmid-dna-of-e-coli
#19
Md Saifur Rahman, Yun Hee Choi, Yoon Seok Choi, Jin Cheol Yoo
Antimicrobial peptides (AMPs), low-molecular-weight proteins with broad-spectrum antimicrobial activity, are the most promising candidates for the development of novel antimicrobials. A powerful cationic glycine-rich AMP YD1 (MW ~ 1.0 kDa) was purified from Bacillus amyloliquefaciens CBSYD1 isolated from traditional Korean fermented food kimchi, for the treatment of multidrug-resistant (MDR) bacteria. Strain CBSYD1 was identified 99.79% similar to Bacillus amyloliquefaciens subsp. plantarum FZB42(T) by 16S rRNA sequence analysis...
December 2017: AMB Express
https://www.readbyqxmd.com/read/28035803/molecularly-imprinted-membrane-electrospray-ionization-for-direct-sample-analyses
#20
Tianyi Li, Liusheng Fan, Yingfeng Wang, Xuebin Huang, Jianguo Xu, Jinxing Lu, Mei Zhang, Wei Xu
Typically dealing with practical samples with very complex matrices, ambient ionization mass spectrometry suffers from low detection sensitivity. In this study, molecular imprinting technology was explored and integrated with the membrane electrospray ionization (MESI) method for direct sample analyses. By enriching targeted analytes on molecularly imprinted membranes (MIMs), improvement (by 10- to 50-fold) in the limit of quantitation could be achieved, compared to conventional nanoelectrospray ionization methods or other ambient ionization methods...
February 7, 2017: Analytical Chemistry
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