scholarly journals Detection of Residues of Antimicrobial Compounds in Eggs by the Rapid Screening Methods

2018 ◽  
Vol 62 (3) ◽  
pp. 48-55
Author(s):  
M. Krišová ◽  
I. Kožárová
Keyword(s):  
Potable Water ◽  
Rapid Screening ◽  
Animal Origin ◽  
Effective Control ◽  
Human Consumption ◽  
Screening Methods ◽  
Antimicrobial Compounds ◽  
Disease Treatment ◽  
The Public ◽  
Antimicrobial Residues

Abstract Eggs belong to the most frequently consumed products of animal origin worldwide, and therefore the safety of eggs is a substantiated issue. Conventional poultry rearing involves the use of antimicrobials added to their feed or potable water particularly for disease treatment, however, in some countries also for the prevention of diseases, promotion of growth and better utilisation of the feed. Thus, effective control of residues of such substances in eggs is very important for the protection of the public health. The aim of this study was to detect the potential presence of antimicrobial residues in fresh hen eggs using commercially available rapid screening methods (Premi®Test and EXP Ampulle test) and compare the results of both of these tests. We examined 22 samples randomly selected from among 66 samples purchased in 11 European countries. We respected the procedures as supplied by the manufacturers of the tests together with their respective test kits. The examination of eggs by the Premi®Test did not detect the presence of antimicrobial residues in the samples, while the EXP Ampulle test provided 8 positive and 6 dubious results. Our results allowed us to conclude that the EXP Ampulle appears to be more sensitive and allows one to carry out more effective control of the presence of antimicrobial residues in hen eggs intended for human consumption.

scholarly journals Contribution of Nanomaterials to the Development of Electrochemical Aptasensors for the Detection of Antimicrobial Residues in Food Products

Chemosensors ◽  
2021 ◽  
Vol 9 (4) ◽  
pp. 69
Author(s):  
Valérie Gaudin
Keyword(s):  
Signal Amplification ◽  
Electrochemical Sensors ◽  
Low Cost ◽  
Food Products ◽  
Animal Origin ◽  
Screening Methods ◽  
Chemical Methods ◽  
Portable Instrumentation ◽  
Physico Chemical ◽  
Antimicrobial Residues

The detection of antimicrobial residues in food products of animal origin is of utmost importance. Indeed antimicrobial residues could be present in animal derived food products because of animal treatments for curative purposes or from illegal use. The usual screening methods to detect antimicrobial residues in food are microbiological, immunological or physico-chemical methods. The development of biosensors to propose sensitive, cheap and quick alternatives to classical methods is constantly increasing. Aptasensors are one of the major trends proposed in the literature, in parallel with the development of immunosensors based on antibodies. The characteristics of electrochemical sensors (i.e., low cost, miniaturization, and portable instrumentation) make them very good candidates to develop screening methods for antimicrobial residues in food products. This review will focus on the recent advances in the development of electrochemical aptasensors for the detection of antimicrobial residues in food products. The contribution of nanomaterials to improve the performance characteristics of electrochemical aptasensors (e.g., Sensitivity, easiness, stability) in the last ten years, as well as signal amplification techniques will be highlighted.

scholarly journals Development and Optimization of an Amperometric Immunosensor for the Detection of Banned Antibiotic Residues in Honey

Proceedings ◽  
2020 ◽  
Vol 60 (1) ◽  
pp. 48
Author(s):  
Valérie Gaudin ◽  
Caroline Bodin ◽  
Céline Hédou ◽  
Christophe Soumet ◽  
Eric Verdon
Keyword(s):  
Electrochemical Method ◽  
Magnetic Beads ◽  
Matrix Effects ◽  
Antioxidant Activities ◽  
Simultaneous Detection ◽  
Animal Origin ◽  
Human Consumption ◽  
Screening Methods ◽  
Antibiotic Residues ◽  
The European Union

Veterinary drugs could contaminate animal-derived food products for human consumption. Some antibiotic residues (e.g., chloramphenicol (CAP), nitrofuran metabolites) are banned in foodstuffs of animal origin (e.g., milk, honey, etc.) in the European Union because of toxicological risks for the consumer. Screening methods applied for food safety monitoring should be sensitive, specific, cheap, quick, and portable for field testing (e.g., self-control). Electrochemical biosensors make it possible to develop a promising and economically interesting approach. An innovative and cheap electrochemical method based on disposable screen-printed carbon electrodes (SPCE), coupled to magnetic beads (MB), that allows the simultaneous detection of three families of antibiotics in milk was published by a Spanish academic team. When the biosensor method was applied to detect CAP residues in honey, two major issues were identified: firstly, the very low levels of residues to reach (i.e., regulatory limits below 1 µg/kg), and secondly, the complexity of the honey matrix; there is not a single honey matrix. Honey composition and color vary considerably depending on the botanical origin. Moreover, some honey ingredients can interfere with the electrochemical detection, especially substances with antioxidant activities (e.g., polyphenols). Therefore, in parallel with the optimization of the electrochemical method, the reduction of matrix effects was a big challenge.

scholarly journals The Growing Interest in Development of Innovative Optical Aptasensors for the Detection of Antimicrobial Residues in Food Products

Biosensors ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 21 ◽  
Author(s):  
Valérie Gaudin
Keyword(s):  
Electrochemical Sensors ◽  
Wide Spectrum ◽  
Food Products ◽  
Animal Origin ◽  
Immunological Methods ◽  
Screening Methods ◽  
Toxicological Effects ◽  
Antimicrobial Residues ◽  
Innovative Solution ◽  
Sensitivity Specificity

The presence of antimicrobial residues in food-producing animals can lead to harmful effects on the consumer (e.g., allergies, antimicrobial resistance, toxicological effects) and cause issues in food transformation (i.e., cheese, yogurts production). Therefore, to control antimicrobial residues in food products of animal origin, screening methods are of utmost importance. Microbiological and immunological methods (e.g., ELISA, dipsticks) are conventional screening methods. Biosensors are an innovative solution for the development of more performant screening methods. Among the different kinds of biosensing elements (e.g., antibodies, aptamers, molecularly imprinted polymers (MIP), enzymes), aptamers for targeting antimicrobial residues are in continuous development since 2000. Therefore, this review has highlighted recent advances in the development of aptasensors, which present multiple advantages over immunosensors. Most of the aptasensors described in the literature for the detection of antimicrobial residues in animal-derived food products are either optical or electrochemical sensors. In this review, I have focused on optical aptasensors and showed how nanotechnologies (nanomaterials, micro/nanofluidics, and signal amplification techniques) largely contribute to the improvement of their performance (sensitivity, specificity, miniaturization, portability). Finally, I have explored different techniques to develop multiplex screening methods. Multiplex screening methods are necessary for the wide spectrum detection of antimicrobials authorized for animal treatment (i.e., having maximum residue limits).

Rapid Screening Methods for Bleeding Disorders. A Three Year Survey

1964 ◽  
Vol 11 (02) ◽  
pp. 506-512 ◽  
Author(s):  
V. A Lovric ◽  
J Margolis
Keyword(s):  
Laboratory Tests ◽  
Capillary Blood ◽  
Screening Tests ◽  
Rapid Screening ◽  
Screening Methods ◽  
Bleeding Disorders ◽  
Routine Laboratory ◽  
Clotting Time ◽  
Kaolin Clotting Time ◽  
In Infants And Children

SummaryAn adaptation of “kaolin clotting time” and prothrombin time for use on haemolysed capillary blood provided simple and sensitive screening tests suitable for use in infants and children. A survey of three year’s experience shows that these are reliable routine laboratory tests for detection of latent coagulation disorders.

Determination of natural radionuclides in waste generated in the potable water treatment plants of the Zona da Mata of the state of Pernambuco- Brazil

2019 ◽  
Vol 7 (2A) ◽  
Author(s):  
Adriana Muniz De Almeida Albuquerque
Keyword(s):  
Water Treatment ◽  
Potable Water ◽  
Natural Radionuclides ◽  
The United States ◽  
Radioactive Material ◽  
Human Consumption ◽  
Radiological Protection ◽  
Natural Occurrence ◽  
Water Treatment Plants ◽  
Potable Water Treatment

The water purification procedure aims to obtain a product appropriate for human consumption, minimizing the presence of contaminants and toxic substances present in the water. Among these contaminants, some radionuclides of natural origin, such as uranium, thorium and their descendants, have been identified. Studies have shown that the stages of purification are quite effective in removing the radionuclides contained in water. The removal is due to co-precipitation of the radionuclides with the suspended materials and the precipitated material is accumulated and characterized as a Technologically Concentrated Natural Occurrence Radioactive Material (TENORM) by the United States Environmental Protection Agency (USEPA). This residue can present significant levels of radioactivity and, when discarded in the environment without any treatment, can generate a problem of environmental impact and a risk to the health of the population. In this way, some gamma emitters of the series of U, Th and the K-40 were determined in the residues generated at the Potable Water Treatment Plants – PWTPs in six municipalities of Pernambuco. The results obtain corroborate the classification of the residues generated in the PWTPs as concentrators of the radioactive components contained in the water supplied to the system and reinforce the need for the release to the environment, which is the usual way of disposal of this waste, to be carried out only after considering the radiological protection standards established.

Correcting Misperceptions About Genetically Modified Food on Social Media: Examining the Impact of Experts, Social Media Heuristics, and the Gateway Belief Model

2020 ◽  
pp. 107554702098137
Author(s):  
Leticia Bode ◽  
Emily K. Vraga ◽  
Melissa Tully
Keyword(s):  
Social Media ◽  
Food Safety ◽  
Genetically Modified ◽  
Human Consumption ◽  
Genetically Modified Food ◽  
The Public ◽  
Scientific Consensus ◽  
Gm Food ◽  
Belief Model ◽  
The Impact

We experimentally test whether expert organizations on social media can correct misperceptions of the scientific consensus on the safety of genetically modified (GM) food for human consumption, as well as what role social media cues, in the form of “likes,” play in that process. We find expert organizations highlighting scientific consensus on GM food safety reduces consensus misperceptions among the public, leading to lower GM misperceptions and boosting related consumption behaviors in line with the gateway belief model. Expert organizations’ credibility may increase as a result of correction, but popularity cues do not seem to affect misperceptions or credibility.

scholarly journals A Review of Alternative Management Tactics Employed for the Control of Various Cockroach Species (Order: Blattodea) in the USA

Insects ◽  
2021 ◽  
Vol 12 (6) ◽  
pp. 550
Author(s):  
Ameya D. Gondhalekar ◽  
Arthur G. Appel ◽  
Gretchen M. Thomas ◽  
Alvaro Romero
Keyword(s):  
Applied Research ◽  
Research Effort ◽  
Effective Control ◽  
Control Methods ◽  
Alternative Tactics ◽  
Alternative Control ◽  
The Public ◽  
Concurrent Use ◽  
The Usa ◽  
Alternative Control Methods

Effective control of domestic and peridomestic cockroaches requires integrated approaches that emphasize concurrent use of chemicals with alternative control tactics. An integrated pest management (IPM) approach is particularly justified in environments where satisfactory cockroach control cannot be achieved due to multiple factors including development of insecticide aversion and resistance in some cockroach species, and poor sanitation or structural issues that foster infestations. While a flurry of research effort has been devoted to study alternative tactics for cockroach control, only a few of them have been evaluated in the context of IPM programs. This review focuses on examining studies on alternative tactics that are proven efficacious, economical, and logistically feasible for their inclusion in IPM programs for important domestic and peridomestic cockroaches in the USA. Management programs that educate the public on cockroach biology, behavior, and the importance of sanitation; use of traps to monitor infestation levels; apply targeted low impact insecticides such as baits, have demonstrated a greater success for effective and sustainable control of cockroaches when compared to an insecticide-only approach. Incorporation of other alternative control methods to IPM programs will require more applied research that validates their use in real-world scenarios and demonstrates their cost-effectiveness.

Ethnic heterogeneity of knowledge on Zonocerus variegatus and reasons for consumption and non-consumption in the southern part of Cameroon

2020 ◽  
Vol 6 (3) ◽  
pp. 273-283
Author(s):  
S. Kekeunou ◽  
P.S. Laïda ◽  
M.B. Achu-Loh ◽  
C.L. Djuideu Tchouamou ◽  
L. Simo-Guiadem ◽  
...  
Keyword(s):  
Ethnic Groups ◽  
Benign Prostatic Hypertrophy ◽  
Forest Products ◽  
Animal Origin ◽  
Human Consumption ◽  
African Countries ◽  
Good Taste ◽  
Stomach Pain ◽  
Non Timber Forest Products ◽  
Variegated Grasshopper

With the growth of the human population, non-timber forest products of animal origin, such as grasshoppers, could be an approach to the solution of food shortage. The variegated grasshopper is an edible insect and an agricultural pest in several African countries. This study aimed to evaluate the knowledge, the level and reasons of consumption and non-consumption of this grasshopper in different ethnic groups in the south part of Cameroon. An individual structured survey, conducted from January to February 2018, among ten ethnic groups revealed that 99% of the participants know the variegated grasshopper. It has 22 local names, with mba’assana as the most common name. This grasshopper is mainly used for consumption (93.7%) and the level of consumption is higher among the Mbamois, Bulu, Ntumu, Pygmies and Maka people. It is used as medicine (3.9%), to treat splenomegaly, umbilical hernia, and to prevent rheumatism and benign prostatic hypertrophy. It is also used in traditional rites (0.6%) (Eton) and as a source of income (0.6%) (Ewondo). People consume the variegated grasshopper mainly because of its good taste and high nutritional value (73.24%). The adult is the stage mostly consumed when fried. The Bassa also consume the larvae (6%). Those who refuse the insect mostly talk of its bad odour and that its consumption can lead to the appearance of various pathologies (3.6%) such as cramps, stomach pain, paralysis, allergy, diarrhoea, nerve pain, abdominal pain, poisoning, vomiting and death. The repellent gland could be involved in the toxicity related to the consumption of this grasshopper. For the Bulu people, poor cooking is a risk factor. Further studies are needed on the potential risks of the variegated grasshopper before it could be recommended for general human consumption.

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