Sensing of perfluorinated compounds using a functionalized tricolor upconversion nanoparticle based fluorescence sensor array

2020 ◽  
Vol 7 (10) ◽  
pp. 3036-3046
Author(s):  
Mingyuan Yin ◽  
Lihua Che ◽  
Shizheng Jiang ◽  
Qiliang Deng ◽  
Shuo Wang
Keyword(s):  
Public Health ◽  
Food Safety ◽  
Environmental Monitoring ◽  
Crucial Role ◽  
Sensor Array ◽  
Perfluorinated Compounds ◽  
Fluorescence Sensor ◽  
Detection And Identification

Detection and identification of perfluorinated compounds (PFCPs) plays a crucial role in environmental monitoring, food safety and public health.

scholarly journals Recent Advances in the Detection of Antibiotic and Multi-Drug Resistant Salmonella: An Update

2021 ◽  
Vol 22 (7) ◽  
pp. 3499
Author(s):  
Siying Wu ◽  
John P. Hulme
Keyword(s):  
Public Health ◽  
Food Safety ◽  
Food Production ◽  
Emerging Technologies ◽  
Production Systems ◽  
Drug Resistant ◽  
Safety Hazards ◽  
Antibiotic Resistant ◽  
Detection And Identification ◽  
Strain Detection

Antibiotic and multi-drug resistant (MDR) Salmonella poses a significant threat to public health due to its ability to colonize animals (cold and warm-blooded) and contaminate freshwater supplies. Monitoring antibiotic resistant Salmonella is traditionally costly, involving the application of phenotypic and genotypic tests over several days. However, with the introduction of cheaper semi-automated devices in the last decade, strain detection and identification times have significantly fallen. This, in turn, has led to efficiently regulated food production systems and further reductions in food safety hazards. This review highlights current and emerging technologies used in the detection of antibiotic resistant and MDR Salmonella.

A pH-based sensor array for the detection and identification of proteins using CdSe/ZnS quantum dots as an indicator

The Analyst ◽  
2019 ◽  
Vol 144 (9) ◽  
pp. 2891-2897 ◽  
Author(s):  
Peng Yan ◽  
Xizhe Li ◽  
Yanhua Dong ◽  
Bingyu Li ◽  
Yayan Wu
Keyword(s):  
Quantum Dots ◽  
Sensor Array ◽  
Fluorescence Sensor ◽  
Buffer Solutions ◽  
Detection And Identification ◽  
Ph Buffer

A novel and simple fluorescence sensor array was developed for the detection and identification of proteins using pH buffer solutions as sensing elements.

Fluorescence sensor arrays for identification of foodborne pathogens

2015 ◽  
Vol 7 (18) ◽  
pp. 7431-7435 ◽  
Author(s):  
Radeemada Mungkarndee ◽  
Gamolwan Tumcharern ◽  
Raweewan Thiramanus ◽  
Ittipon Techakriengkrai ◽  
Mongkol Sukwattanasinitt
Keyword(s):  
Foodborne Pathogens ◽  
Pathogen Detection ◽  
Sensor Array ◽  
Foodborne Pathogen ◽  
Sensor Arrays ◽  
Fluorescence Sensor ◽  
Detection And Identification ◽  
Foodborne Pathogen Detection

A fluorescence sensor array containing polyelectrolyte fluorophores has been developed for foodborne pathogen detection and identification.

On the issue of optimization of atmospheric air quality monitoring for the implementation of the Federal project «Clean Air»

2019 ◽  
pp. 931-936
Author(s):  
I. V. May ◽  
A. A. Kokoulina ◽  
S. Yu. Balashov
Keyword(s):  
Public Health ◽  
Air Quality ◽  
Environmental Monitoring ◽  
Monitoring System ◽  
Protection Measures ◽  
Atmospheric Air ◽  
Monitoring Programs ◽  
Clean Air ◽  
Effectiveness And Efficiency ◽  
The City

Introduction. The city of Chita of Zabaikalsky region is one of the cities of Russia, priority on level of pollution of atmosphere. Of the order of 130 impurities emitted by the sources of the city, 12 are monitored at 5 posts of the Roshydromet network. Maximum monthly average concentrations are formed by benz (a) pyrene (up to 56.8 MPC), hydrogen sulfide (12.3 MPC), suspended particles (up to 4PDC), phenol (up to 3.6 MPC). Significant emissions (59.73 thousand tons in 2018) are aggravated by the use of coal as a fuel by heat and power enterprises and the private sector, climatic and geographical features. Within the framework of the Federal project “Clean Air” of the national project “Ecology”, it is envisaged to reduce the gross emission of pollutants into the atmosphere of Chita by 8.75 thousand tons by 2024, which should lead to a significant improvement in the safety and quality of life of citizens. It is necessary to identify the most “risky “components of pollution for health.It is important to understand: whether the environmental monitoring system reflects the real picture of the dangers posed by pollution of the city’s atmosphere; whether there is a need to optimize the monitoring system for the subsequent assessment of the effectiveness and efficiency of measures; what impurities and at what points should be monitored in the interests of the population, administration and economic entities implementing air protection measures.The aim of the study is to develop recommendations for optimizing the program of environmental monitoring of air quality in the city of Chita, taking into account the criteria of danger to public health for the subsequent evaluation of the effectiveness and effectiveness of the Federal project “Clean Air”.Materials and methods. Justification of optimization of monitoring programs was carried out through the calculation of hazard indices, considering: the mass of emissions and toxicological characteristics of each chemical; the population under the influence. A vector map of the city with a layer “population density” was used as a topographic base. The indices were calculated for regular grid cells covering the residential area. For each cell, the repeatability of winds of 8 points from the priority enterprises and the population within the calculated cell were taken into account. As a result, each calculation cell was characterized by a total coefficient, taking into account the danger of potential impacts of emissions. Based on the results of the assessments, recommendations were formulated to optimize the placement of posts in the city and the formation of monitoring programs.Results. Indices of carcinogenic danger to the health of the population of Chita ranged from 584,805. 96 to 0.03 (priorities: carbon (soot), benzene, benz (a) pyrene); indices of non-carcinogenic danger — from 1,443,558. 24 to 0.00 (priorities: sulfur dioxide, inorganic dust containing 70–20% SiO2, fuel oil ash). The greatest danger to public health stationary sources of emissions form in the North-Western, Western and South-Eastern parts of the city. Roshydromet posts in these zones are absent.Conclusions. As part of the objectives of the project “Clean Air”, it is recommended to Supplement the existing state network of observations of atmospheric air quality in Chita with two posts; to include manganese, xylene, vanadium pentoxide in the monitoring programs, to carry out the determination of Benz(a)pyrene et all posts, which will allow to fully and adequately assess the danger of emissions of economic entities, as well as the effectiveness and efficiency of the provided air protection measures.

scholarly journals Biosensors Based on Isothermal DNA Amplification for Bacterial Detection in Food Safety and Environmental Monitoring

Sensors ◽  
2021 ◽  
Vol 21 (2) ◽  
pp. 602
Author(s):  
Sandra Leonardo ◽  
Anna Toldrà ◽  
Mònica Campàs
Keyword(s):  
Food Safety ◽  
Environmental Monitoring ◽  
Rolling Circle Amplification ◽  
Dna Amplification ◽  
Isothermal Amplification ◽  
In Situ Monitoring ◽  
Strand Displacement ◽  
Strand Displacement Amplification ◽  
Bacterial Detection ◽  
Efficient Detection

The easy and rapid spread of bacterial contamination and the risk it poses to human health makes evident the need for analytical methods alternative to conventional time-consuming laboratory-based techniques for bacterial detection. To tackle this demand, biosensors based on isothermal DNA amplification methods have emerged, which avoid the need for thermal cycling, thus facilitating their integration into small and low-cost devices for in situ monitoring. This review focuses on the breakthroughs made on biosensors based on isothermal amplification methods for the detection of bacteria in the field of food safety and environmental monitoring. Optical and electrochemical biosensors based on loop mediated isothermal amplification (LAMP), rolling circle amplification (RCA), recombinase polymerase amplification (RPA), helicase dependent amplification (HDA), strand displacement amplification (SDA), and isothermal strand displacement polymerisation (ISDPR) are described, and an overview of their current advantages and limitations is provided. Although further efforts are required to harness the potential of these emerging analytical techniques, the coalescence of the different isothermal amplification techniques with the wide variety of biosensing detection strategies provides multiple possibilities for the efficient detection of bacteria far beyond the laboratory bench.

scholarly journals The health implications of distrust in the food system: findings from the dimensions of trust in food systems scale (DOTIFS scale)

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Emma Tonkin ◽  
Trevor Webb ◽  
Julie Henderson ◽  
Paul R. Ward ◽  
John Coveney ◽  
...  
Keyword(s):  
Public Health ◽  
Food Safety ◽  
Content Validity ◽  
Food Systems ◽  
Food System ◽  
Dietary Guidelines ◽  
Consumer Trust ◽  
Safety Practices ◽  
Health Related ◽  
The Impact

Abstract Background Consumer trust in food systems is essential for consumers, food industry, policy makers and regulators. Yet no comprehensive tool for measuring consumer trust in food systems exists. Similarly, the impact that trust in the food system has on health-related food behaviours is yet to be empirically examined. The aim of this research was to develop a comprehensive instrument to measure trust in the food system (the Dimensions of Trust in Food Systems Scale (DOTIFS scale) and use it to explore whether trust in the food system impacts consumers’ health-related behaviours. Methods The DOTIFS scale was developed using sociological theories of trust and pre-existing instruments measuring aspects of trust. It was pilot tested and content validity was assessed with 85 participants. A mixed-methods exploration of the health-related behaviours of 18 conveniently sampled Australian consumers with differing trust scores determined by the DOTIFS scale was then conducted. During March–July 2019 shopping- and home-observations were used to assess participants’ food safety practices and exposure to public health fortification programs, while the CSIRO Healthy Diet Score determined their adherence to national dietary guidelines. Results The DOTIFS scale was found to have high comprehension, ease of use and content validity. Statistical analysis showed scale scores significantly trended as predicted by participants’ stated level of trust. Differences were found in the way individuals with more or less trust in the food system comply with national dietary guidelines, are exposed to public health fortification programs, and adhere to recommended food safety practices. Conclusions The DOTIFS scale is a comprehensive, sociologically- and empirically- informed assessment of consumer trust in food systems that can be self-administered online to large populations and used to measure changes in consumer trust over time. The differences in health-related behaviours between individuals with varying levels of trust warrant further investigation.

Identification of accelerants, fuels and post-combustion residues using a colorimetric sensor array

The Analyst ◽  
2015 ◽  
Vol 140 (17) ◽  
pp. 5929-5935 ◽  
Author(s):  
Zheng Li ◽  
Minseok Jang ◽  
Jon R. Askim ◽  
Kenneth S. Suslick
Keyword(s):  
Sensor Array ◽  
Colorimetric Sensor ◽  
Colorimetric Sensor Array ◽  
Detection And Identification ◽  
Combustion Residues

A linear (1 × 36) colorimetric sensor array has been integrated with a pre-oxidation technique for detection and identification of a variety of fuels and post-combustion residues.

SERS Substrate Fabrication for Biochemical Sensing: towards Point-of-Care Diagnostics

2021 ◽  
Author(s):  
Xiaojia Liu ◽  
Jiuchuan Guo ◽  
Yang Li ◽  
Bo Wang ◽  
Shikun Yang ◽  
...  
Keyword(s):  
Public Health ◽  
Economic Growth ◽  
Food Safety ◽  
Technology Development ◽  
Point Of Care ◽  
Sers Substrate ◽  
Health Issues ◽  
Biochemical Sensing ◽  
Point Of Care Diagnostics ◽  
Increasing Demand

Rapid technology development and economic growth have brought attention to public health issues, such as food safety and environmental pollution, which creates an ever-increasing demand for fast and portable sensing...

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