Abstract
Food and environmental monitoring is one of the most important aspects of dealing with recent threats to human well-being and ecosystems. In this framework, electrochemical aptamer-based sensors are resilient due to their ability to resolve food and environmental contamination. An aptamer-based sensor is a compact analytical device combining an aptamer as the bio-sensing element integrated on the transducer surface. Aptamers display many advantages as biorecognition elements in sensor development when compared to affinity-based (antibodies) sensors. Aptasensors are small, chemically unchanging, and inexpensive. Moreover, they offer extraordinary elasticity and expediency in the design of their assemblies, which has led to innovative sensors that show tremendous sensitivity and selectivity. This review will emphasize recent food and environmental safeguarding using aptasensors; there are good prospects for their performance as a supplement to classical techniques.
Highlights
The ever-increasing occurrence of contaminants in food and the environment is causing severe chronic illness and diseases
An enzyme- and label-free method for lower-level detection of lead ions (Pb2+ ) was developed using an electrochemical aptasensor and a metal–organic framework, which was loaded with Ag–Pt particles that acted as electrocatalytic enhancers and achieved limit of detection (LOD) as low as 0.032 pM with good stability [42]
In a single foodstuff or environmental matrix, numerous co-contaminants may occur, and we anticipate that in the future a multi-analyte system may need to be developed for their simultaneous detection
Summary
The ever-increasing occurrence of contaminants in food and the environment is causing severe chronic illness and diseases. Most of the current analytical tools, which are being used for the analysis of food and environmental samples, still rely on antibody-based bio-molecular recognition events with target analytes. These assays were very well-known and have been established to attain the desired sensitivity and selectivity. The electrochemical aptasensors have emerged as a promising tool among the other reported biosensors, owing to their sensitivity and specificity for the recognition of target analytes These electrochemical aptasensors are further advanced by using labeled redox probes, which involves an aptamer-containing redox molecule coupled with the electrode surface [5]. We will focus on recently reported electrochemical aptasensors applied to assessing various food and environmental contaminants
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
